mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-14 06:56:49 +07:00
c297eb4269
r_safe_completion is currently, and has always been, signaled only if on-disk ack was requested. It's there for fsync and syncfs, which wait for in-flight writes to flush - all data write requests set ONDISK. However, the pool perm check code introduced in 4.2 sends a write request with only ACK set. An unfortunately timed syncfs can then hang forever: r_safe_completion won't be signaled because only an unsafe reply was requested. We could patch ceph_osdc_sync() to skip !ONDISK write requests, but that is somewhat incomplete and yet another special case. Instead, rename this completion to r_done_completion and always signal it when the OSD client is done with the request, whether unsafe, safe, or error. This is a bit cleaner and helps with the cancellation code. Reported-by: Yan, Zheng <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
4525 lines
117 KiB
C
4525 lines
117 KiB
C
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#include <linux/ceph/ceph_debug.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/highmem.h>
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#include <linux/mm.h>
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#include <linux/pagemap.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#ifdef CONFIG_BLOCK
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#include <linux/bio.h>
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#endif
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#include <linux/ceph/libceph.h>
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#include <linux/ceph/osd_client.h>
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#include <linux/ceph/messenger.h>
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#include <linux/ceph/decode.h>
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#include <linux/ceph/auth.h>
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#include <linux/ceph/pagelist.h>
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#define OSD_OPREPLY_FRONT_LEN 512
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static struct kmem_cache *ceph_osd_request_cache;
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static const struct ceph_connection_operations osd_con_ops;
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/*
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* Implement client access to distributed object storage cluster.
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*
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* All data objects are stored within a cluster/cloud of OSDs, or
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* "object storage devices." (Note that Ceph OSDs have _nothing_ to
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* do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply
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* remote daemons serving up and coordinating consistent and safe
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* access to storage.
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*
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* Cluster membership and the mapping of data objects onto storage devices
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* are described by the osd map.
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*
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* We keep track of pending OSD requests (read, write), resubmit
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* requests to different OSDs when the cluster topology/data layout
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* change, or retry the affected requests when the communications
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* channel with an OSD is reset.
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*/
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static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req);
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static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req);
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static void link_linger(struct ceph_osd *osd,
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struct ceph_osd_linger_request *lreq);
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static void unlink_linger(struct ceph_osd *osd,
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struct ceph_osd_linger_request *lreq);
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#if 1
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static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem)
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{
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bool wrlocked = true;
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if (unlikely(down_read_trylock(sem))) {
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wrlocked = false;
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up_read(sem);
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}
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return wrlocked;
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}
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static inline void verify_osdc_locked(struct ceph_osd_client *osdc)
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{
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WARN_ON(!rwsem_is_locked(&osdc->lock));
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}
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static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc)
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{
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WARN_ON(!rwsem_is_wrlocked(&osdc->lock));
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}
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static inline void verify_osd_locked(struct ceph_osd *osd)
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{
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struct ceph_osd_client *osdc = osd->o_osdc;
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WARN_ON(!(mutex_is_locked(&osd->lock) &&
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rwsem_is_locked(&osdc->lock)) &&
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!rwsem_is_wrlocked(&osdc->lock));
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}
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static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq)
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{
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WARN_ON(!mutex_is_locked(&lreq->lock));
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}
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#else
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static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { }
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static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { }
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static inline void verify_osd_locked(struct ceph_osd *osd) { }
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static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { }
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#endif
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/*
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* calculate the mapping of a file extent onto an object, and fill out the
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* request accordingly. shorten extent as necessary if it crosses an
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* object boundary.
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*
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* fill osd op in request message.
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*/
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static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
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u64 *objnum, u64 *objoff, u64 *objlen)
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{
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u64 orig_len = *plen;
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int r;
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/* object extent? */
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r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum,
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objoff, objlen);
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if (r < 0)
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return r;
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if (*objlen < orig_len) {
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*plen = *objlen;
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dout(" skipping last %llu, final file extent %llu~%llu\n",
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orig_len - *plen, off, *plen);
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}
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dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen);
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return 0;
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}
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static void ceph_osd_data_init(struct ceph_osd_data *osd_data)
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{
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memset(osd_data, 0, sizeof (*osd_data));
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osd_data->type = CEPH_OSD_DATA_TYPE_NONE;
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}
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static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
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struct page **pages, u64 length, u32 alignment,
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bool pages_from_pool, bool own_pages)
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{
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osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
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osd_data->pages = pages;
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osd_data->length = length;
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osd_data->alignment = alignment;
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osd_data->pages_from_pool = pages_from_pool;
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osd_data->own_pages = own_pages;
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}
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static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,
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struct ceph_pagelist *pagelist)
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{
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osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST;
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osd_data->pagelist = pagelist;
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}
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#ifdef CONFIG_BLOCK
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static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
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struct bio *bio, size_t bio_length)
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{
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osd_data->type = CEPH_OSD_DATA_TYPE_BIO;
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osd_data->bio = bio;
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osd_data->bio_length = bio_length;
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}
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#endif /* CONFIG_BLOCK */
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#define osd_req_op_data(oreq, whch, typ, fld) \
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({ \
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struct ceph_osd_request *__oreq = (oreq); \
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unsigned int __whch = (whch); \
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BUG_ON(__whch >= __oreq->r_num_ops); \
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&__oreq->r_ops[__whch].typ.fld; \
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})
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static struct ceph_osd_data *
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osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which)
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{
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BUG_ON(which >= osd_req->r_num_ops);
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return &osd_req->r_ops[which].raw_data_in;
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}
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struct ceph_osd_data *
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osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req,
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unsigned int which)
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{
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return osd_req_op_data(osd_req, which, extent, osd_data);
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}
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EXPORT_SYMBOL(osd_req_op_extent_osd_data);
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void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req,
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unsigned int which, struct page **pages,
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u64 length, u32 alignment,
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bool pages_from_pool, bool own_pages)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_raw_data_in(osd_req, which);
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ceph_osd_data_pages_init(osd_data, pages, length, alignment,
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pages_from_pool, own_pages);
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}
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EXPORT_SYMBOL(osd_req_op_raw_data_in_pages);
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void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req,
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unsigned int which, struct page **pages,
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u64 length, u32 alignment,
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bool pages_from_pool, bool own_pages)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, extent, osd_data);
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ceph_osd_data_pages_init(osd_data, pages, length, alignment,
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pages_from_pool, own_pages);
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}
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EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages);
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void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req,
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unsigned int which, struct ceph_pagelist *pagelist)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, extent, osd_data);
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ceph_osd_data_pagelist_init(osd_data, pagelist);
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}
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EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist);
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#ifdef CONFIG_BLOCK
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void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req,
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unsigned int which, struct bio *bio, size_t bio_length)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, extent, osd_data);
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ceph_osd_data_bio_init(osd_data, bio, bio_length);
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}
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EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio);
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#endif /* CONFIG_BLOCK */
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static void osd_req_op_cls_request_info_pagelist(
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struct ceph_osd_request *osd_req,
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unsigned int which, struct ceph_pagelist *pagelist)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, cls, request_info);
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ceph_osd_data_pagelist_init(osd_data, pagelist);
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}
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void osd_req_op_cls_request_data_pagelist(
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struct ceph_osd_request *osd_req,
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unsigned int which, struct ceph_pagelist *pagelist)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, cls, request_data);
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ceph_osd_data_pagelist_init(osd_data, pagelist);
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osd_req->r_ops[which].cls.indata_len += pagelist->length;
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osd_req->r_ops[which].indata_len += pagelist->length;
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}
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EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist);
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void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req,
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unsigned int which, struct page **pages, u64 length,
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u32 alignment, bool pages_from_pool, bool own_pages)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, cls, request_data);
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ceph_osd_data_pages_init(osd_data, pages, length, alignment,
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pages_from_pool, own_pages);
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osd_req->r_ops[which].cls.indata_len += length;
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osd_req->r_ops[which].indata_len += length;
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}
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EXPORT_SYMBOL(osd_req_op_cls_request_data_pages);
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void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req,
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unsigned int which, struct page **pages, u64 length,
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u32 alignment, bool pages_from_pool, bool own_pages)
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{
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struct ceph_osd_data *osd_data;
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osd_data = osd_req_op_data(osd_req, which, cls, response_data);
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ceph_osd_data_pages_init(osd_data, pages, length, alignment,
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pages_from_pool, own_pages);
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}
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EXPORT_SYMBOL(osd_req_op_cls_response_data_pages);
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static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data)
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{
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switch (osd_data->type) {
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case CEPH_OSD_DATA_TYPE_NONE:
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return 0;
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case CEPH_OSD_DATA_TYPE_PAGES:
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return osd_data->length;
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case CEPH_OSD_DATA_TYPE_PAGELIST:
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return (u64)osd_data->pagelist->length;
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#ifdef CONFIG_BLOCK
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case CEPH_OSD_DATA_TYPE_BIO:
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return (u64)osd_data->bio_length;
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#endif /* CONFIG_BLOCK */
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default:
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WARN(true, "unrecognized data type %d\n", (int)osd_data->type);
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return 0;
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}
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}
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static void ceph_osd_data_release(struct ceph_osd_data *osd_data)
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{
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if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) {
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int num_pages;
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num_pages = calc_pages_for((u64)osd_data->alignment,
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(u64)osd_data->length);
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ceph_release_page_vector(osd_data->pages, num_pages);
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}
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ceph_osd_data_init(osd_data);
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}
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static void osd_req_op_data_release(struct ceph_osd_request *osd_req,
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unsigned int which)
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{
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struct ceph_osd_req_op *op;
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BUG_ON(which >= osd_req->r_num_ops);
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op = &osd_req->r_ops[which];
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switch (op->op) {
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case CEPH_OSD_OP_READ:
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case CEPH_OSD_OP_WRITE:
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case CEPH_OSD_OP_WRITEFULL:
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ceph_osd_data_release(&op->extent.osd_data);
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break;
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case CEPH_OSD_OP_CALL:
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ceph_osd_data_release(&op->cls.request_info);
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ceph_osd_data_release(&op->cls.request_data);
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ceph_osd_data_release(&op->cls.response_data);
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break;
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case CEPH_OSD_OP_SETXATTR:
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case CEPH_OSD_OP_CMPXATTR:
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ceph_osd_data_release(&op->xattr.osd_data);
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break;
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case CEPH_OSD_OP_STAT:
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ceph_osd_data_release(&op->raw_data_in);
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break;
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case CEPH_OSD_OP_NOTIFY_ACK:
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ceph_osd_data_release(&op->notify_ack.request_data);
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break;
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case CEPH_OSD_OP_NOTIFY:
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ceph_osd_data_release(&op->notify.request_data);
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ceph_osd_data_release(&op->notify.response_data);
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break;
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case CEPH_OSD_OP_LIST_WATCHERS:
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ceph_osd_data_release(&op->list_watchers.response_data);
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break;
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default:
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break;
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}
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}
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/*
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* Assumes @t is zero-initialized.
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*/
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static void target_init(struct ceph_osd_request_target *t)
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{
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ceph_oid_init(&t->base_oid);
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ceph_oloc_init(&t->base_oloc);
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ceph_oid_init(&t->target_oid);
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ceph_oloc_init(&t->target_oloc);
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ceph_osds_init(&t->acting);
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ceph_osds_init(&t->up);
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t->size = -1;
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t->min_size = -1;
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t->osd = CEPH_HOMELESS_OSD;
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}
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static void target_copy(struct ceph_osd_request_target *dest,
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const struct ceph_osd_request_target *src)
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{
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ceph_oid_copy(&dest->base_oid, &src->base_oid);
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ceph_oloc_copy(&dest->base_oloc, &src->base_oloc);
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ceph_oid_copy(&dest->target_oid, &src->target_oid);
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ceph_oloc_copy(&dest->target_oloc, &src->target_oloc);
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dest->pgid = src->pgid; /* struct */
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dest->pg_num = src->pg_num;
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dest->pg_num_mask = src->pg_num_mask;
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ceph_osds_copy(&dest->acting, &src->acting);
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ceph_osds_copy(&dest->up, &src->up);
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dest->size = src->size;
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dest->min_size = src->min_size;
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dest->sort_bitwise = src->sort_bitwise;
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dest->flags = src->flags;
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dest->paused = src->paused;
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dest->osd = src->osd;
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}
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static void target_destroy(struct ceph_osd_request_target *t)
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{
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ceph_oid_destroy(&t->base_oid);
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ceph_oloc_destroy(&t->base_oloc);
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ceph_oid_destroy(&t->target_oid);
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ceph_oloc_destroy(&t->target_oloc);
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}
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/*
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* requests
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*/
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static void request_release_checks(struct ceph_osd_request *req)
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{
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WARN_ON(!RB_EMPTY_NODE(&req->r_node));
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WARN_ON(!RB_EMPTY_NODE(&req->r_mc_node));
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WARN_ON(!list_empty(&req->r_unsafe_item));
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WARN_ON(req->r_osd);
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}
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static void ceph_osdc_release_request(struct kref *kref)
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{
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struct ceph_osd_request *req = container_of(kref,
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struct ceph_osd_request, r_kref);
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unsigned int which;
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dout("%s %p (r_request %p r_reply %p)\n", __func__, req,
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req->r_request, req->r_reply);
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request_release_checks(req);
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if (req->r_request)
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ceph_msg_put(req->r_request);
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if (req->r_reply)
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ceph_msg_put(req->r_reply);
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for (which = 0; which < req->r_num_ops; which++)
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osd_req_op_data_release(req, which);
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target_destroy(&req->r_t);
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ceph_put_snap_context(req->r_snapc);
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if (req->r_mempool)
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mempool_free(req, req->r_osdc->req_mempool);
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else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS)
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kmem_cache_free(ceph_osd_request_cache, req);
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else
|
|
kfree(req);
|
|
}
|
|
|
|
void ceph_osdc_get_request(struct ceph_osd_request *req)
|
|
{
|
|
dout("%s %p (was %d)\n", __func__, req,
|
|
atomic_read(&req->r_kref.refcount));
|
|
kref_get(&req->r_kref);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_get_request);
|
|
|
|
void ceph_osdc_put_request(struct ceph_osd_request *req)
|
|
{
|
|
if (req) {
|
|
dout("%s %p (was %d)\n", __func__, req,
|
|
atomic_read(&req->r_kref.refcount));
|
|
kref_put(&req->r_kref, ceph_osdc_release_request);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_put_request);
|
|
|
|
static void request_init(struct ceph_osd_request *req)
|
|
{
|
|
/* req only, each op is zeroed in _osd_req_op_init() */
|
|
memset(req, 0, sizeof(*req));
|
|
|
|
kref_init(&req->r_kref);
|
|
init_completion(&req->r_completion);
|
|
init_completion(&req->r_done_completion);
|
|
RB_CLEAR_NODE(&req->r_node);
|
|
RB_CLEAR_NODE(&req->r_mc_node);
|
|
INIT_LIST_HEAD(&req->r_unsafe_item);
|
|
|
|
target_init(&req->r_t);
|
|
}
|
|
|
|
/*
|
|
* This is ugly, but it allows us to reuse linger registration and ping
|
|
* requests, keeping the structure of the code around send_linger{_ping}()
|
|
* reasonable. Setting up a min_nr=2 mempool for each linger request
|
|
* and dealing with copying ops (this blasts req only, watch op remains
|
|
* intact) isn't any better.
|
|
*/
|
|
static void request_reinit(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
bool mempool = req->r_mempool;
|
|
unsigned int num_ops = req->r_num_ops;
|
|
u64 snapid = req->r_snapid;
|
|
struct ceph_snap_context *snapc = req->r_snapc;
|
|
bool linger = req->r_linger;
|
|
struct ceph_msg *request_msg = req->r_request;
|
|
struct ceph_msg *reply_msg = req->r_reply;
|
|
|
|
dout("%s req %p\n", __func__, req);
|
|
WARN_ON(atomic_read(&req->r_kref.refcount) != 1);
|
|
request_release_checks(req);
|
|
|
|
WARN_ON(atomic_read(&request_msg->kref.refcount) != 1);
|
|
WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1);
|
|
target_destroy(&req->r_t);
|
|
|
|
request_init(req);
|
|
req->r_osdc = osdc;
|
|
req->r_mempool = mempool;
|
|
req->r_num_ops = num_ops;
|
|
req->r_snapid = snapid;
|
|
req->r_snapc = snapc;
|
|
req->r_linger = linger;
|
|
req->r_request = request_msg;
|
|
req->r_reply = reply_msg;
|
|
}
|
|
|
|
struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
|
|
struct ceph_snap_context *snapc,
|
|
unsigned int num_ops,
|
|
bool use_mempool,
|
|
gfp_t gfp_flags)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
|
|
if (use_mempool) {
|
|
BUG_ON(num_ops > CEPH_OSD_SLAB_OPS);
|
|
req = mempool_alloc(osdc->req_mempool, gfp_flags);
|
|
} else if (num_ops <= CEPH_OSD_SLAB_OPS) {
|
|
req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags);
|
|
} else {
|
|
BUG_ON(num_ops > CEPH_OSD_MAX_OPS);
|
|
req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]),
|
|
gfp_flags);
|
|
}
|
|
if (unlikely(!req))
|
|
return NULL;
|
|
|
|
request_init(req);
|
|
req->r_osdc = osdc;
|
|
req->r_mempool = use_mempool;
|
|
req->r_num_ops = num_ops;
|
|
req->r_snapid = CEPH_NOSNAP;
|
|
req->r_snapc = ceph_get_snap_context(snapc);
|
|
|
|
dout("%s req %p\n", __func__, req);
|
|
return req;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_alloc_request);
|
|
|
|
static int ceph_oloc_encoding_size(struct ceph_object_locator *oloc)
|
|
{
|
|
return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0);
|
|
}
|
|
|
|
int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
struct ceph_msg *msg;
|
|
int msg_size;
|
|
|
|
WARN_ON(ceph_oid_empty(&req->r_base_oid));
|
|
WARN_ON(ceph_oloc_empty(&req->r_base_oloc));
|
|
|
|
/* create request message */
|
|
msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */
|
|
msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */
|
|
msg_size += CEPH_ENCODING_START_BLK_LEN +
|
|
ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */
|
|
msg_size += 1 + 8 + 4 + 4; /* pgid */
|
|
msg_size += 4 + req->r_base_oid.name_len; /* oid */
|
|
msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op);
|
|
msg_size += 8; /* snapid */
|
|
msg_size += 8; /* snap_seq */
|
|
msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0);
|
|
msg_size += 4; /* retry_attempt */
|
|
|
|
if (req->r_mempool)
|
|
msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
|
|
else
|
|
msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
memset(msg->front.iov_base, 0, msg->front.iov_len);
|
|
req->r_request = msg;
|
|
|
|
/* create reply message */
|
|
msg_size = OSD_OPREPLY_FRONT_LEN;
|
|
msg_size += req->r_base_oid.name_len;
|
|
msg_size += req->r_num_ops * sizeof(struct ceph_osd_op);
|
|
|
|
if (req->r_mempool)
|
|
msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
|
|
else
|
|
msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
req->r_reply = msg;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_alloc_messages);
|
|
|
|
static bool osd_req_opcode_valid(u16 opcode)
|
|
{
|
|
switch (opcode) {
|
|
#define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true;
|
|
__CEPH_FORALL_OSD_OPS(GENERATE_CASE)
|
|
#undef GENERATE_CASE
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This is an osd op init function for opcodes that have no data or
|
|
* other information associated with them. It also serves as a
|
|
* common init routine for all the other init functions, below.
