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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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964f14a0d3
clean up some unused functions and parameters. Link: http://lkml.kernel.org/r/598A5E21.2080807@huawei.com Signed-off-by: Jun Piao <piaojun@huawei.com> Reviewed-by: Alex Chen <alex.chen@huawei.com> Cc: Mark Fasheh <mfasheh@versity.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <jiangqi903@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2361 lines
61 KiB
C
2361 lines
61 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* journal.c
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*
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* Defines functions of journalling api
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*
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* Copyright (C) 2003, 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <linux/fs.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/highmem.h>
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#include <linux/kthread.h>
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#include <linux/time.h>
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#include <linux/random.h>
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#include <linux/delay.h>
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#include <cluster/masklog.h>
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#include "ocfs2.h"
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#include "alloc.h"
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#include "blockcheck.h"
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#include "dir.h"
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#include "dlmglue.h"
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#include "extent_map.h"
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#include "heartbeat.h"
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#include "inode.h"
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#include "journal.h"
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#include "localalloc.h"
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#include "slot_map.h"
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#include "super.h"
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#include "sysfile.h"
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#include "uptodate.h"
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#include "quota.h"
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#include "file.h"
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#include "namei.h"
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#include "buffer_head_io.h"
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#include "ocfs2_trace.h"
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DEFINE_SPINLOCK(trans_inc_lock);
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#define ORPHAN_SCAN_SCHEDULE_TIMEOUT 300000
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static int ocfs2_force_read_journal(struct inode *inode);
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static int ocfs2_recover_node(struct ocfs2_super *osb,
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int node_num, int slot_num);
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static int __ocfs2_recovery_thread(void *arg);
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static int ocfs2_commit_cache(struct ocfs2_super *osb);
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static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota);
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static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
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int dirty, int replayed);
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static int ocfs2_trylock_journal(struct ocfs2_super *osb,
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int slot_num);
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static int ocfs2_recover_orphans(struct ocfs2_super *osb,
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int slot,
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enum ocfs2_orphan_reco_type orphan_reco_type);
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static int ocfs2_commit_thread(void *arg);
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static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
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int slot_num,
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struct ocfs2_dinode *la_dinode,
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struct ocfs2_dinode *tl_dinode,
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struct ocfs2_quota_recovery *qrec,
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enum ocfs2_orphan_reco_type orphan_reco_type);
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static inline int ocfs2_wait_on_mount(struct ocfs2_super *osb)
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{
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return __ocfs2_wait_on_mount(osb, 0);
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}
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static inline int ocfs2_wait_on_quotas(struct ocfs2_super *osb)
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{
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return __ocfs2_wait_on_mount(osb, 1);
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}
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/*
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* This replay_map is to track online/offline slots, so we could recover
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* offline slots during recovery and mount
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*/
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enum ocfs2_replay_state {
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REPLAY_UNNEEDED = 0, /* Replay is not needed, so ignore this map */
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REPLAY_NEEDED, /* Replay slots marked in rm_replay_slots */
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REPLAY_DONE /* Replay was already queued */
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};
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struct ocfs2_replay_map {
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unsigned int rm_slots;
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enum ocfs2_replay_state rm_state;
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unsigned char rm_replay_slots[0];
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};
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static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state)
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{
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if (!osb->replay_map)
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return;
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/* If we've already queued the replay, we don't have any more to do */
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if (osb->replay_map->rm_state == REPLAY_DONE)
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return;
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osb->replay_map->rm_state = state;
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}
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int ocfs2_compute_replay_slots(struct ocfs2_super *osb)