|
|
*/
|
|
static struct ceph_osd_req_op *
|
|
_osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which,
|
|
u16 opcode, u32 flags)
|
|
{
|
|
struct ceph_osd_req_op *op;
|
|
|
|
BUG_ON(which >= osd_req->r_num_ops);
|
|
BUG_ON(!osd_req_opcode_valid(opcode));
|
|
|
|
op = &osd_req->r_ops[which];
|
|
memset(op, 0, sizeof (*op));
|
|
op->op = opcode;
|
|
op->flags = flags;
|
|
|
|
return op;
|
|
}
|
|
|
|
void osd_req_op_init(struct ceph_osd_request *osd_req,
|
|
unsigned int which, u16 opcode, u32 flags)
|
|
{
|
|
(void)_osd_req_op_init(osd_req, which, opcode, flags);
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_init);
|
|
|
|
void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
|
|
unsigned int which, u16 opcode,
|
|
u64 offset, u64 length,
|
|
u64 truncate_size, u32 truncate_seq)
|
|
{
|
|
struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which,
|
|
opcode, 0);
|
|
size_t payload_len = 0;
|
|
|
|
BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE &&
|
|
opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO &&
|
|
opcode != CEPH_OSD_OP_TRUNCATE);
|
|
|
|
op->extent.offset = offset;
|
|
op->extent.length = length;
|
|
op->extent.truncate_size = truncate_size;
|
|
op->extent.truncate_seq = truncate_seq;
|
|
if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL)
|
|
payload_len += length;
|
|
|
|
op->indata_len = payload_len;
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_extent_init);
|
|
|
|
void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
|
|
unsigned int which, u64 length)
|
|
{
|
|
struct ceph_osd_req_op *op;
|
|
u64 previous;
|
|
|
|
BUG_ON(which >= osd_req->r_num_ops);
|
|
op = &osd_req->r_ops[which];
|
|
previous = op->extent.length;
|
|
|
|
if (length == previous)
|
|
return; /* Nothing to do */
|
|
BUG_ON(length > previous);
|
|
|
|
op->extent.length = length;
|
|
op->indata_len -= previous - length;
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_extent_update);
|
|
|
|
void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
|
|
unsigned int which, u64 offset_inc)
|
|
{
|
|
struct ceph_osd_req_op *op, *prev_op;
|
|
|
|
BUG_ON(which + 1 >= osd_req->r_num_ops);
|
|
|
|
prev_op = &osd_req->r_ops[which];
|
|
op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags);
|
|
/* dup previous one */
|
|
op->indata_len = prev_op->indata_len;
|
|
op->outdata_len = prev_op->outdata_len;
|
|
op->extent = prev_op->extent;
|
|
/* adjust offset */
|
|
op->extent.offset += offset_inc;
|
|
op->extent.length -= offset_inc;
|
|
|
|
if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL)
|
|
op->indata_len -= offset_inc;
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_extent_dup_last);
|
|
|
|
void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which,
|
|
u16 opcode, const char *class, const char *method)
|
|
{
|
|
struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which,
|
|
opcode, 0);
|
|
struct ceph_pagelist *pagelist;
|
|
size_t payload_len = 0;
|
|
size_t size;
|
|
|
|
BUG_ON(opcode != CEPH_OSD_OP_CALL);
|
|
|
|
pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS);
|
|
BUG_ON(!pagelist);
|
|
ceph_pagelist_init(pagelist);
|
|
|
|
op->cls.class_name = class;
|
|
size = strlen(class);
|
|
BUG_ON(size > (size_t) U8_MAX);
|
|
op->cls.class_len = size;
|
|
ceph_pagelist_append(pagelist, class, size);
|
|
payload_len += size;
|
|
|
|
op->cls.method_name = method;
|
|
size = strlen(method);
|
|
BUG_ON(size > (size_t) U8_MAX);
|
|
op->cls.method_len = size;
|
|
ceph_pagelist_append(pagelist, method, size);
|
|
payload_len += size;
|
|
|
|
osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist);
|
|
|
|
op->indata_len = payload_len;
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_cls_init);
|
|
|
|
int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
|
|
u16 opcode, const char *name, const void *value,
|
|
size_t size, u8 cmp_op, u8 cmp_mode)
|
|
{
|
|
struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which,
|
|
opcode, 0);
|
|
struct ceph_pagelist *pagelist;
|
|
size_t payload_len;
|
|
|
|
BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR);
|
|
|
|
pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS);
|
|
if (!pagelist)
|
|
return -ENOMEM;
|
|
|
|
ceph_pagelist_init(pagelist);
|
|
|
|
payload_len = strlen(name);
|
|
op->xattr.name_len = payload_len;
|
|
ceph_pagelist_append(pagelist, name, payload_len);
|
|
|
|
op->xattr.value_len = size;
|
|
ceph_pagelist_append(pagelist, value, size);
|
|
payload_len += size;
|
|
|
|
op->xattr.cmp_op = cmp_op;
|
|
op->xattr.cmp_mode = cmp_mode;
|
|
|
|
ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist);
|
|
op->indata_len = payload_len;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_xattr_init);
|
|
|
|
/*
|
|
* @watch_opcode: CEPH_OSD_WATCH_OP_*
|
|
*/
|
|
static void osd_req_op_watch_init(struct ceph_osd_request *req, int which,
|
|
u64 cookie, u8 watch_opcode)
|
|
{
|
|
struct ceph_osd_req_op *op;
|
|
|
|
op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0);
|
|
op->watch.cookie = cookie;
|
|
op->watch.op = watch_opcode;
|
|
op->watch.gen = 0;
|
|
}
|
|
|
|
void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
|
|
unsigned int which,
|
|
u64 expected_object_size,
|
|
u64 expected_write_size)
|
|
{
|
|
struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which,
|
|
CEPH_OSD_OP_SETALLOCHINT,
|
|
0);
|
|
|
|
op->alloc_hint.expected_object_size = expected_object_size;
|
|
op->alloc_hint.expected_write_size = expected_write_size;
|
|
|
|
/*
|
|
* CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
|
|
* not worth a feature bit. Set FAILOK per-op flag to make
|
|
* sure older osds don't trip over an unsupported opcode.
|
|
*/
|
|
op->flags |= CEPH_OSD_OP_FLAG_FAILOK;
|
|
}
|
|
EXPORT_SYMBOL(osd_req_op_alloc_hint_init);
|
|
|
|
static void ceph_osdc_msg_data_add(struct ceph_msg *msg,
|
|
struct ceph_osd_data *osd_data)
|
|
{
|
|
u64 length = ceph_osd_data_length(osd_data);
|
|
|
|
if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
|
|
BUG_ON(length > (u64) SIZE_MAX);
|
|
if (length)
|
|
ceph_msg_data_add_pages(msg, osd_data->pages,
|
|
length, osd_data->alignment);
|
|
} else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) {
|
|
BUG_ON(!length);
|
|
ceph_msg_data_add_pagelist(msg, osd_data->pagelist);
|
|
#ifdef CONFIG_BLOCK
|
|
} else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
|
|
ceph_msg_data_add_bio(msg, osd_data->bio, length);
|
|
#endif
|
|
} else {
|
|
BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE);
|
|
}
|
|
}
|
|
|
|
static u32 osd_req_encode_op(struct ceph_osd_op *dst,
|
|
const struct ceph_osd_req_op *src)
|
|
{
|
|
if (WARN_ON(!osd_req_opcode_valid(src->op))) {
|
|
pr_err("unrecognized osd opcode %d\n", src->op);
|
|
|
|
return 0;
|
|
}
|
|
|
|
switch (src->op) {
|
|
case CEPH_OSD_OP_STAT:
|
|
break;
|
|
case CEPH_OSD_OP_READ:
|
|
case CEPH_OSD_OP_WRITE:
|
|
case CEPH_OSD_OP_WRITEFULL:
|
|
case CEPH_OSD_OP_ZERO:
|
|
case CEPH_OSD_OP_TRUNCATE:
|
|
dst->extent.offset = cpu_to_le64(src->extent.offset);
|
|
dst->extent.length = cpu_to_le64(src->extent.length);
|
|
dst->extent.truncate_size =
|
|
cpu_to_le64(src->extent.truncate_size);
|
|
dst->extent.truncate_seq =
|
|
cpu_to_le32(src->extent.truncate_seq);
|
|
break;
|
|
case CEPH_OSD_OP_CALL:
|
|
dst->cls.class_len = src->cls.class_len;
|
|
dst->cls.method_len = src->cls.method_len;
|
|
dst->cls.indata_len = cpu_to_le32(src->cls.indata_len);
|
|
break;
|
|
case CEPH_OSD_OP_STARTSYNC:
|
|
break;
|
|
case CEPH_OSD_OP_WATCH:
|
|
dst->watch.cookie = cpu_to_le64(src->watch.cookie);
|
|
dst->watch.ver = cpu_to_le64(0);
|
|
dst->watch.op = src->watch.op;
|
|
dst->watch.gen = cpu_to_le32(src->watch.gen);
|
|
break;
|
|
case CEPH_OSD_OP_NOTIFY_ACK:
|
|
break;
|
|
case CEPH_OSD_OP_NOTIFY:
|
|
dst->notify.cookie = cpu_to_le64(src->notify.cookie);
|
|
break;
|
|
case CEPH_OSD_OP_LIST_WATCHERS:
|
|
break;
|
|
case CEPH_OSD_OP_SETALLOCHINT:
|
|
dst->alloc_hint.expected_object_size =
|
|
cpu_to_le64(src->alloc_hint.expected_object_size);
|
|
dst->alloc_hint.expected_write_size =
|
|
cpu_to_le64(src->alloc_hint.expected_write_size);
|
|
break;
|
|
case CEPH_OSD_OP_SETXATTR:
|
|
case CEPH_OSD_OP_CMPXATTR:
|
|
dst->xattr.name_len = cpu_to_le32(src->xattr.name_len);
|
|
dst->xattr.value_len = cpu_to_le32(src->xattr.value_len);
|
|
dst->xattr.cmp_op = src->xattr.cmp_op;
|
|
dst->xattr.cmp_mode = src->xattr.cmp_mode;
|
|
break;
|
|
case CEPH_OSD_OP_CREATE:
|
|
case CEPH_OSD_OP_DELETE:
|
|
break;
|
|
default:
|
|
pr_err("unsupported osd opcode %s\n",
|
|
ceph_osd_op_name(src->op));
|
|
WARN_ON(1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
dst->op = cpu_to_le16(src->op);
|
|
dst->flags = cpu_to_le32(src->flags);
|
|
dst->payload_len = cpu_to_le32(src->indata_len);
|
|
|
|
return src->indata_len;
|
|
}
|
|
|
|
/*
|
|
* build new request AND message, calculate layout, and adjust file
|
|
* extent as needed.
|
|
*
|
|
* if the file was recently truncated, we include information about its
|
|
* old and new size so that the object can be updated appropriately. (we
|
|
* avoid synchronously deleting truncated objects because it's slow.)
|
|
*
|
|
* if @do_sync, include a 'startsync' command so that the osd will flush
|
|
* data quickly.
|
|
*/
|
|
struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
|
|
struct ceph_file_layout *layout,
|
|
struct ceph_vino vino,
|
|
u64 off, u64 *plen,
|
|
unsigned int which, int num_ops,
|
|
int opcode, int flags,
|
|
struct ceph_snap_context *snapc,
|
|
u32 truncate_seq,
|
|
u64 truncate_size,
|
|
bool use_mempool)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
u64 objnum = 0;
|
|
u64 objoff = 0;
|
|
u64 objlen = 0;
|
|
int r;
|
|
|
|
BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE &&
|
|
opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE &&
|
|
opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE);
|
|
|
|
req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool,
|
|
GFP_NOFS);
|
|
if (!req) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/* calculate max write size */
|
|
r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen);
|
|
if (r)
|
|
goto fail;
|
|
|
|
if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) {
|
|
osd_req_op_init(req, which, opcode, 0);
|
|
} else {
|
|
u32 object_size = layout->object_size;
|
|
u32 object_base = off - objoff;
|
|
if (!(truncate_seq == 1 && truncate_size == -1ULL)) {
|
|
if (truncate_size <= object_base) {
|
|
truncate_size = 0;
|
|
} else {
|
|
truncate_size -= object_base;
|
|
if (truncate_size > object_size)
|
|
truncate_size = object_size;
|
|
}
|
|
}
|
|
osd_req_op_extent_init(req, which, opcode, objoff, objlen,
|
|
truncate_size, truncate_seq);
|
|
}
|
|
|
|
req->r_flags = flags;
|
|
req->r_base_oloc.pool = layout->pool_id;
|
|
req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns);
|
|
ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum);
|
|
|
|
req->r_snapid = vino.snap;
|
|
if (flags & CEPH_OSD_FLAG_WRITE)
|
|
req->r_data_offset = off;
|
|
|
|
r = ceph_osdc_alloc_messages(req, GFP_NOFS);
|
|
if (r)
|
|
goto fail;
|
|
|
|
return req;
|
|
|
|
fail:
|
|
ceph_osdc_put_request(req);
|
|
return ERR_PTR(r);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_new_request);
|
|
|
|
/*
|
|
* We keep osd requests in an rbtree, sorted by ->r_tid.
|
|
*/
|
|
DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node)
|
|
DEFINE_RB_FUNCS(request_mc, struct ceph_osd_request, r_tid, r_mc_node)
|
|
|
|
static bool osd_homeless(struct ceph_osd *osd)
|
|
{
|
|
return osd->o_osd == CEPH_HOMELESS_OSD;
|
|
}
|
|
|
|
static bool osd_registered(struct ceph_osd *osd)
|
|
{
|
|
verify_osdc_locked(osd->o_osdc);
|
|
|
|
return !RB_EMPTY_NODE(&osd->o_node);
|
|
}
|
|
|
|
/*
|
|
* Assumes @osd is zero-initialized.
|
|
*/
|
|
static void osd_init(struct ceph_osd *osd)
|
|
{
|
|
atomic_set(&osd->o_ref, 1);
|
|
RB_CLEAR_NODE(&osd->o_node);
|
|
osd->o_requests = RB_ROOT;
|
|
osd->o_linger_requests = RB_ROOT;
|
|
INIT_LIST_HEAD(&osd->o_osd_lru);
|
|
INIT_LIST_HEAD(&osd->o_keepalive_item);
|
|
osd->o_incarnation = 1;
|
|
mutex_init(&osd->lock);
|
|
}
|
|
|
|
static void osd_cleanup(struct ceph_osd *osd)
|
|
{
|
|
WARN_ON(!RB_EMPTY_NODE(&osd->o_node));
|
|
WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests));
|
|
WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests));
|
|
WARN_ON(!list_empty(&osd->o_osd_lru));
|
|
WARN_ON(!list_empty(&osd->o_keepalive_item));
|
|
|
|
if (osd->o_auth.authorizer) {
|
|
WARN_ON(osd_homeless(osd));
|
|
ceph_auth_destroy_authorizer(osd->o_auth.authorizer);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Track open sessions with osds.
|
|
*/
|
|
static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum)
|
|
{
|
|
struct ceph_osd *osd;
|
|
|
|
WARN_ON(onum == CEPH_HOMELESS_OSD);
|
|
|
|
osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL);
|
|
osd_init(osd);
|
|
osd->o_osdc = osdc;
|
|
osd->o_osd = onum;
|
|
|
|
ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr);
|
|
|
|
return osd;
|
|
}
|
|
|
|
static struct ceph_osd *get_osd(struct ceph_osd *osd)
|
|
{
|
|
if (atomic_inc_not_zero(&osd->o_ref)) {
|
|
dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1,
|
|
atomic_read(&osd->o_ref));
|
|
return osd;
|
|
} else {
|
|
dout("get_osd %p FAIL\n", osd);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void put_osd(struct ceph_osd *osd)
|
|
{
|
|
dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref),
|
|
atomic_read(&osd->o_ref) - 1);
|
|
if (atomic_dec_and_test(&osd->o_ref)) {
|
|
osd_cleanup(osd);
|
|
kfree(osd);
|
|
}
|
|
}
|
|
|
|
DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node)
|
|
|
|
static void __move_osd_to_lru(struct ceph_osd *osd)
|
|
{
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
|
|
dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd);
|
|
BUG_ON(!list_empty(&osd->o_osd_lru));
|
|
|
|
spin_lock(&osdc->osd_lru_lock);
|
|
list_add_tail(&osd->o_osd_lru, &osdc->osd_lru);
|
|
spin_unlock(&osdc->osd_lru_lock);
|
|
|
|
osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl;
|
|
}
|
|
|
|
static void maybe_move_osd_to_lru(struct ceph_osd *osd)
|
|
{
|
|
if (RB_EMPTY_ROOT(&osd->o_requests) &&
|
|
RB_EMPTY_ROOT(&osd->o_linger_requests))
|
|
__move_osd_to_lru(osd);
|
|
}
|
|
|
|
static void __remove_osd_from_lru(struct ceph_osd *osd)
|
|
{
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
|
|
dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd);
|
|
|
|
spin_lock(&osdc->osd_lru_lock);
|
|
if (!list_empty(&osd->o_osd_lru))
|
|
list_del_init(&osd->o_osd_lru);
|
|
spin_unlock(&osdc->osd_lru_lock);
|
|
}
|
|
|
|
/*
|
|
* Close the connection and assign any leftover requests to the
|
|
* homeless session.
|
|
*/
|
|
static void close_osd(struct ceph_osd *osd)
|
|
{
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
struct rb_node *n;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd);
|
|
|
|
ceph_con_close(&osd->o_con);
|
|
|
|
for (n = rb_first(&osd->o_requests); n; ) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(n, struct ceph_osd_request, r_node);
|
|
|
|
n = rb_next(n); /* unlink_request() */
|
|
|
|
dout(" reassigning req %p tid %llu\n", req, req->r_tid);
|
|
unlink_request(osd, req);
|
|
link_request(&osdc->homeless_osd, req);
|
|
}
|
|
for (n = rb_first(&osd->o_linger_requests); n; ) {
|
|
struct ceph_osd_linger_request *lreq =
|
|
rb_entry(n, struct ceph_osd_linger_request, node);
|
|
|
|
n = rb_next(n); /* unlink_linger() */
|
|
|
|
dout(" reassigning lreq %p linger_id %llu\n", lreq,
|
|
lreq->linger_id);
|
|
unlink_linger(osd, lreq);
|
|
link_linger(&osdc->homeless_osd, lreq);
|
|
}
|
|
|
|
__remove_osd_from_lru(osd);
|
|
erase_osd(&osdc->osds, osd);
|
|
put_osd(osd);
|
|
}
|
|
|
|
/*
|
|
* reset osd connect
|
|
*/
|
|
static int reopen_osd(struct ceph_osd *osd)
|
|
{
|
|
struct ceph_entity_addr *peer_addr;
|
|
|
|
dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd);
|
|
|
|
if (RB_EMPTY_ROOT(&osd->o_requests) &&
|
|
RB_EMPTY_ROOT(&osd->o_linger_requests)) {
|
|
close_osd(osd);
|
|
return -ENODEV;
|
|
}
|
|
|
|
peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd];
|
|
if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
|
|
!ceph_con_opened(&osd->o_con)) {
|
|
struct rb_node *n;
|
|
|
|
dout("osd addr hasn't changed and connection never opened, "
|
|
"letting msgr retry\n");
|
|
/* touch each r_stamp for handle_timeout()'s benfit */
|
|
for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(n, struct ceph_osd_request, r_node);
|
|
req->r_stamp = jiffies;
|
|
}
|
|
|
|
return -EAGAIN;
|
|
}
|
|
|
|
ceph_con_close(&osd->o_con);
|
|
ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
|
|
osd->o_incarnation++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o,
|
|
bool wrlocked)
|
|
{
|
|
struct ceph_osd *osd;
|
|
|
|
if (wrlocked)
|
|
verify_osdc_wrlocked(osdc);
|
|
else
|
|
verify_osdc_locked(osdc);
|
|
|
|
if (o != CEPH_HOMELESS_OSD)
|
|
osd = lookup_osd(&osdc->osds, o);
|
|
else
|
|
osd = &osdc->homeless_osd;
|
|
if (!osd) {
|
|
if (!wrlocked)
|
|
return ERR_PTR(-EAGAIN);
|
|
|
|
osd = create_osd(osdc, o);
|
|
insert_osd(&osdc->osds, osd);
|
|
ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd,
|
|
&osdc->osdmap->osd_addr[osd->o_osd]);
|
|
}
|
|
|
|
dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd);
|
|
return osd;
|
|
}
|
|
|
|
/*
|
|
* Create request <-> OSD session relation.