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{
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struct ocfs2_replay_map *replay_map;
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int i, node_num;
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/* If replay map is already set, we don't do it again */
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if (osb->replay_map)
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return 0;
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replay_map = kzalloc(sizeof(struct ocfs2_replay_map) +
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(osb->max_slots * sizeof(char)), GFP_KERNEL);
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if (!replay_map) {
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mlog_errno(-ENOMEM);
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return -ENOMEM;
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}
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spin_lock(&osb->osb_lock);
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replay_map->rm_slots = osb->max_slots;
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replay_map->rm_state = REPLAY_UNNEEDED;
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/* set rm_replay_slots for offline slot(s) */
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for (i = 0; i < replay_map->rm_slots; i++) {
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if (ocfs2_slot_to_node_num_locked(osb, i, &node_num) == -ENOENT)
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replay_map->rm_replay_slots[i] = 1;
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}
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osb->replay_map = replay_map;
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spin_unlock(&osb->osb_lock);
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return 0;
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}
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static void ocfs2_queue_replay_slots(struct ocfs2_super *osb,
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enum ocfs2_orphan_reco_type orphan_reco_type)
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{
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struct ocfs2_replay_map *replay_map = osb->replay_map;
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int i;
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if (!replay_map)
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return;
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if (replay_map->rm_state != REPLAY_NEEDED)
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return;
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for (i = 0; i < replay_map->rm_slots; i++)
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if (replay_map->rm_replay_slots[i])
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ocfs2_queue_recovery_completion(osb->journal, i, NULL,
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NULL, NULL,
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orphan_reco_type);
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replay_map->rm_state = REPLAY_DONE;
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}
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static void ocfs2_free_replay_slots(struct ocfs2_super *osb)
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{
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struct ocfs2_replay_map *replay_map = osb->replay_map;
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if (!osb->replay_map)
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return;
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kfree(replay_map);
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osb->replay_map = NULL;
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}
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int ocfs2_recovery_init(struct ocfs2_super *osb)
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{
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struct ocfs2_recovery_map *rm;
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mutex_init(&osb->recovery_lock);
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osb->disable_recovery = 0;
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osb->recovery_thread_task = NULL;
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init_waitqueue_head(&osb->recovery_event);
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rm = kzalloc(sizeof(struct ocfs2_recovery_map) +
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osb->max_slots * sizeof(unsigned int),
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GFP_KERNEL);
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if (!rm) {
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mlog_errno(-ENOMEM);
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return -ENOMEM;
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}
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rm->rm_entries = (unsigned int *)((char *)rm +
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sizeof(struct ocfs2_recovery_map));
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osb->recovery_map = rm;
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return 0;
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}
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/* we can't grab the goofy sem lock from inside wait_event, so we use
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* memory barriers to make sure that we'll see the null task before
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* being woken up */
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static int ocfs2_recovery_thread_running(struct ocfs2_super *osb)
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{
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mb();
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return osb->recovery_thread_task != NULL;
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}
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void ocfs2_recovery_exit(struct ocfs2_super *osb)
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{
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struct ocfs2_recovery_map *rm;
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/* disable any new recovery threads and wait for any currently
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* running ones to exit. Do this before setting the vol_state. */
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mutex_lock(&osb->recovery_lock);
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osb->disable_recovery = 1;
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mutex_unlock(&osb->recovery_lock);
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wait_event(osb->recovery_event, !ocfs2_recovery_thread_running(osb));
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/* At this point, we know that no more recovery threads can be
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* launched, so wait for any recovery completion work to
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* complete. */
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flush_workqueue(osb->ocfs2_wq);
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/*
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* Now that recovery is shut down, and the osb is about to be
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* freed, the osb_lock is not taken here.