|
|
*
|
|
* @req has to be assigned a tid, @osd may be homeless.
|
|
*/
|
|
static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req)
|
|
{
|
|
verify_osd_locked(osd);
|
|
WARN_ON(!req->r_tid || req->r_osd);
|
|
dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd,
|
|
req, req->r_tid);
|
|
|
|
if (!osd_homeless(osd))
|
|
__remove_osd_from_lru(osd);
|
|
else
|
|
atomic_inc(&osd->o_osdc->num_homeless);
|
|
|
|
get_osd(osd);
|
|
insert_request(&osd->o_requests, req);
|
|
req->r_osd = osd;
|
|
}
|
|
|
|
static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req)
|
|
{
|
|
verify_osd_locked(osd);
|
|
WARN_ON(req->r_osd != osd);
|
|
dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd,
|
|
req, req->r_tid);
|
|
|
|
req->r_osd = NULL;
|
|
erase_request(&osd->o_requests, req);
|
|
put_osd(osd);
|
|
|
|
if (!osd_homeless(osd))
|
|
maybe_move_osd_to_lru(osd);
|
|
else
|
|
atomic_dec(&osd->o_osdc->num_homeless);
|
|
}
|
|
|
|
static bool __pool_full(struct ceph_pg_pool_info *pi)
|
|
{
|
|
return pi->flags & CEPH_POOL_FLAG_FULL;
|
|
}
|
|
|
|
static bool have_pool_full(struct ceph_osd_client *osdc)
|
|
{
|
|
struct rb_node *n;
|
|
|
|
for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) {
|
|
struct ceph_pg_pool_info *pi =
|
|
rb_entry(n, struct ceph_pg_pool_info, node);
|
|
|
|
if (__pool_full(pi))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id);
|
|
if (!pi)
|
|
return false;
|
|
|
|
return __pool_full(pi);
|
|
}
|
|
|
|
/*
|
|
* Returns whether a request should be blocked from being sent
|
|
* based on the current osdmap and osd_client settings.
|
|
*/
|
|
static bool target_should_be_paused(struct ceph_osd_client *osdc,
|
|
const struct ceph_osd_request_target *t,
|
|
struct ceph_pg_pool_info *pi)
|
|
{
|
|
bool pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD);
|
|
bool pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) ||
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) ||
|
|
__pool_full(pi);
|
|
|
|
WARN_ON(pi->id != t->base_oloc.pool);
|
|
return (t->flags & CEPH_OSD_FLAG_READ && pauserd) ||
|
|
(t->flags & CEPH_OSD_FLAG_WRITE && pausewr);
|
|
}
|
|
|
|
enum calc_target_result {
|
|
CALC_TARGET_NO_ACTION = 0,
|
|
CALC_TARGET_NEED_RESEND,
|
|
CALC_TARGET_POOL_DNE,
|
|
};
|
|
|
|
static enum calc_target_result calc_target(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_request_target *t,
|
|
u32 *last_force_resend,
|
|
bool any_change)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
struct ceph_pg pgid, last_pgid;
|
|
struct ceph_osds up, acting;
|
|
bool force_resend = false;
|
|
bool need_check_tiering = false;
|
|
bool need_resend = false;
|
|
bool sort_bitwise = ceph_osdmap_flag(osdc, CEPH_OSDMAP_SORTBITWISE);
|
|
enum calc_target_result ct_res;
|
|
int ret;
|
|
|
|
pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool);
|
|
if (!pi) {
|
|
t->osd = CEPH_HOMELESS_OSD;
|
|
ct_res = CALC_TARGET_POOL_DNE;
|
|
goto out;
|
|
}
|
|
|
|
if (osdc->osdmap->epoch == pi->last_force_request_resend) {
|
|
if (last_force_resend &&
|
|
*last_force_resend < pi->last_force_request_resend) {
|
|
*last_force_resend = pi->last_force_request_resend;
|
|
force_resend = true;
|
|
} else if (!last_force_resend) {
|
|
force_resend = true;
|
|
}
|
|
}
|
|
if (ceph_oid_empty(&t->target_oid) || force_resend) {
|
|
ceph_oid_copy(&t->target_oid, &t->base_oid);
|
|
need_check_tiering = true;
|
|
}
|
|
if (ceph_oloc_empty(&t->target_oloc) || force_resend) {
|
|
ceph_oloc_copy(&t->target_oloc, &t->base_oloc);
|
|
need_check_tiering = true;
|
|
}
|
|
|
|
if (need_check_tiering &&
|
|
(t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) {
|
|
if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0)
|
|
t->target_oloc.pool = pi->read_tier;
|
|
if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0)
|
|
t->target_oloc.pool = pi->write_tier;
|
|
}
|
|
|
|
ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid,
|
|
&t->target_oloc, &pgid);
|
|
if (ret) {
|
|
WARN_ON(ret != -ENOENT);
|
|
t->osd = CEPH_HOMELESS_OSD;
|
|
ct_res = CALC_TARGET_POOL_DNE;
|
|
goto out;
|
|
}
|
|
last_pgid.pool = pgid.pool;
|
|
last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask);
|
|
|
|
ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting);
|
|
if (any_change &&
|
|
ceph_is_new_interval(&t->acting,
|
|
&acting,
|
|
&t->up,
|
|
&up,
|
|
t->size,
|
|
pi->size,
|
|
t->min_size,
|
|
pi->min_size,
|
|
t->pg_num,
|
|
pi->pg_num,
|
|
t->sort_bitwise,
|
|
sort_bitwise,
|
|
&last_pgid))
|
|
force_resend = true;
|
|
|
|
if (t->paused && !target_should_be_paused(osdc, t, pi)) {
|
|
t->paused = false;
|
|
need_resend = true;
|
|
}
|
|
|
|
if (ceph_pg_compare(&t->pgid, &pgid) ||
|
|
ceph_osds_changed(&t->acting, &acting, any_change) ||
|
|
force_resend) {
|
|
t->pgid = pgid; /* struct */
|
|
ceph_osds_copy(&t->acting, &acting);
|
|
ceph_osds_copy(&t->up, &up);
|
|
t->size = pi->size;
|
|
t->min_size = pi->min_size;
|
|
t->pg_num = pi->pg_num;
|
|
t->pg_num_mask = pi->pg_num_mask;
|
|
t->sort_bitwise = sort_bitwise;
|
|
|
|
t->osd = acting.primary;
|
|
need_resend = true;
|
|
}
|
|
|
|
ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION;
|
|
out:
|
|
dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd);
|
|
return ct_res;
|
|
}
|
|
|
|
static void setup_request_data(struct ceph_osd_request *req,
|
|
struct ceph_msg *msg)
|
|
{
|
|
u32 data_len = 0;
|
|
int i;
|
|
|
|
if (!list_empty(&msg->data))
|
|
return;
|
|
|
|
WARN_ON(msg->data_length);
|
|
for (i = 0; i < req->r_num_ops; i++) {
|
|
struct ceph_osd_req_op *op = &req->r_ops[i];
|
|
|
|
switch (op->op) {
|
|
/* request */
|
|
case CEPH_OSD_OP_WRITE:
|
|
case CEPH_OSD_OP_WRITEFULL:
|
|
WARN_ON(op->indata_len != op->extent.length);
|
|
ceph_osdc_msg_data_add(msg, &op->extent.osd_data);
|
|
break;
|
|
case CEPH_OSD_OP_SETXATTR:
|
|
case CEPH_OSD_OP_CMPXATTR:
|
|
WARN_ON(op->indata_len != op->xattr.name_len +
|
|
op->xattr.value_len);
|
|
ceph_osdc_msg_data_add(msg, &op->xattr.osd_data);
|
|
break;
|
|
case CEPH_OSD_OP_NOTIFY_ACK:
|
|
ceph_osdc_msg_data_add(msg,
|
|
&op->notify_ack.request_data);
|
|
break;
|
|
|
|
/* reply */
|
|
case CEPH_OSD_OP_STAT:
|
|
ceph_osdc_msg_data_add(req->r_reply,
|
|
&op->raw_data_in);
|
|
break;
|
|
case CEPH_OSD_OP_READ:
|
|
ceph_osdc_msg_data_add(req->r_reply,
|
|
&op->extent.osd_data);
|
|
break;
|
|
case CEPH_OSD_OP_LIST_WATCHERS:
|
|
ceph_osdc_msg_data_add(req->r_reply,
|
|
&op->list_watchers.response_data);
|
|
break;
|
|
|
|
/* both */
|
|
case CEPH_OSD_OP_CALL:
|
|
WARN_ON(op->indata_len != op->cls.class_len +
|
|
op->cls.method_len +
|
|
op->cls.indata_len);
|
|
ceph_osdc_msg_data_add(msg, &op->cls.request_info);
|
|
/* optional, can be NONE */
|
|
ceph_osdc_msg_data_add(msg, &op->cls.request_data);
|
|
/* optional, can be NONE */
|
|
ceph_osdc_msg_data_add(req->r_reply,
|
|
&op->cls.response_data);
|
|
break;
|
|
case CEPH_OSD_OP_NOTIFY:
|
|
ceph_osdc_msg_data_add(msg,
|
|
&op->notify.request_data);
|
|
ceph_osdc_msg_data_add(req->r_reply,
|
|
&op->notify.response_data);
|
|
break;
|
|
}
|
|
|
|
data_len += op->indata_len;
|
|
}
|
|
|
|
WARN_ON(data_len != msg->data_length);
|
|
}
|
|
|
|
static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg)
|
|
{
|
|
void *p = msg->front.iov_base;
|
|
void *const end = p + msg->front_alloc_len;
|
|
u32 data_len = 0;
|
|
int i;
|
|
|
|
if (req->r_flags & CEPH_OSD_FLAG_WRITE) {
|
|
/* snapshots aren't writeable */
|
|
WARN_ON(req->r_snapid != CEPH_NOSNAP);
|
|
} else {
|
|
WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec ||
|
|
req->r_data_offset || req->r_snapc);
|
|
}
|
|
|
|
setup_request_data(req, msg);
|
|
|
|
ceph_encode_32(&p, 1); /* client_inc, always 1 */
|
|
ceph_encode_32(&p, req->r_osdc->osdmap->epoch);
|
|
ceph_encode_32(&p, req->r_flags);
|
|
ceph_encode_timespec(p, &req->r_mtime);
|
|
p += sizeof(struct ceph_timespec);
|
|
/* aka reassert_version */
|
|
memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version));
|
|
p += sizeof(req->r_replay_version);
|
|
|
|
/* oloc */
|
|
ceph_start_encoding(&p, 5, 4,
|
|
ceph_oloc_encoding_size(&req->r_t.target_oloc));
|
|
ceph_encode_64(&p, req->r_t.target_oloc.pool);
|
|
ceph_encode_32(&p, -1); /* preferred */
|
|
ceph_encode_32(&p, 0); /* key len */
|
|
if (req->r_t.target_oloc.pool_ns)
|
|
ceph_encode_string(&p, end, req->r_t.target_oloc.pool_ns->str,
|
|
req->r_t.target_oloc.pool_ns->len);
|
|
else
|
|
ceph_encode_32(&p, 0);
|
|
|
|
/* pgid */
|
|
ceph_encode_8(&p, 1);
|
|
ceph_encode_64(&p, req->r_t.pgid.pool);
|
|
ceph_encode_32(&p, req->r_t.pgid.seed);
|
|
ceph_encode_32(&p, -1); /* preferred */
|
|
|
|
/* oid */
|
|
ceph_encode_32(&p, req->r_t.target_oid.name_len);
|
|
memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len);
|
|
p += req->r_t.target_oid.name_len;
|
|
|
|
/* ops, can imply data */
|
|
ceph_encode_16(&p, req->r_num_ops);
|
|
for (i = 0; i < req->r_num_ops; i++) {
|
|
data_len += osd_req_encode_op(p, &req->r_ops[i]);
|
|
p += sizeof(struct ceph_osd_op);
|
|
}
|
|
|
|
ceph_encode_64(&p, req->r_snapid); /* snapid */
|
|
if (req->r_snapc) {
|
|
ceph_encode_64(&p, req->r_snapc->seq);
|
|
ceph_encode_32(&p, req->r_snapc->num_snaps);
|
|
for (i = 0; i < req->r_snapc->num_snaps; i++)
|
|
ceph_encode_64(&p, req->r_snapc->snaps[i]);
|
|
} else {
|
|
ceph_encode_64(&p, 0); /* snap_seq */
|
|
ceph_encode_32(&p, 0); /* snaps len */
|
|
}
|
|
|
|
ceph_encode_32(&p, req->r_attempts); /* retry_attempt */
|
|
|
|
BUG_ON(p > end);
|
|
msg->front.iov_len = p - msg->front.iov_base;
|
|
msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */
|
|
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
|
|
msg->hdr.data_len = cpu_to_le32(data_len);
|
|
/*
|
|
* The header "data_off" is a hint to the receiver allowing it
|
|
* to align received data into its buffers such that there's no
|
|
* need to re-copy it before writing it to disk (direct I/O).
|
|
*/
|
|
msg->hdr.data_off = cpu_to_le16(req->r_data_offset);
|
|
|
|
dout("%s req %p oid %s oid_len %d front %zu data %u\n", __func__,
|
|
req, req->r_t.target_oid.name, req->r_t.target_oid.name_len,
|
|
msg->front.iov_len, data_len);
|
|
}
|
|
|
|
/*
|
|
* @req has to be assigned a tid and registered.
|
|
*/
|
|
static void send_request(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd *osd = req->r_osd;
|
|
|
|
verify_osd_locked(osd);
|
|
WARN_ON(osd->o_osd != req->r_t.osd);
|
|
|
|
/*
|
|
* We may have a previously queued request message hanging
|
|
* around. Cancel it to avoid corrupting the msgr.
|
|
*/
|
|
if (req->r_sent)
|
|
ceph_msg_revoke(req->r_request);
|
|
|
|
req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR;
|
|
if (req->r_attempts)
|
|
req->r_flags |= CEPH_OSD_FLAG_RETRY;
|
|
else
|
|
WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY);
|
|
|
|
encode_request(req, req->r_request);
|
|
|
|
dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n",
|
|
__func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed,
|
|
req->r_t.osd, req->r_flags, req->r_attempts);
|
|
|
|
req->r_t.paused = false;
|
|
req->r_stamp = jiffies;
|
|
req->r_attempts++;
|
|
|
|
req->r_sent = osd->o_incarnation;
|
|
req->r_request->hdr.tid = cpu_to_le64(req->r_tid);
|
|
ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request));
|
|
}
|
|
|
|
static void maybe_request_map(struct ceph_osd_client *osdc)
|
|
{
|
|
bool continuous = false;
|
|
|
|
verify_osdc_locked(osdc);
|
|
WARN_ON(!osdc->osdmap->epoch);
|
|
|
|
if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) ||
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD) ||
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) {
|
|
dout("%s osdc %p continuous\n", __func__, osdc);
|
|
continuous = true;
|
|
} else {
|
|
dout("%s osdc %p onetime\n", __func__, osdc);
|
|
}
|
|
|
|
if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP,
|
|
osdc->osdmap->epoch + 1, continuous))
|
|
ceph_monc_renew_subs(&osdc->client->monc);
|
|
}
|
|
|
|
static void send_map_check(struct ceph_osd_request *req);
|
|
|
|
static void __submit_request(struct ceph_osd_request *req, bool wrlocked)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
struct ceph_osd *osd;
|
|
enum calc_target_result ct_res;
|
|
bool need_send = false;
|
|
bool promoted = false;
|
|
|
|
WARN_ON(req->r_tid || req->r_got_reply);
|
|
dout("%s req %p wrlocked %d\n", __func__, req, wrlocked);
|
|
|
|
again:
|
|
ct_res = calc_target(osdc, &req->r_t, &req->r_last_force_resend, false);
|
|
if (ct_res == CALC_TARGET_POOL_DNE && !wrlocked)
|
|
goto promote;
|
|
|
|
osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked);
|
|
if (IS_ERR(osd)) {
|
|
WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked);
|
|
goto promote;
|
|
}
|
|
|
|
if ((req->r_flags & CEPH_OSD_FLAG_WRITE) &&
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR)) {
|
|
dout("req %p pausewr\n", req);
|
|
req->r_t.paused = true;
|
|
maybe_request_map(osdc);
|
|
} else if ((req->r_flags & CEPH_OSD_FLAG_READ) &&
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) {
|
|
dout("req %p pauserd\n", req);
|
|
req->r_t.paused = true;
|
|
maybe_request_map(osdc);
|
|
} else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) &&
|
|
!(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY |
|
|
CEPH_OSD_FLAG_FULL_FORCE)) &&
|
|
(ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) ||
|
|
pool_full(osdc, req->r_t.base_oloc.pool))) {
|
|
dout("req %p full/pool_full\n", req);
|
|
pr_warn_ratelimited("FULL or reached pool quota\n");
|
|
req->r_t.paused = true;
|
|
maybe_request_map(osdc);
|
|
} else if (!osd_homeless(osd)) {
|
|
need_send = true;
|
|
} else {
|
|
maybe_request_map(osdc);
|
|
}
|
|
|
|
mutex_lock(&osd->lock);
|
|
/*
|
|
* Assign the tid atomically with send_request() to protect
|
|
* multiple writes to the same object from racing with each
|
|
* other, resulting in out of order ops on the OSDs.
|
|
*/
|
|
req->r_tid = atomic64_inc_return(&osdc->last_tid);
|
|
link_request(osd, req);
|
|
if (need_send)
|
|
send_request(req);
|
|
mutex_unlock(&osd->lock);
|
|
|
|
if (ct_res == CALC_TARGET_POOL_DNE)
|
|
send_map_check(req);
|
|
|
|
if (promoted)
|
|
downgrade_write(&osdc->lock);
|
|
return;
|
|
|
|
promote:
|
|
up_read(&osdc->lock);
|
|
down_write(&osdc->lock);
|
|
wrlocked = true;
|
|
promoted = true;
|
|
goto again;
|
|
}
|
|
|
|
static void account_request(struct ceph_osd_request *req)
|
|
{
|
|
unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK;
|
|
|
|
if (req->r_flags & CEPH_OSD_FLAG_READ) {
|
|
WARN_ON(req->r_flags & mask);
|
|
req->r_flags |= CEPH_OSD_FLAG_ACK;
|
|
} else if (req->r_flags & CEPH_OSD_FLAG_WRITE)
|
|
WARN_ON(!(req->r_flags & mask));
|
|
else
|
|
WARN_ON(1);
|
|
|
|
WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask);
|
|
atomic_inc(&req->r_osdc->num_requests);
|
|
}
|
|
|
|
static void submit_request(struct ceph_osd_request *req, bool wrlocked)
|
|
{
|
|
ceph_osdc_get_request(req);
|
|
account_request(req);
|
|
__submit_request(req, wrlocked);
|
|
}
|
|
|
|
static void __finish_request(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
struct ceph_osd *osd = req->r_osd;
|
|
|
|
verify_osd_locked(osd);
|
|
dout("%s req %p tid %llu\n", __func__, req, req->r_tid);
|
|
|
|
WARN_ON(lookup_request_mc(&osdc->map_checks, req->r_tid));
|
|
unlink_request(osd, req);
|
|
atomic_dec(&osdc->num_requests);
|
|
|
|
/*
|
|
* If an OSD has failed or returned and a request has been sent
|
|
* twice, it's possible to get a reply and end up here while the
|
|
* request message is queued for delivery. We will ignore the
|
|
* reply, so not a big deal, but better to try and catch it.
|
|
*/
|
|
ceph_msg_revoke(req->r_request);
|
|
ceph_msg_revoke_incoming(req->r_reply);
|
|
}
|
|
|
|
static void finish_request(struct ceph_osd_request *req)
|
|
{
|
|
__finish_request(req);
|
|
ceph_osdc_put_request(req);
|
|
}
|
|
|
|
static void __complete_request(struct ceph_osd_request *req)
|
|
{
|
|
if (req->r_callback)
|
|
req->r_callback(req);
|
|
else
|
|
complete_all(&req->r_completion);
|
|
}
|
|
|
|
/*
|
|
* Note that this is open-coded in handle_reply(), which has to deal
|
|
* with ack vs commit, dup acks, etc.
|
|
*/
|
|
static void complete_request(struct ceph_osd_request *req, int err)
|
|
{
|
|
dout("%s req %p tid %llu err %d\n", __func__, req, req->r_tid, err);
|
|
|
|
req->r_result = err;
|
|
__finish_request(req);
|
|
__complete_request(req);
|
|
complete_all(&req->r_done_completion);
|
|
ceph_osdc_put_request(req);
|
|
}
|
|
|
|
static void cancel_map_check(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
struct ceph_osd_request *lookup_req;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
|
|
lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid);
|
|
if (!lookup_req)
|
|
return;
|
|
|
|
WARN_ON(lookup_req != req);
|
|
erase_request_mc(&osdc->map_checks, req);
|
|
ceph_osdc_put_request(req);
|
|
}
|
|
|
|
static void cancel_request(struct ceph_osd_request *req)
|
|
{
|
|
dout("%s req %p tid %llu\n", __func__, req, req->r_tid);
|
|
|
|
cancel_map_check(req);
|
|
__finish_request(req);
|
|
complete_all(&req->r_done_completion);
|
|
ceph_osdc_put_request(req);
|
|
}
|
|
|
|
static void check_pool_dne(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
struct ceph_osdmap *map = osdc->osdmap;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
WARN_ON(!map->epoch);
|
|
|
|
if (req->r_attempts) {
|
|
/*
|
|
* We sent a request earlier, which means that
|
|
* previously the pool existed, and now it does not
|
|
* (i.e., it was deleted).
|
|
*/
|
|
req->r_map_dne_bound = map->epoch;
|
|
dout("%s req %p tid %llu pool disappeared\n", __func__, req,
|
|
req->r_tid);
|
|
} else {
|
|
dout("%s req %p tid %llu map_dne_bound %u have %u\n", __func__,
|
|
req, req->r_tid, req->r_map_dne_bound, map->epoch);
|
|
}
|
|
|
|
if (req->r_map_dne_bound) {
|
|
if (map->epoch >= req->r_map_dne_bound) {
|
|
/* we had a new enough map */
|
|
pr_info_ratelimited("tid %llu pool does not exist\n",
|
|
req->r_tid);
|
|
complete_request(req, -ENOENT);
|
|
}
|
|
} else {
|
|
send_map_check(req);
|
|
}
|
|
}
|
|
|
|
static void map_check_cb(struct ceph_mon_generic_request *greq)
|
|
{
|
|
struct ceph_osd_client *osdc = &greq->monc->client->osdc;
|
|
struct ceph_osd_request *req;
|
|
u64 tid = greq->private_data;
|
|
|
|
WARN_ON(greq->result || !greq->u.newest);
|
|
|
|
down_write(&osdc->lock);
|
|
req = lookup_request_mc(&osdc->map_checks, tid);
|
|
if (!req) {
|
|
dout("%s tid %llu dne\n", __func__, tid);
|
|
goto out_unlock;
|
|
}
|
|
|
|
dout("%s req %p tid %llu map_dne_bound %u newest %llu\n", __func__,
|
|
req, req->r_tid, req->r_map_dne_bound, greq->u.newest);
|
|
if (!req->r_map_dne_bound)
|
|
req->r_map_dne_bound = greq->u.newest;
|
|
erase_request_mc(&osdc->map_checks, req);
|
|
check_pool_dne(req);
|
|
|
|
ceph_osdc_put_request(req);
|
|
out_unlock:
|
|
up_write(&osdc->lock);
|
|
}
|
|
|
|
static void send_map_check(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
struct ceph_osd_request *lookup_req;
|
|
int ret;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
|
|
lookup_req = lookup_request_mc(&osdc->map_checks, req->r_tid);
|
|
if (lookup_req) {
|
|
WARN_ON(lookup_req != req);
|
|
return;
|
|
}
|
|
|
|
ceph_osdc_get_request(req);
|
|
insert_request_mc(&osdc->map_checks, req);
|
|
ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap",
|
|
map_check_cb, req->r_tid);
|
|
WARN_ON(ret);
|
|
}
|
|
|
|
/*
|
|
* lingering requests, watch/notify v2 infrastructure
|
|
*/
|
|
static void linger_release(struct kref *kref)
|
|
{
|
|
struct ceph_osd_linger_request *lreq =
|
|
container_of(kref, struct ceph_osd_linger_request, kref);
|
|
|
|
dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq,
|
|
lreq->reg_req, lreq->ping_req);
|
|
WARN_ON(!RB_EMPTY_NODE(&lreq->node));
|
|
WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node));
|
|
WARN_ON(!RB_EMPTY_NODE(&lreq->mc_node));
|
|
WARN_ON(!list_empty(&lreq->scan_item));
|
|
WARN_ON(!list_empty(&lreq->pending_lworks));
|
|
WARN_ON(lreq->osd);
|
|
|
|
if (lreq->reg_req)
|
|
ceph_osdc_put_request(lreq->reg_req);
|
|
if (lreq->ping_req)
|
|
ceph_osdc_put_request(lreq->ping_req);
|
|
target_destroy(&lreq->t);
|
|
kfree(lreq);
|
|
}
|
|
|
|
static void linger_put(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
if (lreq)
|
|
kref_put(&lreq->kref, linger_release);
|
|
}
|
|
|
|
static struct ceph_osd_linger_request *
|
|
linger_get(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
kref_get(&lreq->kref);
|
|
return lreq;
|
|
}
|
|
|
|
static struct ceph_osd_linger_request *
|
|
linger_alloc(struct ceph_osd_client *osdc)
|
|
{
|
|
struct ceph_osd_linger_request *lreq;
|
|
|
|
lreq = kzalloc(sizeof(*lreq), GFP_NOIO);
|
|
if (!lreq)
|
|
return NULL;
|
|
|
|
kref_init(&lreq->kref);
|
|
mutex_init(&lreq->lock);
|
|
RB_CLEAR_NODE(&lreq->node);
|
|
RB_CLEAR_NODE(&lreq->osdc_node);
|
|
RB_CLEAR_NODE(&lreq->mc_node);
|
|
INIT_LIST_HEAD(&lreq->scan_item);
|
|
INIT_LIST_HEAD(&lreq->pending_lworks);
|
|
init_completion(&lreq->reg_commit_wait);
|
|
init_completion(&lreq->notify_finish_wait);
|
|
|
|
lreq->osdc = osdc;
|
|
target_init(&lreq->t);
|
|
|
|
dout("%s lreq %p\n", __func__, lreq);
|
|
return lreq;
|
|
}
|
|
|
|
DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node)
|
|
DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node)
|
|
DEFINE_RB_FUNCS(linger_mc, struct ceph_osd_linger_request, linger_id, mc_node)
|
|
|
|
/*
|
|
* Create linger request <-> OSD session relation.
|
|
*
|
|
* @lreq has to be registered, @osd may be homeless.
|
|
*/
|
|
static void link_linger(struct ceph_osd *osd,
|
|
struct ceph_osd_linger_request *lreq)
|
|
{
|
|
verify_osd_locked(osd);
|
|
WARN_ON(!lreq->linger_id || lreq->osd);
|
|
dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd,
|
|
osd->o_osd, lreq, lreq->linger_id);
|
|
|
|
if (!osd_homeless(osd))
|
|
__remove_osd_from_lru(osd);
|
|
else
|
|
atomic_inc(&osd->o_osdc->num_homeless);
|
|
|
|
get_osd(osd);
|
|
insert_linger(&osd->o_linger_requests, lreq);
|
|
lreq->osd = osd;
|
|
}
|
|
|
|
static void unlink_linger(struct ceph_osd *osd,
|
|
struct ceph_osd_linger_request *lreq)
|
|
{
|
|
verify_osd_locked(osd);
|
|
WARN_ON(lreq->osd != osd);
|
|
dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd,
|
|
osd->o_osd, lreq, lreq->linger_id);
|
|
|
|
lreq->osd = NULL;
|
|
erase_linger(&osd->o_linger_requests, lreq);
|
|
put_osd(osd);
|
|
|
|
if (!osd_homeless(osd))
|
|
maybe_move_osd_to_lru(osd);
|
|
else
|
|
atomic_dec(&osd->o_osdc->num_homeless);
|
|
}
|
|
|
|
static bool __linger_registered(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
verify_osdc_locked(lreq->osdc);
|
|
|
|
return !RB_EMPTY_NODE(&lreq->osdc_node);
|
|
}
|
|
|
|
static bool linger_registered(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
bool registered;
|
|
|
|
down_read(&osdc->lock);
|
|
registered = __linger_registered(lreq);
|
|
up_read(&osdc->lock);
|
|
|
|
return registered;
|
|
}
|
|
|
|
static void linger_register(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
WARN_ON(lreq->linger_id);
|
|
|
|
linger_get(lreq);
|
|
lreq->linger_id = ++osdc->last_linger_id;
|
|
insert_linger_osdc(&osdc->linger_requests, lreq);
|
|
}
|
|
|
|
static void linger_unregister(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
|
|
erase_linger_osdc(&osdc->linger_requests, lreq);
|
|
linger_put(lreq);
|
|
}
|
|
|
|
static void cancel_linger_request(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_linger_request *lreq = req->r_priv;
|
|
|
|
WARN_ON(!req->r_linger);
|
|
cancel_request(req);
|
|
linger_put(lreq);
|
|
}
|
|
|
|
struct linger_work {
|
|
struct work_struct work;
|
|
struct ceph_osd_linger_request *lreq;
|
|
struct list_head pending_item;
|
|
unsigned long queued_stamp;
|
|
|
|
union {
|
|
struct {
|
|
u64 notify_id;
|
|
u64 notifier_id;
|
|
void *payload; /* points into @msg front */
|
|
size_t payload_len;
|
|
|
|
struct ceph_msg *msg; /* for ceph_msg_put() */
|
|
} notify;
|
|
struct {
|
|
int err;
|
|
} error;
|
|
};
|
|
};
|
|
|
|
static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq,
|
|
work_func_t workfn)
|
|
{
|
|
struct linger_work *lwork;
|
|
|
|
lwork = kzalloc(sizeof(*lwork), GFP_NOIO);
|
|
if (!lwork)
|
|
return NULL;
|
|
|
|
INIT_WORK(&lwork->work, workfn);
|
|
INIT_LIST_HEAD(&lwork->pending_item);
|
|
lwork->lreq = linger_get(lreq);
|
|
|
|
return lwork;
|
|
}
|
|
|
|
static void lwork_free(struct linger_work *lwork)
|
|
{
|
|
struct ceph_osd_linger_request *lreq = lwork->lreq;
|
|
|
|
mutex_lock(&lreq->lock);
|
|
list_del(&lwork->pending_item);
|
|
mutex_unlock(&lreq->lock);
|
|
|
|
linger_put(lreq);
|
|
kfree(lwork);
|
|
}
|
|
|
|
static void lwork_queue(struct linger_work *lwork)
|
|
{
|
|
struct ceph_osd_linger_request *lreq = lwork->lreq;
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
|
|
verify_lreq_locked(lreq);
|
|
WARN_ON(!list_empty(&lwork->pending_item));
|
|
|
|
lwork->queued_stamp = jiffies;
|
|
list_add_tail(&lwork->pending_item, &lreq->pending_lworks);
|
|
queue_work(osdc->notify_wq, &lwork->work);
|
|
}
|
|
|
|
static void do_watch_notify(struct work_struct *w)
|
|
{
|
|
struct linger_work *lwork = container_of(w, struct linger_work, work);
|
|
struct ceph_osd_linger_request *lreq = lwork->lreq;
|
|
|
|
if (!linger_registered(lreq)) {
|
|
dout("%s lreq %p not registered\n", __func__, lreq);
|
|
goto out;
|
|
}
|
|
|
|
WARN_ON(!lreq->is_watch);
|
|
dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n",
|
|
__func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id,
|
|
lwork->notify.payload_len);
|
|
lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id,
|
|
lwork->notify.notifier_id, lwork->notify.payload,
|
|
lwork->notify.payload_len);
|
|
|
|
out:
|
|
ceph_msg_put(lwork->notify.msg);
|
|
lwork_free(lwork);
|
|
}
|
|
|
|
static void do_watch_error(struct work_struct *w)
|
|
{
|
|
struct linger_work *lwork = container_of(w, struct linger_work, work);
|
|
struct ceph_osd_linger_request *lreq = lwork->lreq;
|
|
|
|
if (!linger_registered(lreq)) {
|
|
dout("%s lreq %p not registered\n", __func__, lreq);
|
|
goto out;
|
|
}
|
|
|
|
dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err);
|
|
lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err);
|
|
|
|
out:
|
|
lwork_free(lwork);
|
|
}
|
|
|
|
static void queue_watch_error(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct linger_work *lwork;
|
|
|
|
lwork = lwork_alloc(lreq, do_watch_error);
|
|
if (!lwork) {
|
|
pr_err("failed to allocate error-lwork\n");
|
|
return;
|
|
}
|
|
|
|
lwork->error.err = lreq->last_error;
|
|
lwork_queue(lwork);
|
|
}
|
|
|
|
static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq,
|
|
int result)
|
|
{
|
|
if (!completion_done(&lreq->reg_commit_wait)) {
|
|
lreq->reg_commit_error = (result <= 0 ? result : 0);
|
|
complete_all(&lreq->reg_commit_wait);
|
|
}
|
|
}
|
|
|
|
static void linger_commit_cb(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_linger_request *lreq = req->r_priv;
|
|
|
|
mutex_lock(&lreq->lock);
|
|
dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq,
|
|
lreq->linger_id, req->r_result);
|
|
WARN_ON(!__linger_registered(lreq));
|
|
linger_reg_commit_complete(lreq, req->r_result);
|
|
lreq->committed = true;
|
|
|
|
if (!lreq->is_watch) {
|
|
struct ceph_osd_data *osd_data =
|
|
osd_req_op_data(req, 0, notify, response_data);
|
|
void *p = page_address(osd_data->pages[0]);
|
|
|
|
WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY ||
|
|
osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);
|
|
|
|
/* make note of the notify_id */
|
|
if (req->r_ops[0].outdata_len >= sizeof(u64)) {
|
|
lreq->notify_id = ceph_decode_64(&p);
|
|
dout("lreq %p notify_id %llu\n", lreq,
|
|
lreq->notify_id);
|
|
} else {
|
|
dout("lreq %p no notify_id\n", lreq);
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&lreq->lock);
|
|
linger_put(lreq);
|
|
}
|
|
|
|
static int normalize_watch_error(int err)
|
|
{
|
|
/*
|
|
* Translate ENOENT -> ENOTCONN so that a delete->disconnection
|
|
* notification and a failure to reconnect because we raced with
|
|
* the delete appear the same to the user.