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*/
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rm = osb->recovery_map;
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/* XXX: Should we bug if there are dirty entries? */
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kfree(rm);
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}
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static int __ocfs2_recovery_map_test(struct ocfs2_super *osb,
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unsigned int node_num)
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{
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int i;
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struct ocfs2_recovery_map *rm = osb->recovery_map;
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assert_spin_locked(&osb->osb_lock);
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for (i = 0; i < rm->rm_used; i++) {
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if (rm->rm_entries[i] == node_num)
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return 1;
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}
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return 0;
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}
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/* Behaves like test-and-set. Returns the previous value */
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static int ocfs2_recovery_map_set(struct ocfs2_super *osb,
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unsigned int node_num)
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{
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struct ocfs2_recovery_map *rm = osb->recovery_map;
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spin_lock(&osb->osb_lock);
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if (__ocfs2_recovery_map_test(osb, node_num)) {
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spin_unlock(&osb->osb_lock);
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return 1;
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}
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/* XXX: Can this be exploited? Not from o2dlm... */
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BUG_ON(rm->rm_used >= osb->max_slots);
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rm->rm_entries[rm->rm_used] = node_num;
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rm->rm_used++;
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spin_unlock(&osb->osb_lock);
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return 0;
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}
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static void ocfs2_recovery_map_clear(struct ocfs2_super *osb,
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unsigned int node_num)
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{
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int i;
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struct ocfs2_recovery_map *rm = osb->recovery_map;
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spin_lock(&osb->osb_lock);
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for (i = 0; i < rm->rm_used; i++) {
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if (rm->rm_entries[i] == node_num)
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break;
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}
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if (i < rm->rm_used) {
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/* XXX: be careful with the pointer math */
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memmove(&(rm->rm_entries[i]), &(rm->rm_entries[i + 1]),
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(rm->rm_used - i - 1) * sizeof(unsigned int));
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rm->rm_used--;
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}
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spin_unlock(&osb->osb_lock);
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}
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static int ocfs2_commit_cache(struct ocfs2_super *osb)
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{
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int status = 0;
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unsigned int flushed;
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struct ocfs2_journal *journal = NULL;
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journal = osb->journal;
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/* Flush all pending commits and checkpoint the journal. */
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down_write(&journal->j_trans_barrier);
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flushed = atomic_read(&journal->j_num_trans);
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trace_ocfs2_commit_cache_begin(flushed);
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if (flushed == 0) {
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up_write(&journal->j_trans_barrier);
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goto finally;
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}
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jbd2_journal_lock_updates(journal->j_journal);
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status = jbd2_journal_flush(journal->j_journal);
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jbd2_journal_unlock_updates(journal->j_journal);
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if (status < 0) {
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up_write(&journal->j_trans_barrier);
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mlog_errno(status);
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goto finally;
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}
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ocfs2_inc_trans_id(journal);
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flushed = atomic_read(&journal->j_num_trans);
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atomic_set(&journal->j_num_trans, 0);
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up_write(&journal->j_trans_barrier);
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trace_ocfs2_commit_cache_end(journal->j_trans_id, flushed);
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ocfs2_wake_downconvert_thread(osb);
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wake_up(&journal->j_checkpointed);
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finally:
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return status;
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}
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handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs)
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{
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journal_t *journal = osb->journal->j_journal;
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handle_t *handle;
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BUG_ON(!osb || !osb->journal->j_journal);
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if (ocfs2_is_hard_readonly(osb))
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return ERR_PTR(-EROFS);
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BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE);
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BUG_ON(max_buffs <= 0);
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/* Nested transaction? Just return the handle... */
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if (journal_current_handle())
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return jbd2_journal_start(journal, max_buffs);
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sb_start_intwrite(osb->sb);
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down_read(&osb->journal->j_trans_barrier);
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handle = jbd2_journal_start(journal, max_buffs);
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if (IS_ERR(handle)) {
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up_read(&osb->journal->j_trans_barrier);
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sb_end_intwrite(osb->sb);
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mlog_errno(PTR_ERR(handle));
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if (is_journal_aborted(journal)) {
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ocfs2_abort(osb->sb, "Detected aborted journal\n");
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handle = ERR_PTR(-EROFS);
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}
|
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} else {
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if (!ocfs2_mount_local(osb))
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atomic_inc(&(osb->journal->j_num_trans));
|
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}
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|
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return handle;
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}
|
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|
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int ocfs2_commit_trans(struct ocfs2_super *osb,
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handle_t *handle)
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{
|
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int ret, nested;
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struct ocfs2_journal *journal = osb->journal;
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|
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BUG_ON(!handle);
|
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|
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nested = handle->h_ref > 1;
|
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ret = jbd2_journal_stop(handle);
|
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if (ret < 0)
|
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mlog_errno(ret);
|
|
|
|
if (!nested) {
|
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up_read(&journal->j_trans_barrier);
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sb_end_intwrite(osb->sb);
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}
|
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|
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return ret;
|
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}
|
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|
|
/*
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* 'nblocks' is what you want to add to the current transaction.