|
|
*/
|
|
if (err == -ENOENT)
|
|
err = -ENOTCONN;
|
|
|
|
return err;
|
|
}
|
|
|
|
static void linger_reconnect_cb(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_linger_request *lreq = req->r_priv;
|
|
|
|
mutex_lock(&lreq->lock);
|
|
dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__,
|
|
lreq, lreq->linger_id, req->r_result, lreq->last_error);
|
|
if (req->r_result < 0) {
|
|
if (!lreq->last_error) {
|
|
lreq->last_error = normalize_watch_error(req->r_result);
|
|
queue_watch_error(lreq);
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&lreq->lock);
|
|
linger_put(lreq);
|
|
}
|
|
|
|
static void send_linger(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_request *req = lreq->reg_req;
|
|
struct ceph_osd_req_op *op = &req->r_ops[0];
|
|
|
|
verify_osdc_wrlocked(req->r_osdc);
|
|
dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id);
|
|
|
|
if (req->r_osd)
|
|
cancel_linger_request(req);
|
|
|
|
request_reinit(req);
|
|
ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid);
|
|
ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc);
|
|
req->r_flags = lreq->t.flags;
|
|
req->r_mtime = lreq->mtime;
|
|
|
|
mutex_lock(&lreq->lock);
|
|
if (lreq->is_watch && lreq->committed) {
|
|
WARN_ON(op->op != CEPH_OSD_OP_WATCH ||
|
|
op->watch.cookie != lreq->linger_id);
|
|
op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT;
|
|
op->watch.gen = ++lreq->register_gen;
|
|
dout("lreq %p reconnect register_gen %u\n", lreq,
|
|
op->watch.gen);
|
|
req->r_callback = linger_reconnect_cb;
|
|
} else {
|
|
if (!lreq->is_watch)
|
|
lreq->notify_id = 0;
|
|
else
|
|
WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH);
|
|
dout("lreq %p register\n", lreq);
|
|
req->r_callback = linger_commit_cb;
|
|
}
|
|
mutex_unlock(&lreq->lock);
|
|
|
|
req->r_priv = linger_get(lreq);
|
|
req->r_linger = true;
|
|
|
|
submit_request(req, true);
|
|
}
|
|
|
|
static void linger_ping_cb(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_linger_request *lreq = req->r_priv;
|
|
|
|
mutex_lock(&lreq->lock);
|
|
dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n",
|
|
__func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent,
|
|
lreq->last_error);
|
|
if (lreq->register_gen == req->r_ops[0].watch.gen) {
|
|
if (!req->r_result) {
|
|
lreq->watch_valid_thru = lreq->ping_sent;
|
|
} else if (!lreq->last_error) {
|
|
lreq->last_error = normalize_watch_error(req->r_result);
|
|
queue_watch_error(lreq);
|
|
}
|
|
} else {
|
|
dout("lreq %p register_gen %u ignoring old pong %u\n", lreq,
|
|
lreq->register_gen, req->r_ops[0].watch.gen);
|
|
}
|
|
|
|
mutex_unlock(&lreq->lock);
|
|
linger_put(lreq);
|
|
}
|
|
|
|
static void send_linger_ping(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
struct ceph_osd_request *req = lreq->ping_req;
|
|
struct ceph_osd_req_op *op = &req->r_ops[0];
|
|
|
|
if (ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD)) {
|
|
dout("%s PAUSERD\n", __func__);
|
|
return;
|
|
}
|
|
|
|
lreq->ping_sent = jiffies;
|
|
dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n",
|
|
__func__, lreq, lreq->linger_id, lreq->ping_sent,
|
|
lreq->register_gen);
|
|
|
|
if (req->r_osd)
|
|
cancel_linger_request(req);
|
|
|
|
request_reinit(req);
|
|
target_copy(&req->r_t, &lreq->t);
|
|
|
|
WARN_ON(op->op != CEPH_OSD_OP_WATCH ||
|
|
op->watch.cookie != lreq->linger_id ||
|
|
op->watch.op != CEPH_OSD_WATCH_OP_PING);
|
|
op->watch.gen = lreq->register_gen;
|
|
req->r_callback = linger_ping_cb;
|
|
req->r_priv = linger_get(lreq);
|
|
req->r_linger = true;
|
|
|
|
ceph_osdc_get_request(req);
|
|
account_request(req);
|
|
req->r_tid = atomic64_inc_return(&osdc->last_tid);
|
|
link_request(lreq->osd, req);
|
|
send_request(req);
|
|
}
|
|
|
|
static void linger_submit(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
struct ceph_osd *osd;
|
|
|
|
calc_target(osdc, &lreq->t, &lreq->last_force_resend, false);
|
|
osd = lookup_create_osd(osdc, lreq->t.osd, true);
|
|
link_linger(osd, lreq);
|
|
|
|
send_linger(lreq);
|
|
}
|
|
|
|
static void cancel_linger_map_check(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
struct ceph_osd_linger_request *lookup_lreq;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
|
|
lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks,
|
|
lreq->linger_id);
|
|
if (!lookup_lreq)
|
|
return;
|
|
|
|
WARN_ON(lookup_lreq != lreq);
|
|
erase_linger_mc(&osdc->linger_map_checks, lreq);
|
|
linger_put(lreq);
|
|
}
|
|
|
|
/*
|
|
* @lreq has to be both registered and linked.
|
|
*/
|
|
static void __linger_cancel(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
if (lreq->is_watch && lreq->ping_req->r_osd)
|
|
cancel_linger_request(lreq->ping_req);
|
|
if (lreq->reg_req->r_osd)
|
|
cancel_linger_request(lreq->reg_req);
|
|
cancel_linger_map_check(lreq);
|
|
unlink_linger(lreq->osd, lreq);
|
|
linger_unregister(lreq);
|
|
}
|
|
|
|
static void linger_cancel(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
|
|
down_write(&osdc->lock);
|
|
if (__linger_registered(lreq))
|
|
__linger_cancel(lreq);
|
|
up_write(&osdc->lock);
|
|
}
|
|
|
|
static void send_linger_map_check(struct ceph_osd_linger_request *lreq);
|
|
|
|
static void check_linger_pool_dne(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
struct ceph_osdmap *map = osdc->osdmap;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
WARN_ON(!map->epoch);
|
|
|
|
if (lreq->register_gen) {
|
|
lreq->map_dne_bound = map->epoch;
|
|
dout("%s lreq %p linger_id %llu pool disappeared\n", __func__,
|
|
lreq, lreq->linger_id);
|
|
} else {
|
|
dout("%s lreq %p linger_id %llu map_dne_bound %u have %u\n",
|
|
__func__, lreq, lreq->linger_id, lreq->map_dne_bound,
|
|
map->epoch);
|
|
}
|
|
|
|
if (lreq->map_dne_bound) {
|
|
if (map->epoch >= lreq->map_dne_bound) {
|
|
/* we had a new enough map */
|
|
pr_info("linger_id %llu pool does not exist\n",
|
|
lreq->linger_id);
|
|
linger_reg_commit_complete(lreq, -ENOENT);
|
|
__linger_cancel(lreq);
|
|
}
|
|
} else {
|
|
send_linger_map_check(lreq);
|
|
}
|
|
}
|
|
|
|
static void linger_map_check_cb(struct ceph_mon_generic_request *greq)
|
|
{
|
|
struct ceph_osd_client *osdc = &greq->monc->client->osdc;
|
|
struct ceph_osd_linger_request *lreq;
|
|
u64 linger_id = greq->private_data;
|
|
|
|
WARN_ON(greq->result || !greq->u.newest);
|
|
|
|
down_write(&osdc->lock);
|
|
lreq = lookup_linger_mc(&osdc->linger_map_checks, linger_id);
|
|
if (!lreq) {
|
|
dout("%s linger_id %llu dne\n", __func__, linger_id);
|
|
goto out_unlock;
|
|
}
|
|
|
|
dout("%s lreq %p linger_id %llu map_dne_bound %u newest %llu\n",
|
|
__func__, lreq, lreq->linger_id, lreq->map_dne_bound,
|
|
greq->u.newest);
|
|
if (!lreq->map_dne_bound)
|
|
lreq->map_dne_bound = greq->u.newest;
|
|
erase_linger_mc(&osdc->linger_map_checks, lreq);
|
|
check_linger_pool_dne(lreq);
|
|
|
|
linger_put(lreq);
|
|
out_unlock:
|
|
up_write(&osdc->lock);
|
|
}
|
|
|
|
static void send_linger_map_check(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
struct ceph_osd_linger_request *lookup_lreq;
|
|
int ret;
|
|
|
|
verify_osdc_wrlocked(osdc);
|
|
|
|
lookup_lreq = lookup_linger_mc(&osdc->linger_map_checks,
|
|
lreq->linger_id);
|
|
if (lookup_lreq) {
|
|
WARN_ON(lookup_lreq != lreq);
|
|
return;
|
|
}
|
|
|
|
linger_get(lreq);
|
|
insert_linger_mc(&osdc->linger_map_checks, lreq);
|
|
ret = ceph_monc_get_version_async(&osdc->client->monc, "osdmap",
|
|
linger_map_check_cb, lreq->linger_id);
|
|
WARN_ON(ret);
|
|
}
|
|
|
|
static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
int ret;
|
|
|
|
dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id);
|
|
ret = wait_for_completion_interruptible(&lreq->reg_commit_wait);
|
|
return ret ?: lreq->reg_commit_error;
|
|
}
|
|
|
|
static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
int ret;
|
|
|
|
dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id);
|
|
ret = wait_for_completion_interruptible(&lreq->notify_finish_wait);
|
|
return ret ?: lreq->notify_finish_error;
|
|
}
|
|
|
|
/*
|
|
* Timeout callback, called every N seconds. When 1 or more OSD
|
|
* requests has been active for more than N seconds, we send a keepalive
|
|
* (tag + timestamp) to its OSD to ensure any communications channel
|
|
* reset is detected.
|
|
*/
|
|
static void handle_timeout(struct work_struct *work)
|
|
{
|
|
struct ceph_osd_client *osdc =
|
|
container_of(work, struct ceph_osd_client, timeout_work.work);
|
|
struct ceph_options *opts = osdc->client->options;
|
|
unsigned long cutoff = jiffies - opts->osd_keepalive_timeout;
|
|
LIST_HEAD(slow_osds);
|
|
struct rb_node *n, *p;
|
|
|
|
dout("%s osdc %p\n", __func__, osdc);
|
|
down_write(&osdc->lock);
|
|
|
|
/*
|
|
* ping osds that are a bit slow. this ensures that if there
|
|
* is a break in the TCP connection we will notice, and reopen
|
|
* a connection with that osd (from the fault callback).
|
|
*/
|
|
for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
|
|
struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
|
|
bool found = false;
|
|
|
|
for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(p, struct ceph_osd_request, r_node);
|
|
|
|
if (time_before(req->r_stamp, cutoff)) {
|
|
dout(" req %p tid %llu on osd%d is laggy\n",
|
|
req, req->r_tid, osd->o_osd);
|
|
found = true;
|
|
}
|
|
}
|
|
for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) {
|
|
struct ceph_osd_linger_request *lreq =
|
|
rb_entry(p, struct ceph_osd_linger_request, node);
|
|
|
|
dout(" lreq %p linger_id %llu is served by osd%d\n",
|
|
lreq, lreq->linger_id, osd->o_osd);
|
|
found = true;
|
|
|
|
mutex_lock(&lreq->lock);
|
|
if (lreq->is_watch && lreq->committed && !lreq->last_error)
|
|
send_linger_ping(lreq);
|
|
mutex_unlock(&lreq->lock);
|
|
}
|
|
|
|
if (found)
|
|
list_move_tail(&osd->o_keepalive_item, &slow_osds);
|
|
}
|
|
|
|
if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds))
|
|
maybe_request_map(osdc);
|
|
|
|
while (!list_empty(&slow_osds)) {
|
|
struct ceph_osd *osd = list_first_entry(&slow_osds,
|
|
struct ceph_osd,
|
|
o_keepalive_item);
|
|
list_del_init(&osd->o_keepalive_item);
|
|
ceph_con_keepalive(&osd->o_con);
|
|
}
|
|
|
|
up_write(&osdc->lock);
|
|
schedule_delayed_work(&osdc->timeout_work,
|
|
osdc->client->options->osd_keepalive_timeout);
|
|
}
|
|
|
|
static void handle_osds_timeout(struct work_struct *work)
|
|
{
|
|
struct ceph_osd_client *osdc =
|
|
container_of(work, struct ceph_osd_client,
|
|
osds_timeout_work.work);
|
|
unsigned long delay = osdc->client->options->osd_idle_ttl / 4;
|
|
struct ceph_osd *osd, *nosd;
|
|
|
|
dout("%s osdc %p\n", __func__, osdc);
|
|
down_write(&osdc->lock);
|
|
list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) {
|
|
if (time_before(jiffies, osd->lru_ttl))
|
|
break;
|
|
|
|
WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests));
|
|
WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests));
|
|
close_osd(osd);
|
|
}
|
|
|
|
up_write(&osdc->lock);
|
|
schedule_delayed_work(&osdc->osds_timeout_work,
|
|
round_jiffies_relative(delay));
|
|
}
|
|
|
|
static int ceph_oloc_decode(void **p, void *end,
|
|
struct ceph_object_locator *oloc)
|
|
{
|
|
u8 struct_v, struct_cv;
|
|
u32 len;
|
|
void *struct_end;
|
|
int ret = 0;
|
|
|
|
ceph_decode_need(p, end, 1 + 1 + 4, e_inval);
|
|
struct_v = ceph_decode_8(p);
|
|
struct_cv = ceph_decode_8(p);
|
|
if (struct_v < 3) {
|
|
pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
|
|
struct_v, struct_cv);
|
|
goto e_inval;
|
|
}
|
|
if (struct_cv > 6) {
|
|
pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
|
|
struct_v, struct_cv);
|
|
goto e_inval;
|
|
}
|
|
len = ceph_decode_32(p);
|
|
ceph_decode_need(p, end, len, e_inval);
|
|
struct_end = *p + len;
|
|
|
|
oloc->pool = ceph_decode_64(p);
|
|
*p += 4; /* skip preferred */
|
|
|
|
len = ceph_decode_32(p);
|
|
if (len > 0) {
|
|
pr_warn("ceph_object_locator::key is set\n");
|
|
goto e_inval;
|
|
}
|
|
|
|
if (struct_v >= 5) {
|
|
bool changed = false;
|
|
|
|
len = ceph_decode_32(p);
|
|
if (len > 0) {
|
|
ceph_decode_need(p, end, len, e_inval);
|
|
if (!oloc->pool_ns ||
|
|
ceph_compare_string(oloc->pool_ns, *p, len))
|
|
changed = true;
|
|
*p += len;
|
|
} else {
|
|
if (oloc->pool_ns)
|
|
changed = true;
|
|
}
|
|
if (changed) {
|
|
/* redirect changes namespace */
|
|
pr_warn("ceph_object_locator::nspace is changed\n");
|
|
goto e_inval;
|
|
}
|
|
}
|
|
|
|
if (struct_v >= 6) {
|
|
s64 hash = ceph_decode_64(p);
|
|
if (hash != -1) {
|
|
pr_warn("ceph_object_locator::hash is set\n");
|
|
goto e_inval;
|
|
}
|
|
}
|
|
|
|
/* skip the rest */
|
|
*p = struct_end;
|
|
out:
|
|
return ret;
|
|
|
|
e_inval:
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
static int ceph_redirect_decode(void **p, void *end,
|
|
struct ceph_request_redirect *redir)
|
|
{
|
|
u8 struct_v, struct_cv;
|
|
u32 len;
|
|
void *struct_end;
|
|
int ret;
|
|
|
|
ceph_decode_need(p, end, 1 + 1 + 4, e_inval);
|
|
struct_v = ceph_decode_8(p);
|
|
struct_cv = ceph_decode_8(p);
|
|
if (struct_cv > 1) {
|
|
pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
|
|
struct_v, struct_cv);
|
|
goto e_inval;
|
|
}
|
|
len = ceph_decode_32(p);
|
|
ceph_decode_need(p, end, len, e_inval);
|
|
struct_end = *p + len;
|
|
|
|
ret = ceph_oloc_decode(p, end, &redir->oloc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
len = ceph_decode_32(p);
|
|
if (len > 0) {
|
|
pr_warn("ceph_request_redirect::object_name is set\n");
|
|
goto e_inval;
|
|
}
|
|
|
|
len = ceph_decode_32(p);
|
|
*p += len; /* skip osd_instructions */
|
|
|
|
/* skip the rest */
|
|
*p = struct_end;
|
|
out:
|
|
return ret;
|
|
|
|
e_inval:
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
struct MOSDOpReply {
|
|
struct ceph_pg pgid;
|
|
u64 flags;
|
|
int result;
|
|
u32 epoch;
|
|
int num_ops;
|
|
u32 outdata_len[CEPH_OSD_MAX_OPS];
|
|
s32 rval[CEPH_OSD_MAX_OPS];
|
|
int retry_attempt;
|
|
struct ceph_eversion replay_version;
|
|
u64 user_version;
|
|
struct ceph_request_redirect redirect;
|
|
};
|
|
|
|
static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m)
|
|
{
|
|
void *p = msg->front.iov_base;
|
|
void *const end = p + msg->front.iov_len;
|
|
u16 version = le16_to_cpu(msg->hdr.version);
|
|
struct ceph_eversion bad_replay_version;
|
|
u8 decode_redir;
|
|
u32 len;
|
|
int ret;
|
|
int i;
|
|
|
|
ceph_decode_32_safe(&p, end, len, e_inval);
|
|
ceph_decode_need(&p, end, len, e_inval);
|
|
p += len; /* skip oid */
|
|
|
|
ret = ceph_decode_pgid(&p, end, &m->pgid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ceph_decode_64_safe(&p, end, m->flags, e_inval);
|
|
ceph_decode_32_safe(&p, end, m->result, e_inval);
|
|
ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval);
|
|
memcpy(&bad_replay_version, p, sizeof(bad_replay_version));
|
|
p += sizeof(bad_replay_version);
|
|
ceph_decode_32_safe(&p, end, m->epoch, e_inval);
|
|
|
|
ceph_decode_32_safe(&p, end, m->num_ops, e_inval);
|
|
if (m->num_ops > ARRAY_SIZE(m->outdata_len))
|
|
goto e_inval;
|
|
|
|
ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op),
|
|
e_inval);
|
|
for (i = 0; i < m->num_ops; i++) {
|
|
struct ceph_osd_op *op = p;
|
|
|
|
m->outdata_len[i] = le32_to_cpu(op->payload_len);
|
|
p += sizeof(*op);
|
|
}
|
|
|
|
ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval);
|
|
for (i = 0; i < m->num_ops; i++)
|
|
ceph_decode_32_safe(&p, end, m->rval[i], e_inval);
|
|
|
|
if (version >= 5) {
|
|
ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval);
|
|
memcpy(&m->replay_version, p, sizeof(m->replay_version));
|
|
p += sizeof(m->replay_version);
|
|
ceph_decode_64_safe(&p, end, m->user_version, e_inval);
|
|
} else {
|
|
m->replay_version = bad_replay_version; /* struct */
|
|
m->user_version = le64_to_cpu(m->replay_version.version);
|
|
}
|
|
|
|
if (version >= 6) {
|
|
if (version >= 7)
|
|
ceph_decode_8_safe(&p, end, decode_redir, e_inval);
|
|
else
|
|
decode_redir = 1;
|
|
} else {
|
|
decode_redir = 0;
|
|
}
|
|
|
|
if (decode_redir) {
|
|
ret = ceph_redirect_decode(&p, end, &m->redirect);
|
|
if (ret)
|
|
return ret;
|
|
} else {
|
|
ceph_oloc_init(&m->redirect.oloc);
|
|
}
|
|
|
|
return 0;
|
|
|
|
e_inval:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* We are done with @req if
|
|
* - @m is a safe reply, or
|
|
* - @m is an unsafe reply and we didn't want a safe one
|
|
*/
|
|
static bool done_request(const struct ceph_osd_request *req,
|
|
const struct MOSDOpReply *m)
|
|
{
|
|
return (m->result < 0 ||
|
|
(m->flags & CEPH_OSD_FLAG_ONDISK) ||
|
|
!(req->r_flags & CEPH_OSD_FLAG_ONDISK));
|
|
}
|
|
|
|
/*
|
|
* handle osd op reply. either call the callback if it is specified,
|
|
* or do the completion to wake up the waiting thread.
|
|
*
|
|
* ->r_unsafe_callback is set? yes no
|
|
*
|
|
* first reply is OK (needed r_cb/r_completion, r_cb/r_completion,
|
|
* any or needed/got safe) r_done_completion r_done_completion
|
|
*
|
|
* first reply is unsafe r_unsafe_cb(true) (nothing)
|
|
*
|
|
* when we get the safe reply r_unsafe_cb(false), r_cb/r_completion,
|
|
* r_done_completion r_done_completion
|
|
*/
|
|
static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
|
|
{
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
struct ceph_osd_request *req;
|
|
struct MOSDOpReply m;
|
|
u64 tid = le64_to_cpu(msg->hdr.tid);
|
|
u32 data_len = 0;
|
|
bool already_acked;
|
|
int ret;
|
|
int i;
|
|
|
|
dout("%s msg %p tid %llu\n", __func__, msg, tid);
|
|
|
|
down_read(&osdc->lock);
|
|
if (!osd_registered(osd)) {
|
|
dout("%s osd%d unknown\n", __func__, osd->o_osd);
|
|
goto out_unlock_osdc;
|
|
}
|
|
WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num));
|
|
|
|
mutex_lock(&osd->lock);
|
|
req = lookup_request(&osd->o_requests, tid);
|
|
if (!req) {
|
|
dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid);
|
|
goto out_unlock_session;
|
|
}
|
|
|
|
m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns;
|
|
ret = decode_MOSDOpReply(msg, &m);
|
|
m.redirect.oloc.pool_ns = NULL;
|
|
if (ret) {
|
|
pr_err("failed to decode MOSDOpReply for tid %llu: %d\n",
|
|
req->r_tid, ret);
|
|
ceph_msg_dump(msg);
|
|
goto fail_request;
|
|
}
|
|
dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n",
|
|
__func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed,
|
|
m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch),
|
|
le64_to_cpu(m.replay_version.version), m.user_version);
|
|
|
|
if (m.retry_attempt >= 0) {
|
|
if (m.retry_attempt != req->r_attempts - 1) {
|
|
dout("req %p tid %llu retry_attempt %d != %d, ignoring\n",
|
|
req, req->r_tid, m.retry_attempt,
|
|
req->r_attempts - 1);
|
|
goto out_unlock_session;
|
|
}
|
|
} else {
|
|
WARN_ON(1); /* MOSDOpReply v4 is assumed */
|
|
}
|
|
|
|
if (!ceph_oloc_empty(&m.redirect.oloc)) {
|
|
dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid,
|
|
m.redirect.oloc.pool);
|
|
unlink_request(osd, req);
|
|
mutex_unlock(&osd->lock);
|
|
|
|
/*
|
|
* Not ceph_oloc_copy() - changing pool_ns is not
|
|
* supported.
|
|
*/
|
|
req->r_t.target_oloc.pool = m.redirect.oloc.pool;
|
|
req->r_flags |= CEPH_OSD_FLAG_REDIRECTED;
|
|
req->r_tid = 0;
|
|
__submit_request(req, false);
|
|
goto out_unlock_osdc;
|
|
}
|
|
|
|
if (m.num_ops != req->r_num_ops) {
|
|
pr_err("num_ops %d != %d for tid %llu\n", m.num_ops,
|
|
req->r_num_ops, req->r_tid);
|
|
goto fail_request;
|
|
}
|
|
for (i = 0; i < req->r_num_ops; i++) {
|
|
dout(" req %p tid %llu op %d rval %d len %u\n", req,
|
|
req->r_tid, i, m.rval[i], m.outdata_len[i]);
|
|
req->r_ops[i].rval = m.rval[i];
|
|
req->r_ops[i].outdata_len = m.outdata_len[i];
|
|
data_len += m.outdata_len[i];
|
|
}
|
|
if (data_len != le32_to_cpu(msg->hdr.data_len)) {
|
|
pr_err("sum of lens %u != %u for tid %llu\n", data_len,
|
|
le32_to_cpu(msg->hdr.data_len), req->r_tid);
|
|
goto fail_request;
|
|
}
|
|
dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__,
|
|
req, req->r_tid, req->r_got_reply, m.result, data_len);
|
|
|
|
already_acked = req->r_got_reply;
|
|
if (!already_acked) {
|
|
req->r_result = m.result ?: data_len;
|
|
req->r_replay_version = m.replay_version; /* struct */
|
|
req->r_got_reply = true;
|
|
} else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) {
|
|
dout("req %p tid %llu dup ack\n", req, req->r_tid);
|
|
goto out_unlock_session;
|
|
}
|
|
|
|
if (done_request(req, &m)) {
|
|
__finish_request(req);
|
|
if (req->r_linger) {
|
|
WARN_ON(req->r_unsafe_callback);
|
|
dout("req %p tid %llu cb (locked)\n", req, req->r_tid);
|
|
__complete_request(req);
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&osd->lock);
|
|
up_read(&osdc->lock);
|
|
|
|
if (done_request(req, &m)) {
|
|
if (already_acked && req->r_unsafe_callback) {
|
|
dout("req %p tid %llu safe-cb\n", req, req->r_tid);
|
|
req->r_unsafe_callback(req, false);
|
|
} else if (!req->r_linger) {
|
|
dout("req %p tid %llu cb\n", req, req->r_tid);
|
|
__complete_request(req);
|
|
}
|
|
complete_all(&req->r_done_completion);
|
|
ceph_osdc_put_request(req);
|
|
} else {
|
|
if (req->r_unsafe_callback) {
|
|
dout("req %p tid %llu unsafe-cb\n", req, req->r_tid);
|
|
req->r_unsafe_callback(req, true);
|
|
} else {
|
|
WARN_ON(1);
|
|
}
|
|
}
|
|
|
|
return;
|
|
|
|
fail_request:
|
|
complete_request(req, -EIO);
|
|
out_unlock_session:
|
|
mutex_unlock(&osd->lock);
|
|
out_unlock_osdc:
|
|
up_read(&osdc->lock);
|
|
}
|
|
|
|
static void set_pool_was_full(struct ceph_osd_client *osdc)
|
|
{
|
|
struct rb_node *n;
|
|
|
|
for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) {
|
|
struct ceph_pg_pool_info *pi =
|
|
rb_entry(n, struct ceph_pg_pool_info, node);
|
|
|
|
pi->was_full = __pool_full(pi);
|
|
}
|
|
}
|
|
|
|
static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id)
|
|
{
|
|
struct ceph_pg_pool_info *pi;
|
|
|
|
pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id);
|
|
if (!pi)
|
|
return false;
|
|
|
|
return pi->was_full && !__pool_full(pi);
|
|
}
|
|
|
|
static enum calc_target_result
|
|
recalc_linger_target(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_client *osdc = lreq->osdc;
|
|
enum calc_target_result ct_res;
|
|
|
|
ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true);
|
|
if (ct_res == CALC_TARGET_NEED_RESEND) {
|
|
struct ceph_osd *osd;
|
|
|
|
osd = lookup_create_osd(osdc, lreq->t.osd, true);
|
|
if (osd != lreq->osd) {
|
|
unlink_linger(lreq->osd, lreq);
|
|
link_linger(osd, lreq);
|
|
}
|
|
}
|
|
|
|
return ct_res;
|
|
}
|
|
|
|
/*
|
|
* Requeue requests whose mapping to an OSD has changed.
|
|
*/
|
|
static void scan_requests(struct ceph_osd *osd,
|
|
bool force_resend,
|
|
bool cleared_full,
|
|
bool check_pool_cleared_full,
|
|
struct rb_root *need_resend,
|
|
struct list_head *need_resend_linger)
|
|
{
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
struct rb_node *n;
|
|
bool force_resend_writes;
|
|
|
|
for (n = rb_first(&osd->o_linger_requests); n; ) {
|
|
struct ceph_osd_linger_request *lreq =
|
|
rb_entry(n, struct ceph_osd_linger_request, node);
|
|
enum calc_target_result ct_res;
|
|
|
|
n = rb_next(n); /* recalc_linger_target() */
|
|
|
|
dout("%s lreq %p linger_id %llu\n", __func__, lreq,
|
|
lreq->linger_id);
|
|
ct_res = recalc_linger_target(lreq);
|
|
switch (ct_res) {
|
|
case CALC_TARGET_NO_ACTION:
|
|
force_resend_writes = cleared_full ||
|
|
(check_pool_cleared_full &&
|
|
pool_cleared_full(osdc, lreq->t.base_oloc.pool));
|
|
if (!force_resend && !force_resend_writes)
|
|
break;
|
|
|
|
/* fall through */
|
|
case CALC_TARGET_NEED_RESEND:
|
|
cancel_linger_map_check(lreq);
|
|
/*
|
|
* scan_requests() for the previous epoch(s)
|
|
* may have already added it to the list, since
|
|
* it's not unlinked here.
|
|
*/
|
|
if (list_empty(&lreq->scan_item))
|
|
list_add_tail(&lreq->scan_item, need_resend_linger);
|
|
break;
|
|
case CALC_TARGET_POOL_DNE:
|
|
check_linger_pool_dne(lreq);
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (n = rb_first(&osd->o_requests); n; ) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(n, struct ceph_osd_request, r_node);
|
|
enum calc_target_result ct_res;
|
|
|
|
n = rb_next(n); /* unlink_request(), check_pool_dne() */
|
|
|
|
dout("%s req %p tid %llu\n", __func__, req, req->r_tid);
|
|
ct_res = calc_target(osdc, &req->r_t,
|
|
&req->r_last_force_resend, false);
|
|
switch (ct_res) {
|
|
case CALC_TARGET_NO_ACTION:
|
|
force_resend_writes = cleared_full ||
|
|
(check_pool_cleared_full &&
|
|
pool_cleared_full(osdc, req->r_t.base_oloc.pool));
|
|
if (!force_resend &&
|
|
(!(req->r_flags & CEPH_OSD_FLAG_WRITE) ||
|
|
!force_resend_writes))
|
|
break;
|
|
|
|
/* fall through */
|
|
case CALC_TARGET_NEED_RESEND:
|
|
cancel_map_check(req);
|
|
unlink_request(osd, req);
|
|
insert_request(need_resend, req);
|
|
break;
|
|
case CALC_TARGET_POOL_DNE:
|
|
check_pool_dne(req);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int handle_one_map(struct ceph_osd_client *osdc,
|
|
void *p, void *end, bool incremental,
|
|
struct rb_root *need_resend,
|
|
struct list_head *need_resend_linger)
|
|
{
|
|
struct ceph_osdmap *newmap;
|
|
struct rb_node *n;
|
|
bool skipped_map = false;
|
|
bool was_full;
|
|
|
|
was_full = ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL);
|
|
set_pool_was_full(osdc);
|
|
|
|
if (incremental)
|
|
newmap = osdmap_apply_incremental(&p, end, osdc->osdmap);
|
|
else
|
|
newmap = ceph_osdmap_decode(&p, end);
|
|
if (IS_ERR(newmap))
|
|
return PTR_ERR(newmap);
|
|
|
|
if (newmap != osdc->osdmap) {
|
|
/*
|
|
* Preserve ->was_full before destroying the old map.
|
|
* For pools that weren't in the old map, ->was_full
|
|
* should be false.
|
|
*/
|
|
for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) {
|
|
struct ceph_pg_pool_info *pi =
|
|
rb_entry(n, struct ceph_pg_pool_info, node);
|
|
struct ceph_pg_pool_info *old_pi;
|
|
|
|
old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id);
|
|
if (old_pi)
|
|
pi->was_full = old_pi->was_full;
|
|
else
|
|
WARN_ON(pi->was_full);
|
|
}
|
|
|
|
if (osdc->osdmap->epoch &&
|
|
osdc->osdmap->epoch + 1 < newmap->epoch) {
|
|
WARN_ON(incremental);
|
|
skipped_map = true;
|
|
}
|
|
|
|
ceph_osdmap_destroy(osdc->osdmap);
|
|
osdc->osdmap = newmap;
|
|
}
|
|
|
|
was_full &= !ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL);
|
|
scan_requests(&osdc->homeless_osd, skipped_map, was_full, true,
|
|
need_resend, need_resend_linger);
|
|
|
|
for (n = rb_first(&osdc->osds); n; ) {
|
|
struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
|
|
|
|
n = rb_next(n); /* close_osd() */
|
|
|
|
scan_requests(osd, skipped_map, was_full, true, need_resend,
|
|
need_resend_linger);
|
|
if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
|
|
memcmp(&osd->o_con.peer_addr,
|
|
ceph_osd_addr(osdc->osdmap, osd->o_osd),
|
|
sizeof(struct ceph_entity_addr)))
|
|
close_osd(osd);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void kick_requests(struct ceph_osd_client *osdc,
|
|
struct rb_root *need_resend,
|
|
struct list_head *need_resend_linger)
|
|
{
|
|
struct ceph_osd_linger_request *lreq, *nlreq;
|
|
struct rb_node *n;
|
|
|
|
for (n = rb_first(need_resend); n; ) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(n, struct ceph_osd_request, r_node);
|
|
struct ceph_osd *osd;
|
|
|
|
n = rb_next(n);
|
|
erase_request(need_resend, req); /* before link_request() */
|
|
|
|
WARN_ON(req->r_osd);
|
|
calc_target(osdc, &req->r_t, NULL, false);
|
|
osd = lookup_create_osd(osdc, req->r_t.osd, true);
|
|
link_request(osd, req);
|
|
if (!req->r_linger) {
|
|
if (!osd_homeless(osd) && !req->r_t.paused)
|
|
send_request(req);
|
|
} else {
|
|
cancel_linger_request(req);
|
|
}
|
|
}
|
|
|
|
list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) {
|
|
if (!osd_homeless(lreq->osd))
|
|
send_linger(lreq);
|
|
|
|
list_del_init(&lreq->scan_item);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Process updated osd map.
|
|
*
|
|
* The message contains any number of incremental and full maps, normally
|
|
* indicating some sort of topology change in the cluster. Kick requests
|
|
* off to different OSDs as needed.
|
|
*/
|
|
void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
|
|
{
|
|
void *p = msg->front.iov_base;
|
|
void *const end = p + msg->front.iov_len;
|
|
u32 nr_maps, maplen;
|
|
u32 epoch;
|
|
struct ceph_fsid fsid;
|
|
struct rb_root need_resend = RB_ROOT;
|
|
LIST_HEAD(need_resend_linger);
|
|
bool handled_incremental = false;
|
|
bool was_pauserd, was_pausewr;
|
|
bool pauserd, pausewr;
|
|
int err;
|
|
|
|
dout("%s have %u\n", __func__, osdc->osdmap->epoch);
|
|
down_write(&osdc->lock);
|
|
|
|
/* verify fsid */
|
|
ceph_decode_need(&p, end, sizeof(fsid), bad);
|
|
ceph_decode_copy(&p, &fsid, sizeof(fsid));
|
|
if (ceph_check_fsid(osdc->client, &fsid) < 0)
|
|
goto bad;
|
|
|
|
was_pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD);
|
|
was_pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) ||
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) ||
|
|
have_pool_full(osdc);
|
|
|
|
/* incremental maps */
|
|
ceph_decode_32_safe(&p, end, nr_maps, bad);
|
|
dout(" %d inc maps\n", nr_maps);
|
|
while (nr_maps > 0) {
|
|
ceph_decode_need(&p, end, 2*sizeof(u32), bad);
|
|
epoch = ceph_decode_32(&p);
|
|
maplen = ceph_decode_32(&p);
|
|
ceph_decode_need(&p, end, maplen, bad);
|
|
if (osdc->osdmap->epoch &&
|
|
osdc->osdmap->epoch + 1 == epoch) {
|
|
dout("applying incremental map %u len %d\n",
|
|
epoch, maplen);
|
|
err = handle_one_map(osdc, p, p + maplen, true,
|
|
&need_resend, &need_resend_linger);
|
|
if (err)
|
|
goto bad;
|
|
handled_incremental = true;
|
|
} else {
|
|
dout("ignoring incremental map %u len %d\n",
|
|
epoch, maplen);
|
|
}
|
|
p += maplen;
|
|
nr_maps--;
|
|
}
|
|
if (handled_incremental)
|
|
goto done;
|
|
|
|
/* full maps */
|
|
ceph_decode_32_safe(&p, end, nr_maps, bad);
|
|
dout(" %d full maps\n", nr_maps);
|
|
while (nr_maps) {
|
|
ceph_decode_need(&p, end, 2*sizeof(u32), bad);
|
|
epoch = ceph_decode_32(&p);
|
|
maplen = ceph_decode_32(&p);
|
|
ceph_decode_need(&p, end, maplen, bad);
|
|
if (nr_maps > 1) {
|
|
dout("skipping non-latest full map %u len %d\n",
|
|
epoch, maplen);
|
|
} else if (osdc->osdmap->epoch >= epoch) {
|
|
dout("skipping full map %u len %d, "
|
|
"older than our %u\n", epoch, maplen,
|
|
osdc->osdmap->epoch);
|
|
} else {
|
|
dout("taking full map %u len %d\n", epoch, maplen);
|
|
err = handle_one_map(osdc, p, p + maplen, false,
|
|
&need_resend, &need_resend_linger);
|
|
if (err)
|
|
goto bad;
|
|
}
|
|
p += maplen;
|
|
nr_maps--;
|
|
}
|
|
|
|
done:
|
|
/*
|
|
* subscribe to subsequent osdmap updates if full to ensure
|
|
* we find out when we are no longer full and stop returning
|
|
* ENOSPC.
|
|
*/
|
|
pauserd = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSERD);
|
|
pausewr = ceph_osdmap_flag(osdc, CEPH_OSDMAP_PAUSEWR) ||
|
|
ceph_osdmap_flag(osdc, CEPH_OSDMAP_FULL) ||
|
|
have_pool_full(osdc);
|
|
if (was_pauserd || was_pausewr || pauserd || pausewr)
|
|
maybe_request_map(osdc);
|
|
|
|
kick_requests(osdc, &need_resend, &need_resend_linger);
|
|
|
|
ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP,
|
|
osdc->osdmap->epoch);
|
|
up_write(&osdc->lock);
|
|
wake_up_all(&osdc->client->auth_wq);
|
|
return;
|
|
|
|
bad:
|
|
pr_err("osdc handle_map corrupt msg\n");
|
|
ceph_msg_dump(msg);
|
|
up_write(&osdc->lock);
|
|
}
|
|
|
|
/*
|
|
* Resubmit requests pending on the given osd.
|
|
*/
|
|
static void kick_osd_requests(struct ceph_osd *osd)
|
|
{
|
|
struct rb_node *n;
|
|
|
|
for (n = rb_first(&osd->o_requests); n; ) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(n, struct ceph_osd_request, r_node);
|
|
|
|
n = rb_next(n); /* cancel_linger_request() */
|
|
|
|
if (!req->r_linger) {
|
|
if (!req->r_t.paused)
|
|
send_request(req);
|
|
} else {
|
|
cancel_linger_request(req);
|
|
}
|
|
}
|
|
for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) {
|
|
struct ceph_osd_linger_request *lreq =
|
|
rb_entry(n, struct ceph_osd_linger_request, node);
|
|
|
|
send_linger(lreq);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the osd connection drops, we need to resubmit all requests.