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*
|
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* This might call jbd2_journal_restart() which will commit dirty buffers
|
|
* and then restart the transaction. Before calling
|
|
* ocfs2_extend_trans(), any changed blocks should have been
|
|
* dirtied. After calling it, all blocks which need to be changed must
|
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* go through another set of journal_access/journal_dirty calls.
|
|
*
|
|
* WARNING: This will not release any semaphores or disk locks taken
|
|
* during the transaction, so make sure they were taken *before*
|
|
* start_trans or we'll have ordering deadlocks.
|
|
*
|
|
* WARNING2: Note that we do *not* drop j_trans_barrier here. This is
|
|
* good because transaction ids haven't yet been recorded on the
|
|
* cluster locks associated with this handle.
|
|
*/
|
|
int ocfs2_extend_trans(handle_t *handle, int nblocks)
|
|
{
|
|
int status, old_nblocks;
|
|
|
|
BUG_ON(!handle);
|
|
BUG_ON(nblocks < 0);
|
|
|
|
if (!nblocks)
|
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return 0;
|
|
|
|
old_nblocks = handle->h_buffer_credits;
|
|
|
|
trace_ocfs2_extend_trans(old_nblocks, nblocks);
|
|
|
|
#ifdef CONFIG_OCFS2_DEBUG_FS
|
|
status = 1;
|
|
#else
|
|
status = jbd2_journal_extend(handle, nblocks);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
#endif
|
|
|
|
if (status > 0) {
|
|
trace_ocfs2_extend_trans_restart(old_nblocks + nblocks);
|
|
status = jbd2_journal_restart(handle,
|
|
old_nblocks + nblocks);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
status = 0;
|
|
bail:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* If we have fewer than thresh credits, extend by OCFS2_MAX_TRANS_DATA.
|
|
* If that fails, restart the transaction & regain write access for the
|
|
* buffer head which is used for metadata modifications.
|
|
* Taken from Ext4: extend_or_restart_transaction()
|
|
*/
|
|
int ocfs2_allocate_extend_trans(handle_t *handle, int thresh)
|
|
{
|
|
int status, old_nblks;
|
|
|
|
BUG_ON(!handle);
|
|
|
|
old_nblks = handle->h_buffer_credits;
|
|
trace_ocfs2_allocate_extend_trans(old_nblks, thresh);
|
|
|
|
if (old_nblks < thresh)
|
|
return 0;
|
|
|
|
status = jbd2_journal_extend(handle, OCFS2_MAX_TRANS_DATA);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
if (status > 0) {
|
|
status = jbd2_journal_restart(handle, OCFS2_MAX_TRANS_DATA);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
}
|
|
|
|
bail:
|
|
return status;
|
|
}
|
|
|
|
|
|
struct ocfs2_triggers {
|
|
struct jbd2_buffer_trigger_type ot_triggers;
|
|
int ot_offset;
|
|
};
|
|
|
|
static inline struct ocfs2_triggers *to_ocfs2_trigger(struct jbd2_buffer_trigger_type *triggers)
|
|
{
|
|
return container_of(triggers, struct ocfs2_triggers, ot_triggers);
|
|
}
|
|
|
|
static void ocfs2_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
|
|
struct buffer_head *bh,
|
|
void *data, size_t size)
|
|
{
|
|
struct ocfs2_triggers *ot = to_ocfs2_trigger(triggers);
|
|
|
|
/*
|
|
* We aren't guaranteed to have the superblock here, so we
|
|
* must unconditionally compute the ecc data.
|
|
* __ocfs2_journal_access() will only set the triggers if
|
|
* metaecc is enabled.
|
|
*/
|
|
ocfs2_block_check_compute(data, size, data + ot->ot_offset);
|
|
}
|
|
|
|
/*
|
|
* Quota blocks have their own trigger because the struct ocfs2_block_check
|
|
* offset depends on the blocksize.
|
|
*/
|
|
static void ocfs2_dq_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
|
|
struct buffer_head *bh,
|
|
void *data, size_t size)
|
|
{
|
|
struct ocfs2_disk_dqtrailer *dqt =
|
|
ocfs2_block_dqtrailer(size, data);
|
|
|
|
/*
|
|
* We aren't guaranteed to have the superblock here, so we
|
|
* must unconditionally compute the ecc data.
|
|
* __ocfs2_journal_access() will only set the triggers if
|
|
* metaecc is enabled.
|
|
*/
|
|
ocfs2_block_check_compute(data, size, &dqt->dq_check);
|
|
}
|
|
|
|
/*
|
|
* Directory blocks also have their own trigger because the
|
|
* struct ocfs2_block_check offset depends on the blocksize.
|
|
*/
|
|
static void ocfs2_db_frozen_trigger(struct jbd2_buffer_trigger_type *triggers,
|
|
struct buffer_head *bh,
|
|
void *data, size_t size)
|
|
{
|
|
struct ocfs2_dir_block_trailer *trailer =
|
|
ocfs2_dir_trailer_from_size(size, data);
|
|
|
|
/*
|
|
* We aren't guaranteed to have the superblock here, so we
|
|
* must unconditionally compute the ecc data.
|
|
* __ocfs2_journal_access() will only set the triggers if
|
|
* metaecc is enabled.
|
|
*/
|
|
ocfs2_block_check_compute(data, size, &trailer->db_check);
|
|
}
|
|
|
|
static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers,
|
|
struct buffer_head *bh)
|
|
{
|
|
mlog(ML_ERROR,
|
|
"ocfs2_abort_trigger called by JBD2. bh = 0x%lx, "
|
|
"bh->b_blocknr = %llu\n",
|
|
(unsigned long)bh,
|
|
(unsigned long long)bh->b_blocknr);
|
|
|
|
ocfs2_error(bh->b_bdev->bd_super,
|
|
"JBD2 has aborted our journal, ocfs2 cannot continue\n");
|
|
}
|
|
|
|
static struct ocfs2_triggers di_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_dinode, i_check),
|
|
};
|
|
|
|
static struct ocfs2_triggers eb_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_extent_block, h_check),
|
|
};
|
|
|
|
static struct ocfs2_triggers rb_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_refcount_block, rf_check),
|
|
};
|
|
|
|
static struct ocfs2_triggers gd_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_group_desc, bg_check),
|
|
};
|
|
|
|
static struct ocfs2_triggers db_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_db_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
};
|
|
|
|
static struct ocfs2_triggers xb_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_xattr_block, xb_check),
|
|
};
|
|
|
|
static struct ocfs2_triggers dq_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_dq_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
};
|
|
|
|
static struct ocfs2_triggers dr_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_dx_root_block, dr_check),
|
|
};
|
|
|
|
static struct ocfs2_triggers dl_triggers = {
|
|
.ot_triggers = {
|
|
.t_frozen = ocfs2_frozen_trigger,
|
|
.t_abort = ocfs2_abort_trigger,
|
|
},
|
|
.ot_offset = offsetof(struct ocfs2_dx_leaf, dl_check),
|
|
};
|
|
|
|
static int __ocfs2_journal_access(handle_t *handle,
|
|
struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh,
|
|
struct ocfs2_triggers *triggers,
|
|
int type)
|
|
{
|
|
int status;
|
|
struct ocfs2_super *osb =
|
|
OCFS2_SB(ocfs2_metadata_cache_get_super(ci));
|
|
|
|
BUG_ON(!ci || !ci->ci_ops);
|
|
BUG_ON(!handle);
|
|
BUG_ON(!bh);
|
|
|
|
trace_ocfs2_journal_access(
|
|
(unsigned long long)ocfs2_metadata_cache_owner(ci),
|
|
(unsigned long long)bh->b_blocknr, type, bh->b_size);
|
|
|
|
/* we can safely remove this assertion after testing. */
|
|
if (!buffer_uptodate(bh)) {
|
|
mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n");
|
|
mlog(ML_ERROR, "b_blocknr=%llu\n",
|
|
(unsigned long long)bh->b_blocknr);
|
|
|
|
lock_buffer(bh);
|
|
/*
|
|
* A previous attempt to write this buffer head failed.