|
|
*/
|
|
static void osd_fault(struct ceph_connection *con)
|
|
{
|
|
struct ceph_osd *osd = con->private;
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
|
|
dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd);
|
|
|
|
down_write(&osdc->lock);
|
|
if (!osd_registered(osd)) {
|
|
dout("%s osd%d unknown\n", __func__, osd->o_osd);
|
|
goto out_unlock;
|
|
}
|
|
|
|
if (!reopen_osd(osd))
|
|
kick_osd_requests(osd);
|
|
maybe_request_map(osdc);
|
|
|
|
out_unlock:
|
|
up_write(&osdc->lock);
|
|
}
|
|
|
|
/*
|
|
* Process osd watch notifications
|
|
*/
|
|
static void handle_watch_notify(struct ceph_osd_client *osdc,
|
|
struct ceph_msg *msg)
|
|
{
|
|
void *p = msg->front.iov_base;
|
|
void *const end = p + msg->front.iov_len;
|
|
struct ceph_osd_linger_request *lreq;
|
|
struct linger_work *lwork;
|
|
u8 proto_ver, opcode;
|
|
u64 cookie, notify_id;
|
|
u64 notifier_id = 0;
|
|
s32 return_code = 0;
|
|
void *payload = NULL;
|
|
u32 payload_len = 0;
|
|
|
|
ceph_decode_8_safe(&p, end, proto_ver, bad);
|
|
ceph_decode_8_safe(&p, end, opcode, bad);
|
|
ceph_decode_64_safe(&p, end, cookie, bad);
|
|
p += 8; /* skip ver */
|
|
ceph_decode_64_safe(&p, end, notify_id, bad);
|
|
|
|
if (proto_ver >= 1) {
|
|
ceph_decode_32_safe(&p, end, payload_len, bad);
|
|
ceph_decode_need(&p, end, payload_len, bad);
|
|
payload = p;
|
|
p += payload_len;
|
|
}
|
|
|
|
if (le16_to_cpu(msg->hdr.version) >= 2)
|
|
ceph_decode_32_safe(&p, end, return_code, bad);
|
|
|
|
if (le16_to_cpu(msg->hdr.version) >= 3)
|
|
ceph_decode_64_safe(&p, end, notifier_id, bad);
|
|
|
|
down_read(&osdc->lock);
|
|
lreq = lookup_linger_osdc(&osdc->linger_requests, cookie);
|
|
if (!lreq) {
|
|
dout("%s opcode %d cookie %llu dne\n", __func__, opcode,
|
|
cookie);
|
|
goto out_unlock_osdc;
|
|
}
|
|
|
|
mutex_lock(&lreq->lock);
|
|
dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__,
|
|
opcode, cookie, lreq, lreq->is_watch);
|
|
if (opcode == CEPH_WATCH_EVENT_DISCONNECT) {
|
|
if (!lreq->last_error) {
|
|
lreq->last_error = -ENOTCONN;
|
|
queue_watch_error(lreq);
|
|
}
|
|
} else if (!lreq->is_watch) {
|
|
/* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */
|
|
if (lreq->notify_id && lreq->notify_id != notify_id) {
|
|
dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq,
|
|
lreq->notify_id, notify_id);
|
|
} else if (!completion_done(&lreq->notify_finish_wait)) {
|
|
struct ceph_msg_data *data =
|
|
list_first_entry_or_null(&msg->data,
|
|
struct ceph_msg_data,
|
|
links);
|
|
|
|
if (data) {
|
|
if (lreq->preply_pages) {
|
|
WARN_ON(data->type !=
|
|
CEPH_MSG_DATA_PAGES);
|
|
*lreq->preply_pages = data->pages;
|
|
*lreq->preply_len = data->length;
|
|
} else {
|
|
ceph_release_page_vector(data->pages,
|
|
calc_pages_for(0, data->length));
|
|
}
|
|
}
|
|
lreq->notify_finish_error = return_code;
|
|
complete_all(&lreq->notify_finish_wait);
|
|
}
|
|
} else {
|
|
/* CEPH_WATCH_EVENT_NOTIFY */
|
|
lwork = lwork_alloc(lreq, do_watch_notify);
|
|
if (!lwork) {
|
|
pr_err("failed to allocate notify-lwork\n");
|
|
goto out_unlock_lreq;
|
|
}
|
|
|
|
lwork->notify.notify_id = notify_id;
|
|
lwork->notify.notifier_id = notifier_id;
|
|
lwork->notify.payload = payload;
|
|
lwork->notify.payload_len = payload_len;
|
|
lwork->notify.msg = ceph_msg_get(msg);
|
|
lwork_queue(lwork);
|
|
}
|
|
|
|
out_unlock_lreq:
|
|
mutex_unlock(&lreq->lock);
|
|
out_unlock_osdc:
|
|
up_read(&osdc->lock);
|
|
return;
|
|
|
|
bad:
|
|
pr_err("osdc handle_watch_notify corrupt msg\n");
|
|
}
|
|
|
|
/*
|
|
* Register request, send initial attempt.
|
|
*/
|
|
int ceph_osdc_start_request(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_request *req,
|
|
bool nofail)
|
|
{
|
|
down_read(&osdc->lock);
|
|
submit_request(req, false);
|
|
up_read(&osdc->lock);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_start_request);
|
|
|
|
/*
|
|
* Unregister a registered request. The request is not completed:
|
|
* ->r_result isn't set and __complete_request() isn't called.
|
|
*/
|
|
void ceph_osdc_cancel_request(struct ceph_osd_request *req)
|
|
{
|
|
struct ceph_osd_client *osdc = req->r_osdc;
|
|
|
|
down_write(&osdc->lock);
|
|
if (req->r_osd)
|
|
cancel_request(req);
|
|
up_write(&osdc->lock);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_cancel_request);
|
|
|
|
/*
|
|
* @timeout: in jiffies, 0 means "wait forever"
|
|
*/
|
|
static int wait_request_timeout(struct ceph_osd_request *req,
|
|
unsigned long timeout)
|
|
{
|
|
long left;
|
|
|
|
dout("%s req %p tid %llu\n", __func__, req, req->r_tid);
|
|
left = wait_for_completion_killable_timeout(&req->r_completion,
|
|
ceph_timeout_jiffies(timeout));
|
|
if (left <= 0) {
|
|
left = left ?: -ETIMEDOUT;
|
|
ceph_osdc_cancel_request(req);
|
|
} else {
|
|
left = req->r_result; /* completed */
|
|
}
|
|
|
|
return left;
|
|
}
|
|
|
|
/*
|
|
* wait for a request to complete
|
|
*/
|
|
int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_request *req)
|
|
{
|
|
return wait_request_timeout(req, 0);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_wait_request);
|
|
|
|
/*
|
|
* sync - wait for all in-flight requests to flush. avoid starvation.
|
|
*/
|
|
void ceph_osdc_sync(struct ceph_osd_client *osdc)
|
|
{
|
|
struct rb_node *n, *p;
|
|
u64 last_tid = atomic64_read(&osdc->last_tid);
|
|
|
|
again:
|
|
down_read(&osdc->lock);
|
|
for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
|
|
struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
|
|
|
|
mutex_lock(&osd->lock);
|
|
for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) {
|
|
struct ceph_osd_request *req =
|
|
rb_entry(p, struct ceph_osd_request, r_node);
|
|
|
|
if (req->r_tid > last_tid)
|
|
break;
|
|
|
|
if (!(req->r_flags & CEPH_OSD_FLAG_WRITE))
|
|
continue;
|
|
|
|
ceph_osdc_get_request(req);
|
|
mutex_unlock(&osd->lock);
|
|
up_read(&osdc->lock);
|
|
dout("%s waiting on req %p tid %llu last_tid %llu\n",
|
|
__func__, req, req->r_tid, last_tid);
|
|
wait_for_completion(&req->r_done_completion);
|
|
ceph_osdc_put_request(req);
|
|
goto again;
|
|
}
|
|
|
|
mutex_unlock(&osd->lock);
|
|
}
|
|
|
|
up_read(&osdc->lock);
|
|
dout("%s done last_tid %llu\n", __func__, last_tid);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_sync);
|
|
|
|
static struct ceph_osd_request *
|
|
alloc_linger_request(struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
|
|
req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO);
|
|
if (!req)
|
|
return NULL;
|
|
|
|
ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid);
|
|
ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc);
|
|
|
|
if (ceph_osdc_alloc_messages(req, GFP_NOIO)) {
|
|
ceph_osdc_put_request(req);
|
|
return NULL;
|
|
}
|
|
|
|
return req;
|
|
}
|
|
|
|
/*
|
|
* Returns a handle, caller owns a ref.
|
|
*/
|
|
struct ceph_osd_linger_request *
|
|
ceph_osdc_watch(struct ceph_osd_client *osdc,
|
|
struct ceph_object_id *oid,
|
|
struct ceph_object_locator *oloc,
|
|
rados_watchcb2_t wcb,
|
|
rados_watcherrcb_t errcb,
|
|
void *data)
|
|
{
|
|
struct ceph_osd_linger_request *lreq;
|
|
int ret;
|
|
|
|
lreq = linger_alloc(osdc);
|
|
if (!lreq)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
lreq->is_watch = true;
|
|
lreq->wcb = wcb;
|
|
lreq->errcb = errcb;
|
|
lreq->data = data;
|
|
lreq->watch_valid_thru = jiffies;
|
|
|
|
ceph_oid_copy(&lreq->t.base_oid, oid);
|
|
ceph_oloc_copy(&lreq->t.base_oloc, oloc);
|
|
lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
|
|
lreq->mtime = CURRENT_TIME;
|
|
|
|
lreq->reg_req = alloc_linger_request(lreq);
|
|
if (!lreq->reg_req) {
|
|
ret = -ENOMEM;
|
|
goto err_put_lreq;
|
|
}
|
|
|
|
lreq->ping_req = alloc_linger_request(lreq);
|
|
if (!lreq->ping_req) {
|
|
ret = -ENOMEM;
|
|
goto err_put_lreq;
|
|
}
|
|
|
|
down_write(&osdc->lock);
|
|
linger_register(lreq); /* before osd_req_op_* */
|
|
osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id,
|
|
CEPH_OSD_WATCH_OP_WATCH);
|
|
osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id,
|
|
CEPH_OSD_WATCH_OP_PING);
|
|
linger_submit(lreq);
|
|
up_write(&osdc->lock);
|
|
|
|
ret = linger_reg_commit_wait(lreq);
|
|
if (ret) {
|
|
linger_cancel(lreq);
|
|
goto err_put_lreq;
|
|
}
|
|
|
|
return lreq;
|
|
|
|
err_put_lreq:
|
|
linger_put(lreq);
|
|
return ERR_PTR(ret);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_watch);
|
|
|
|
/*
|
|
* Releases a ref.
|
|
*
|
|
* Times out after mount_timeout to preserve rbd unmap behaviour
|
|
* introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap
|
|
* with mount_timeout").
|
|
*/
|
|
int ceph_osdc_unwatch(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_linger_request *lreq)
|
|
{
|
|
struct ceph_options *opts = osdc->client->options;
|
|
struct ceph_osd_request *req;
|
|
int ret;
|
|
|
|
req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid);
|
|
ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc);
|
|
req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
|
|
req->r_mtime = CURRENT_TIME;
|
|
osd_req_op_watch_init(req, 0, lreq->linger_id,
|
|
CEPH_OSD_WATCH_OP_UNWATCH);
|
|
|
|
ret = ceph_osdc_alloc_messages(req, GFP_NOIO);
|
|
if (ret)
|
|
goto out_put_req;
|
|
|
|
ceph_osdc_start_request(osdc, req, false);
|
|
linger_cancel(lreq);
|
|
linger_put(lreq);
|
|
ret = wait_request_timeout(req, opts->mount_timeout);
|
|
|
|
out_put_req:
|
|
ceph_osdc_put_request(req);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_unwatch);
|
|
|
|
static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which,
|
|
u64 notify_id, u64 cookie, void *payload,
|
|
size_t payload_len)
|
|
{
|
|
struct ceph_osd_req_op *op;
|
|
struct ceph_pagelist *pl;
|
|
int ret;
|
|
|
|
op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0);
|
|
|
|
pl = kmalloc(sizeof(*pl), GFP_NOIO);
|
|
if (!pl)
|
|
return -ENOMEM;
|
|
|
|
ceph_pagelist_init(pl);
|
|
ret = ceph_pagelist_encode_64(pl, notify_id);
|
|
ret |= ceph_pagelist_encode_64(pl, cookie);
|
|
if (payload) {
|
|
ret |= ceph_pagelist_encode_32(pl, payload_len);
|
|
ret |= ceph_pagelist_append(pl, payload, payload_len);
|
|
} else {
|
|
ret |= ceph_pagelist_encode_32(pl, 0);
|
|
}
|
|
if (ret) {
|
|
ceph_pagelist_release(pl);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl);
|
|
op->indata_len = pl->length;
|
|
return 0;
|
|
}
|
|
|
|
int ceph_osdc_notify_ack(struct ceph_osd_client *osdc,
|
|
struct ceph_object_id *oid,
|
|
struct ceph_object_locator *oloc,
|
|
u64 notify_id,
|
|
u64 cookie,
|
|
void *payload,
|
|
size_t payload_len)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
int ret;
|
|
|
|
req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
ceph_oid_copy(&req->r_base_oid, oid);
|
|
ceph_oloc_copy(&req->r_base_oloc, oloc);
|
|
req->r_flags = CEPH_OSD_FLAG_READ;
|
|
|
|
ret = ceph_osdc_alloc_messages(req, GFP_NOIO);
|
|
if (ret)
|
|
goto out_put_req;
|
|
|
|
ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload,
|
|
payload_len);
|
|
if (ret)
|
|
goto out_put_req;
|
|
|
|
ceph_osdc_start_request(osdc, req, false);
|
|
ret = ceph_osdc_wait_request(osdc, req);
|
|
|
|
out_put_req:
|
|
ceph_osdc_put_request(req);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_notify_ack);
|
|
|
|
static int osd_req_op_notify_init(struct ceph_osd_request *req, int which,
|
|
u64 cookie, u32 prot_ver, u32 timeout,
|
|
void *payload, size_t payload_len)
|
|
{
|
|
struct ceph_osd_req_op *op;
|
|
struct ceph_pagelist *pl;
|
|
int ret;
|
|
|
|
op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0);
|
|
op->notify.cookie = cookie;
|
|
|
|
pl = kmalloc(sizeof(*pl), GFP_NOIO);
|
|
if (!pl)
|
|
return -ENOMEM;
|
|
|
|
ceph_pagelist_init(pl);
|
|
ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */
|
|
ret |= ceph_pagelist_encode_32(pl, timeout);
|
|
ret |= ceph_pagelist_encode_32(pl, payload_len);
|
|
ret |= ceph_pagelist_append(pl, payload, payload_len);
|
|
if (ret) {
|
|
ceph_pagelist_release(pl);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ceph_osd_data_pagelist_init(&op->notify.request_data, pl);
|
|
op->indata_len = pl->length;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* @timeout: in seconds
|
|
*
|
|
* @preply_{pages,len} are initialized both on success and error.
|
|
* The caller is responsible for:
|
|
*
|
|
* ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len))
|
|
*/
|
|
int ceph_osdc_notify(struct ceph_osd_client *osdc,
|
|
struct ceph_object_id *oid,
|
|
struct ceph_object_locator *oloc,
|
|
void *payload,
|
|
size_t payload_len,
|
|
u32 timeout,
|
|
struct page ***preply_pages,
|
|
size_t *preply_len)
|
|
{
|
|
struct ceph_osd_linger_request *lreq;
|
|
struct page **pages;
|
|
int ret;
|
|
|
|
WARN_ON(!timeout);
|
|
if (preply_pages) {
|
|
*preply_pages = NULL;
|
|
*preply_len = 0;
|
|
}
|
|
|
|
lreq = linger_alloc(osdc);
|
|
if (!lreq)
|
|
return -ENOMEM;
|
|
|
|
lreq->preply_pages = preply_pages;
|
|
lreq->preply_len = preply_len;
|
|
|
|
ceph_oid_copy(&lreq->t.base_oid, oid);
|
|
ceph_oloc_copy(&lreq->t.base_oloc, oloc);
|
|
lreq->t.flags = CEPH_OSD_FLAG_READ;
|
|
|
|
lreq->reg_req = alloc_linger_request(lreq);
|
|
if (!lreq->reg_req) {
|
|
ret = -ENOMEM;
|
|
goto out_put_lreq;
|
|
}
|
|
|
|
/* for notify_id */
|
|
pages = ceph_alloc_page_vector(1, GFP_NOIO);
|
|
if (IS_ERR(pages)) {
|
|
ret = PTR_ERR(pages);
|
|
goto out_put_lreq;
|
|
}
|
|
|
|
down_write(&osdc->lock);
|
|
linger_register(lreq); /* before osd_req_op_* */
|
|
ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1,
|
|
timeout, payload, payload_len);
|
|
if (ret) {
|
|
linger_unregister(lreq);
|
|
up_write(&osdc->lock);
|
|
ceph_release_page_vector(pages, 1);
|
|
goto out_put_lreq;
|
|
}
|
|
ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify,
|
|
response_data),
|
|
pages, PAGE_SIZE, 0, false, true);
|
|
linger_submit(lreq);
|
|
up_write(&osdc->lock);
|
|
|
|
ret = linger_reg_commit_wait(lreq);
|
|
if (!ret)
|
|
ret = linger_notify_finish_wait(lreq);
|
|
else
|
|
dout("lreq %p failed to initiate notify %d\n", lreq, ret);
|
|
|
|
linger_cancel(lreq);
|
|
out_put_lreq:
|
|
linger_put(lreq);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_notify);
|
|
|
|
/*
|
|
* Return the number of milliseconds since the watch was last
|
|
* confirmed, or an error. If there is an error, the watch is no
|
|
* longer valid, and should be destroyed with ceph_osdc_unwatch().
|
|
*/
|
|
int ceph_osdc_watch_check(struct ceph_osd_client *osdc,
|
|
struct ceph_osd_linger_request *lreq)
|
|
{
|
|
unsigned long stamp, age;
|
|
int ret;
|
|
|
|
down_read(&osdc->lock);
|
|
mutex_lock(&lreq->lock);
|
|
stamp = lreq->watch_valid_thru;
|
|
if (!list_empty(&lreq->pending_lworks)) {
|
|
struct linger_work *lwork =
|
|
list_first_entry(&lreq->pending_lworks,
|
|
struct linger_work,
|
|
pending_item);
|
|
|
|
if (time_before(lwork->queued_stamp, stamp))
|
|
stamp = lwork->queued_stamp;
|
|
}
|
|
age = jiffies - stamp;
|
|
dout("%s lreq %p linger_id %llu age %lu last_error %d\n", __func__,
|
|
lreq, lreq->linger_id, age, lreq->last_error);
|
|
/* we are truncating to msecs, so return a safe upper bound */
|
|
ret = lreq->last_error ?: 1 + jiffies_to_msecs(age);
|
|
|
|
mutex_unlock(&lreq->lock);
|
|
up_read(&osdc->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int decode_watcher(void **p, void *end, struct ceph_watch_item *item)
|
|
{
|
|
u8 struct_v;
|
|
u32 struct_len;
|
|
int ret;
|
|
|
|
ret = ceph_start_decoding(p, end, 2, "watch_item_t",
|
|
&struct_v, &struct_len);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ceph_decode_copy(p, &item->name, sizeof(item->name));
|
|
item->cookie = ceph_decode_64(p);
|
|
*p += 4; /* skip timeout_seconds */
|
|
if (struct_v >= 2) {
|
|
ceph_decode_copy(p, &item->addr, sizeof(item->addr));
|
|
ceph_decode_addr(&item->addr);
|
|
}
|
|
|
|
dout("%s %s%llu cookie %llu addr %s\n", __func__,
|
|
ENTITY_NAME(item->name), item->cookie,
|
|
ceph_pr_addr(&item->addr.in_addr));
|
|
return 0;
|
|
}
|
|
|
|
static int decode_watchers(void **p, void *end,
|
|
struct ceph_watch_item **watchers,
|
|
u32 *num_watchers)
|
|
{
|
|
u8 struct_v;
|
|
u32 struct_len;
|
|
int i;
|
|
int ret;
|
|
|
|
ret = ceph_start_decoding(p, end, 1, "obj_list_watch_response_t",
|
|
&struct_v, &struct_len);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*num_watchers = ceph_decode_32(p);
|
|
*watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO);
|
|
if (!*watchers)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < *num_watchers; i++) {
|
|
ret = decode_watcher(p, end, *watchers + i);
|
|
if (ret) {
|
|
kfree(*watchers);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* On success, the caller is responsible for:
|
|
*
|
|
* kfree(watchers);
|
|
*/
|
|
int ceph_osdc_list_watchers(struct ceph_osd_client *osdc,
|
|
struct ceph_object_id *oid,
|
|
struct ceph_object_locator *oloc,
|
|
struct ceph_watch_item **watchers,
|
|
u32 *num_watchers)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
struct page **pages;
|
|
int ret;
|
|
|
|
req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
ceph_oid_copy(&req->r_base_oid, oid);
|
|
ceph_oloc_copy(&req->r_base_oloc, oloc);
|
|
req->r_flags = CEPH_OSD_FLAG_READ;
|
|
|
|
ret = ceph_osdc_alloc_messages(req, GFP_NOIO);
|
|
if (ret)
|
|
goto out_put_req;
|
|
|
|
pages = ceph_alloc_page_vector(1, GFP_NOIO);
|
|
if (IS_ERR(pages)) {
|
|
ret = PTR_ERR(pages);
|
|
goto out_put_req;
|
|
}
|
|
|
|
osd_req_op_init(req, 0, CEPH_OSD_OP_LIST_WATCHERS, 0);
|
|
ceph_osd_data_pages_init(osd_req_op_data(req, 0, list_watchers,
|
|
response_data),
|
|
pages, PAGE_SIZE, 0, false, true);
|
|
|
|
ceph_osdc_start_request(osdc, req, false);
|
|
ret = ceph_osdc_wait_request(osdc, req);
|
|
if (ret >= 0) {
|
|
void *p = page_address(pages[0]);
|
|
void *const end = p + req->r_ops[0].outdata_len;
|
|
|
|
ret = decode_watchers(&p, end, watchers, num_watchers);
|
|
}
|
|
|
|
out_put_req:
|
|
ceph_osdc_put_request(req);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_list_watchers);
|
|
|
|
/*
|
|
* Call all pending notify callbacks - for use after a watch is
|
|
* unregistered, to make sure no more callbacks for it will be invoked
|
|
*/
|
|
void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc)
|
|
{
|
|
dout("%s osdc %p\n", __func__, osdc);
|
|
flush_workqueue(osdc->notify_wq);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_flush_notifies);
|
|
|
|
void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc)
|
|
{
|
|
down_read(&osdc->lock);
|
|
maybe_request_map(osdc);
|
|
up_read(&osdc->lock);
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_maybe_request_map);
|
|
|
|
/*
|
|
* Execute an OSD class method on an object.