|
|
* Nothing we can do but to retry the write and hope for
|
|
* the best.
|
|
*/
|
|
if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) {
|
|
clear_buffer_write_io_error(bh);
|
|
set_buffer_uptodate(bh);
|
|
}
|
|
|
|
if (!buffer_uptodate(bh)) {
|
|
unlock_buffer(bh);
|
|
return -EIO;
|
|
}
|
|
unlock_buffer(bh);
|
|
}
|
|
|
|
/* Set the current transaction information on the ci so
|
|
* that the locking code knows whether it can drop it's locks
|
|
* on this ci or not. We're protected from the commit
|
|
* thread updating the current transaction id until
|
|
* ocfs2_commit_trans() because ocfs2_start_trans() took
|
|
* j_trans_barrier for us. */
|
|
ocfs2_set_ci_lock_trans(osb->journal, ci);
|
|
|
|
ocfs2_metadata_cache_io_lock(ci);
|
|
switch (type) {
|
|
case OCFS2_JOURNAL_ACCESS_CREATE:
|
|
case OCFS2_JOURNAL_ACCESS_WRITE:
|
|
status = jbd2_journal_get_write_access(handle, bh);
|
|
break;
|
|
|
|
case OCFS2_JOURNAL_ACCESS_UNDO:
|
|
status = jbd2_journal_get_undo_access(handle, bh);
|
|
break;
|
|
|
|
default:
|
|
status = -EINVAL;
|
|
mlog(ML_ERROR, "Unknown access type!\n");
|
|
}
|
|
if (!status && ocfs2_meta_ecc(osb) && triggers)
|
|
jbd2_journal_set_triggers(bh, &triggers->ot_triggers);
|
|
ocfs2_metadata_cache_io_unlock(ci);
|
|
|
|
if (status < 0)
|
|
mlog(ML_ERROR, "Error %d getting %d access to buffer!\n",
|
|
status, type);
|
|
|
|
return status;
|
|
}
|
|
|
|
int ocfs2_journal_access_di(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &di_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_eb(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &eb_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_rb(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &rb_triggers,
|
|
type);
|
|
}
|
|
|
|
int ocfs2_journal_access_gd(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &gd_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_db(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &db_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_xb(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &xb_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_dq(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &dq_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_dr(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &dr_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access_dl(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, &dl_triggers, type);
|
|
}
|
|
|
|
int ocfs2_journal_access(handle_t *handle, struct ocfs2_caching_info *ci,
|
|
struct buffer_head *bh, int type)
|
|
{
|
|
return __ocfs2_journal_access(handle, ci, bh, NULL, type);
|
|
}
|
|
|
|
void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh)
|
|
{
|
|
int status;
|
|
|
|
trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr);
|
|
|
|
status = jbd2_journal_dirty_metadata(handle, bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
if (!is_handle_aborted(handle)) {
|
|
journal_t *journal = handle->h_transaction->t_journal;
|
|
struct super_block *sb = bh->b_bdev->bd_super;
|
|
|
|
mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. "
|
|
"Aborting transaction and journal.\n");
|
|
handle->h_err = status;
|
|
jbd2_journal_abort_handle(handle);
|
|
jbd2_journal_abort(journal, status);
|
|
ocfs2_abort(sb, "Journal already aborted.\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
|
|
|
|
void ocfs2_set_journal_params(struct ocfs2_super *osb)
|
|
{
|
|
journal_t *journal = osb->journal->j_journal;
|
|
unsigned long commit_interval = OCFS2_DEFAULT_COMMIT_INTERVAL;
|
|
|
|
if (osb->osb_commit_interval)
|
|
commit_interval = osb->osb_commit_interval;
|
|
|
|
write_lock(&journal->j_state_lock);
|
|
journal->j_commit_interval = commit_interval;
|
|
if (osb->s_mount_opt & OCFS2_MOUNT_BARRIER)
|
|
journal->j_flags |= JBD2_BARRIER;
|
|
else
|
|
journal->j_flags &= ~JBD2_BARRIER;
|
|
write_unlock(&journal->j_state_lock);
|
|
}
|
|
|
|
int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty)
|
|
{
|
|
int status = -1;
|
|
struct inode *inode = NULL; /* the journal inode */
|
|
journal_t *j_journal = NULL;
|
|
struct ocfs2_dinode *di = NULL;
|
|
struct buffer_head *bh = NULL;
|
|
struct ocfs2_super *osb;
|
|
int inode_lock = 0;
|
|
|
|
BUG_ON(!journal);
|
|
|
|
osb = journal->j_osb;
|
|
|
|
/* already have the inode for our journal */
|
|
inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
|
|
osb->slot_num);
|
|
if (inode == NULL) {
|
|
status = -EACCES;
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
if (is_bad_inode(inode)) {
|
|
mlog(ML_ERROR, "access error (bad inode)\n");
|
|
iput(inode);
|
|
inode = NULL;
|
|
status = -EACCES;
|
|
goto done;
|
|
}
|
|
|
|
SET_INODE_JOURNAL(inode);
|
|
OCFS2_I(inode)->ip_open_count++;
|
|
|
|
/* Skip recovery waits here - journal inode metadata never
|
|
* changes in a live cluster so it can be considered an
|
|
* exception to the rule. */
|
|
status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
|
|
if (status < 0) {
|
|
if (status != -ERESTARTSYS)
|
|
mlog(ML_ERROR, "Could not get lock on journal!\n");
|
|
goto done;
|
|
}
|
|
|
|
inode_lock = 1;
|
|
di = (struct ocfs2_dinode *)bh->b_data;
|
|
|
|
if (i_size_read(inode) < OCFS2_MIN_JOURNAL_SIZE) {
|
|
mlog(ML_ERROR, "Journal file size (%lld) is too small!\n",
|
|
i_size_read(inode));
|
|
status = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
trace_ocfs2_journal_init(i_size_read(inode),
|
|
(unsigned long long)inode->i_blocks,
|
|
OCFS2_I(inode)->ip_clusters);
|
|
|
|
/* call the kernels journal init function now */
|
|
j_journal = jbd2_journal_init_inode(inode);
|
|
if (j_journal == NULL) {
|
|
mlog(ML_ERROR, "Linux journal layer error\n");
|
|
status = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
trace_ocfs2_journal_init_maxlen(j_journal->j_maxlen);
|
|
|
|
*dirty = (le32_to_cpu(di->id1.journal1.ij_flags) &
|
|
OCFS2_JOURNAL_DIRTY_FL);
|
|
|
|
journal->j_journal = j_journal;
|
|
journal->j_inode = inode;
|
|
journal->j_bh = bh;
|
|
|
|
ocfs2_set_journal_params(osb);
|
|
|
|
journal->j_state = OCFS2_JOURNAL_LOADED;
|
|
|
|
status = 0;
|
|
done:
|
|
if (status < 0) {
|
|
if (inode_lock)
|
|
ocfs2_inode_unlock(inode, 1);
|
|
brelse(bh);
|
|
if (inode) {
|
|
OCFS2_I(inode)->ip_open_count--;
|
|
iput(inode);
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
static void ocfs2_bump_recovery_generation(struct ocfs2_dinode *di)
|
|
{
|
|
le32_add_cpu(&(di->id1.journal1.ij_recovery_generation), 1);
|
|
}
|
|
|
|
static u32 ocfs2_get_recovery_generation(struct ocfs2_dinode *di)
|
|
{
|
|
return le32_to_cpu(di->id1.journal1.ij_recovery_generation);
|
|
}
|
|
|
|
static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,
|
|
int dirty, int replayed)
|
|
{
|
|
int status;
|
|
unsigned int flags;
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
struct buffer_head *bh = journal->j_bh;
|
|
struct ocfs2_dinode *fe;
|
|
|
|
fe = (struct ocfs2_dinode *)bh->b_data;
|
|
|
|
/* The journal bh on the osb always comes from ocfs2_journal_init()
|
|
* and was validated there inside ocfs2_inode_lock_full(). It's a
|
|
* code bug if we mess it up. */
|
|
BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
|
|
|
|
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
|
|
if (dirty)
|
|
flags |= OCFS2_JOURNAL_DIRTY_FL;
|
|
else
|
|
flags &= ~OCFS2_JOURNAL_DIRTY_FL;
|
|
fe->id1.journal1.ij_flags = cpu_to_le32(flags);
|
|
|
|
if (replayed)
|
|
ocfs2_bump_recovery_generation(fe);
|
|
|
|
ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
|
|
status = ocfs2_write_block(osb, bh, INODE_CACHE(journal->j_inode));
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* If the journal has been kmalloc'd it needs to be freed after this
|
|
* call.