|
|
*
|
|
* @flags: CEPH_OSD_FLAG_*
|
|
* @resp_len: out param for reply length
|
|
*/
|
|
int ceph_osdc_call(struct ceph_osd_client *osdc,
|
|
struct ceph_object_id *oid,
|
|
struct ceph_object_locator *oloc,
|
|
const char *class, const char *method,
|
|
unsigned int flags,
|
|
struct page *req_page, size_t req_len,
|
|
struct page *resp_page, size_t *resp_len)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
int ret;
|
|
|
|
req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
ceph_oid_copy(&req->r_base_oid, oid);
|
|
ceph_oloc_copy(&req->r_base_oloc, oloc);
|
|
req->r_flags = flags;
|
|
|
|
ret = ceph_osdc_alloc_messages(req, GFP_NOIO);
|
|
if (ret)
|
|
goto out_put_req;
|
|
|
|
osd_req_op_cls_init(req, 0, CEPH_OSD_OP_CALL, class, method);
|
|
if (req_page)
|
|
osd_req_op_cls_request_data_pages(req, 0, &req_page, req_len,
|
|
0, false, false);
|
|
if (resp_page)
|
|
osd_req_op_cls_response_data_pages(req, 0, &resp_page,
|
|
PAGE_SIZE, 0, false, false);
|
|
|
|
ceph_osdc_start_request(osdc, req, false);
|
|
ret = ceph_osdc_wait_request(osdc, req);
|
|
if (ret >= 0) {
|
|
ret = req->r_ops[0].rval;
|
|
if (resp_page)
|
|
*resp_len = req->r_ops[0].outdata_len;
|
|
}
|
|
|
|
out_put_req:
|
|
ceph_osdc_put_request(req);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_call);
|
|
|
|
/*
|
|
* init, shutdown
|
|
*/
|
|
int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
|
|
{
|
|
int err;
|
|
|
|
dout("init\n");
|
|
osdc->client = client;
|
|
init_rwsem(&osdc->lock);
|
|
osdc->osds = RB_ROOT;
|
|
INIT_LIST_HEAD(&osdc->osd_lru);
|
|
spin_lock_init(&osdc->osd_lru_lock);
|
|
osd_init(&osdc->homeless_osd);
|
|
osdc->homeless_osd.o_osdc = osdc;
|
|
osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD;
|
|
osdc->last_linger_id = CEPH_LINGER_ID_START;
|
|
osdc->linger_requests = RB_ROOT;
|
|
osdc->map_checks = RB_ROOT;
|
|
osdc->linger_map_checks = RB_ROOT;
|
|
INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout);
|
|
INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
|
|
|
|
err = -ENOMEM;
|
|
osdc->osdmap = ceph_osdmap_alloc();
|
|
if (!osdc->osdmap)
|
|
goto out;
|
|
|
|
osdc->req_mempool = mempool_create_slab_pool(10,
|
|
ceph_osd_request_cache);
|
|
if (!osdc->req_mempool)
|
|
goto out_map;
|
|
|
|
err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP,
|
|
PAGE_SIZE, 10, true, "osd_op");
|
|
if (err < 0)
|
|
goto out_mempool;
|
|
err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY,
|
|
PAGE_SIZE, 10, true, "osd_op_reply");
|
|
if (err < 0)
|
|
goto out_msgpool;
|
|
|
|
err = -ENOMEM;
|
|
osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
|
|
if (!osdc->notify_wq)
|
|
goto out_msgpool_reply;
|
|
|
|
schedule_delayed_work(&osdc->timeout_work,
|
|
osdc->client->options->osd_keepalive_timeout);
|
|
schedule_delayed_work(&osdc->osds_timeout_work,
|
|
round_jiffies_relative(osdc->client->options->osd_idle_ttl));
|
|
|
|
return 0;
|
|
|
|
out_msgpool_reply:
|
|
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
|
|
out_msgpool:
|
|
ceph_msgpool_destroy(&osdc->msgpool_op);
|
|
out_mempool:
|
|
mempool_destroy(osdc->req_mempool);
|
|
out_map:
|
|
ceph_osdmap_destroy(osdc->osdmap);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
void ceph_osdc_stop(struct ceph_osd_client *osdc)
|
|
{
|
|
flush_workqueue(osdc->notify_wq);
|
|
destroy_workqueue(osdc->notify_wq);
|
|
cancel_delayed_work_sync(&osdc->timeout_work);
|
|
cancel_delayed_work_sync(&osdc->osds_timeout_work);
|
|
|
|
down_write(&osdc->lock);
|
|
while (!RB_EMPTY_ROOT(&osdc->osds)) {
|
|
struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds),
|
|
struct ceph_osd, o_node);
|
|
close_osd(osd);
|
|
}
|
|
up_write(&osdc->lock);
|
|
WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1);
|
|
osd_cleanup(&osdc->homeless_osd);
|
|
|
|
WARN_ON(!list_empty(&osdc->osd_lru));
|
|
WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests));
|
|
WARN_ON(!RB_EMPTY_ROOT(&osdc->map_checks));
|
|
WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_map_checks));
|
|
WARN_ON(atomic_read(&osdc->num_requests));
|
|
WARN_ON(atomic_read(&osdc->num_homeless));
|
|
|
|
ceph_osdmap_destroy(osdc->osdmap);
|
|
mempool_destroy(osdc->req_mempool);
|
|
ceph_msgpool_destroy(&osdc->msgpool_op);
|
|
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
|
|
}
|
|
|
|
/*
|
|
* Read some contiguous pages. If we cross a stripe boundary, shorten
|
|
* *plen. Return number of bytes read, or error.
|
|
*/
|
|
int ceph_osdc_readpages(struct ceph_osd_client *osdc,
|
|
struct ceph_vino vino, struct ceph_file_layout *layout,
|
|
u64 off, u64 *plen,
|
|
u32 truncate_seq, u64 truncate_size,
|
|
struct page **pages, int num_pages, int page_align)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
int rc = 0;
|
|
|
|
dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino,
|
|
vino.snap, off, *plen);
|
|
req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1,
|
|
CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
|
|
NULL, truncate_seq, truncate_size,
|
|
false);
|
|
if (IS_ERR(req))
|
|
return PTR_ERR(req);
|
|
|
|
/* it may be a short read due to an object boundary */
|
|
osd_req_op_extent_osd_data_pages(req, 0,
|
|
pages, *plen, page_align, false, false);
|
|
|
|
dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
|
|
off, *plen, *plen, page_align);
|
|
|
|
rc = ceph_osdc_start_request(osdc, req, false);
|
|
if (!rc)
|
|
rc = ceph_osdc_wait_request(osdc, req);
|
|
|
|
ceph_osdc_put_request(req);
|
|
dout("readpages result %d\n", rc);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_readpages);
|
|
|
|
/*
|
|
* do a synchronous write on N pages
|
|
*/
|
|
int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
|
|
struct ceph_file_layout *layout,
|
|
struct ceph_snap_context *snapc,
|
|
u64 off, u64 len,
|
|
u32 truncate_seq, u64 truncate_size,
|
|
struct timespec *mtime,
|
|
struct page **pages, int num_pages)
|
|
{
|
|
struct ceph_osd_request *req;
|
|
int rc = 0;
|
|
int page_align = off & ~PAGE_MASK;
|
|
|
|
req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1,
|
|
CEPH_OSD_OP_WRITE,
|
|
CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
|
|
snapc, truncate_seq, truncate_size,
|
|
true);
|
|
if (IS_ERR(req))
|
|
return PTR_ERR(req);
|
|
|
|
/* it may be a short write due to an object boundary */
|
|
osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align,
|
|
false, false);
|
|
dout("writepages %llu~%llu (%llu bytes)\n", off, len, len);
|
|
|
|
req->r_mtime = *mtime;
|
|
rc = ceph_osdc_start_request(osdc, req, true);
|
|
if (!rc)
|
|
rc = ceph_osdc_wait_request(osdc, req);
|
|
|
|
ceph_osdc_put_request(req);
|
|
if (rc == 0)
|
|
rc = len;
|
|
dout("writepages result %d\n", rc);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_writepages);
|
|
|
|
int ceph_osdc_setup(void)
|
|
{
|
|
size_t size = sizeof(struct ceph_osd_request) +
|
|
CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op);
|
|
|
|
BUG_ON(ceph_osd_request_cache);
|
|
ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size,
|
|
0, 0, NULL);
|
|
|
|
return ceph_osd_request_cache ? 0 : -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_setup);
|
|
|
|
void ceph_osdc_cleanup(void)
|
|
{
|
|
BUG_ON(!ceph_osd_request_cache);
|
|
kmem_cache_destroy(ceph_osd_request_cache);
|
|
ceph_osd_request_cache = NULL;
|
|
}
|
|
EXPORT_SYMBOL(ceph_osdc_cleanup);
|
|
|
|
/*
|
|
* handle incoming message
|
|
*/
|
|
static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
|
|
{
|
|
struct ceph_osd *osd = con->private;
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
int type = le16_to_cpu(msg->hdr.type);
|
|
|
|
switch (type) {
|
|
case CEPH_MSG_OSD_MAP:
|
|
ceph_osdc_handle_map(osdc, msg);
|
|
break;
|
|
case CEPH_MSG_OSD_OPREPLY:
|
|
handle_reply(osd, msg);
|
|
break;
|
|
case CEPH_MSG_WATCH_NOTIFY:
|
|
handle_watch_notify(osdc, msg);
|
|
break;
|
|
|
|
default:
|
|
pr_err("received unknown message type %d %s\n", type,
|
|
ceph_msg_type_name(type));
|
|
}
|
|
|
|
ceph_msg_put(msg);
|
|
}
|
|
|
|
/*
|
|
* Lookup and return message for incoming reply. Don't try to do
|
|
* anything about a larger than preallocated data portion of the
|
|
* message at the moment - for now, just skip the message.
|
|
*/
|
|
static struct ceph_msg *get_reply(struct ceph_connection *con,
|
|
struct ceph_msg_header *hdr,
|
|
int *skip)
|
|
{
|
|
struct ceph_osd *osd = con->private;
|
|
struct ceph_osd_client *osdc = osd->o_osdc;
|
|
struct ceph_msg *m = NULL;
|
|
struct ceph_osd_request *req;
|
|
int front_len = le32_to_cpu(hdr->front_len);
|
|
int data_len = le32_to_cpu(hdr->data_len);
|
|
u64 tid = le64_to_cpu(hdr->tid);
|
|
|
|
down_read(&osdc->lock);
|
|
if (!osd_registered(osd)) {
|
|
dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd);
|
|
*skip = 1;
|
|
goto out_unlock_osdc;
|
|
}
|
|
WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num));
|
|
|
|
mutex_lock(&osd->lock);
|
|
req = lookup_request(&osd->o_requests, tid);
|
|
if (!req) {
|
|
dout("%s osd%d tid %llu unknown, skipping\n", __func__,
|
|
osd->o_osd, tid);
|
|
*skip = 1;
|
|
goto out_unlock_session;
|
|
}
|
|
|
|
ceph_msg_revoke_incoming(req->r_reply);
|
|
|
|
if (front_len > req->r_reply->front_alloc_len) {
|
|
pr_warn("%s osd%d tid %llu front %d > preallocated %d\n",
|
|
__func__, osd->o_osd, req->r_tid, front_len,
|
|
req->r_reply->front_alloc_len);
|
|
m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS,
|
|
false);
|
|
if (!m)
|
|
goto out_unlock_session;
|
|
ceph_msg_put(req->r_reply);
|
|
req->r_reply = m;
|
|
}
|
|
|
|
if (data_len > req->r_reply->data_length) {
|
|
pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n",
|
|
__func__, osd->o_osd, req->r_tid, data_len,
|
|
req->r_reply->data_length);
|
|
m = NULL;
|
|
*skip = 1;
|
|
goto out_unlock_session;
|
|
}
|
|
|
|
m = ceph_msg_get(req->r_reply);
|
|
dout("get_reply tid %lld %p\n", tid, m);
|
|
|
|
out_unlock_session:
|
|
mutex_unlock(&osd->lock);
|
|
out_unlock_osdc:
|
|
up_read(&osdc->lock);
|
|
return m;
|
|
}
|
|
|
|
/*
|
|
* TODO: switch to a msg-owned pagelist
|
|
*/
|
|
static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr)
|
|
{
|
|
struct ceph_msg *m;
|
|
int type = le16_to_cpu(hdr->type);
|
|
u32 front_len = le32_to_cpu(hdr->front_len);
|
|
u32 data_len = le32_to_cpu(hdr->data_len);
|
|
|
|
m = ceph_msg_new(type, front_len, GFP_NOIO, false);
|
|
if (!m)
|
|
return NULL;
|
|
|
|
if (data_len) {
|
|
struct page **pages;
|
|
struct ceph_osd_data osd_data;
|
|
|
|
pages = ceph_alloc_page_vector(calc_pages_for(0, data_len),
|
|
GFP_NOIO);
|
|
if (IS_ERR(pages)) {
|
|
ceph_msg_put(m);
|
|
return NULL;
|
|
}
|
|
|
|
ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false,
|
|
false);
|
|
ceph_osdc_msg_data_add(m, &osd_data);
|
|
}
|
|
|
|
return m;
|
|
}
|
|
|
|
static struct ceph_msg *alloc_msg(struct ceph_connection *con,
|
|
struct ceph_msg_header *hdr,
|
|
int *skip)
|
|
{
|
|
struct ceph_osd *osd = con->private;
|
|
int type = le16_to_cpu(hdr->type);
|
|
|
|
*skip = 0;
|
|
switch (type) {
|
|
case CEPH_MSG_OSD_MAP:
|
|
case CEPH_MSG_WATCH_NOTIFY:
|
|
return alloc_msg_with_page_vector(hdr);
|
|
case CEPH_MSG_OSD_OPREPLY:
|
|
return get_reply(con, hdr, skip);
|
|
default:
|
|
pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__,
|
|
osd->o_osd, type);
|
|
*skip = 1;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Wrappers to refcount containing ceph_osd struct
|
|
*/
|
|
static struct ceph_connection *get_osd_con(struct ceph_connection *con)
|
|
{
|
|
struct ceph_osd *osd = con->private;
|
|
if (get_osd(osd))
|
|
return con;
|
|
return NULL;
|
|
}
|
|
|
|
static void put_osd_con(struct ceph_connection *con)
|
|
{
|
|
struct ceph_osd *osd = con->private;
|
|
put_osd(osd);
|
|
}
|
|
|
|
/*
|
|
* authentication
|
|
*/
|
|
/*
|
|
* Note: returned pointer is the address of a structure that's
|
|
* managed separately. Caller must *not* attempt to free it.
|
|
*/
|
|
static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
|
|
int *proto, int force_new)
|
|
{
|
|
struct ceph_osd *o = con->private;
|
|
struct ceph_osd_client *osdc = o->o_osdc;
|
|
struct ceph_auth_client *ac = osdc->client->monc.auth;
|
|
struct ceph_auth_handshake *auth = &o->o_auth;
|
|
|
|
if (force_new && auth->authorizer) {
|
|
ceph_auth_destroy_authorizer(auth->authorizer);
|
|
auth->authorizer = NULL;
|
|
}
|
|
if (!auth->authorizer) {
|
|
int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
|
|
auth);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
} else {
|
|
int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
|
|
auth);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
}
|
|
*proto = ac->protocol;
|
|
|
|
return auth;
|
|
}
|
|
|
|
|
|
static int verify_authorizer_reply(struct ceph_connection *con)
|
|
{
|
|
struct ceph_osd *o = con->private;
|
|
struct ceph_osd_client *osdc = o->o_osdc;
|
|
struct ceph_auth_client *ac = osdc->client->monc.auth;
|
|
|
|
return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer);
|
|
}
|
|
|
|
static int invalidate_authorizer(struct ceph_connection *con)
|
|
{
|
|
struct ceph_osd *o = con->private;
|
|
struct ceph_osd_client *osdc = o->o_osdc;
|
|
struct ceph_auth_client *ac = osdc->client->monc.auth;
|
|
|
|
ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD);
|
|
return ceph_monc_validate_auth(&osdc->client->monc);
|
|
}
|
|
|
|
static int osd_sign_message(struct ceph_msg *msg)
|
|
{
|
|
struct ceph_osd *o = msg->con->private;
|
|
struct ceph_auth_handshake *auth = &o->o_auth;
|
|
|
|
return ceph_auth_sign_message(auth, msg);
|
|
}
|
|
|
|
static int osd_check_message_signature(struct ceph_msg *msg)
|
|
{
|
|
struct ceph_osd *o = msg->con->private;
|
|
struct ceph_auth_handshake *auth = &o->o_auth;
|
|
|
|
return ceph_auth_check_message_signature(auth, msg);
|
|
}
|
|
|
|
static const struct ceph_connection_operations osd_con_ops = {
|
|
.get = get_osd_con,
|
|
.put = put_osd_con,
|
|
.dispatch = dispatch,
|
|
.get_authorizer = get_authorizer,
|
|
.verify_authorizer_reply = verify_authorizer_reply,
|
|
.invalidate_authorizer = invalidate_authorizer,
|
|
.alloc_msg = alloc_msg,
|
|
.sign_message = osd_sign_message,
|
|
.check_message_signature = osd_check_message_signature,
|
|
.fault = osd_fault,
|
|
};
|