|
|
*/
|
|
void ocfs2_journal_shutdown(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_journal *journal = NULL;
|
|
int status = 0;
|
|
struct inode *inode = NULL;
|
|
int num_running_trans = 0;
|
|
|
|
BUG_ON(!osb);
|
|
|
|
journal = osb->journal;
|
|
if (!journal)
|
|
goto done;
|
|
|
|
inode = journal->j_inode;
|
|
|
|
if (journal->j_state != OCFS2_JOURNAL_LOADED)
|
|
goto done;
|
|
|
|
/* need to inc inode use count - jbd2_journal_destroy will iput. */
|
|
if (!igrab(inode))
|
|
BUG();
|
|
|
|
num_running_trans = atomic_read(&(osb->journal->j_num_trans));
|
|
trace_ocfs2_journal_shutdown(num_running_trans);
|
|
|
|
/* Do a commit_cache here. It will flush our journal, *and*
|
|
* release any locks that are still held.
|
|
* set the SHUTDOWN flag and release the trans lock.
|
|
* the commit thread will take the trans lock for us below. */
|
|
journal->j_state = OCFS2_JOURNAL_IN_SHUTDOWN;
|
|
|
|
/* The OCFS2_JOURNAL_IN_SHUTDOWN will signal to commit_cache to not
|
|
* drop the trans_lock (which we want to hold until we
|
|
* completely destroy the journal. */
|
|
if (osb->commit_task) {
|
|
/* Wait for the commit thread */
|
|
trace_ocfs2_journal_shutdown_wait(osb->commit_task);
|
|
kthread_stop(osb->commit_task);
|
|
osb->commit_task = NULL;
|
|
}
|
|
|
|
BUG_ON(atomic_read(&(osb->journal->j_num_trans)) != 0);
|
|
|
|
if (ocfs2_mount_local(osb)) {
|
|
jbd2_journal_lock_updates(journal->j_journal);
|
|
status = jbd2_journal_flush(journal->j_journal);
|
|
jbd2_journal_unlock_updates(journal->j_journal);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
}
|
|
|
|
if (status == 0) {
|
|
/*
|
|
* Do not toggle if flush was unsuccessful otherwise
|
|
* will leave dirty metadata in a "clean" journal
|
|
*/
|
|
status = ocfs2_journal_toggle_dirty(osb, 0, 0);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
}
|
|
|
|
/* Shutdown the kernel journal system */
|
|
jbd2_journal_destroy(journal->j_journal);
|
|
journal->j_journal = NULL;
|
|
|
|
OCFS2_I(inode)->ip_open_count--;
|
|
|
|
/* unlock our journal */
|
|
ocfs2_inode_unlock(inode, 1);
|
|
|
|
brelse(journal->j_bh);
|
|
journal->j_bh = NULL;
|
|
|
|
journal->j_state = OCFS2_JOURNAL_FREE;
|
|
|
|
// up_write(&journal->j_trans_barrier);
|
|
done:
|
|
iput(inode);
|
|
}
|
|
|
|
static void ocfs2_clear_journal_error(struct super_block *sb,
|
|
journal_t *journal,
|
|
int slot)
|
|
{
|
|
int olderr;
|
|
|
|
olderr = jbd2_journal_errno(journal);
|
|
if (olderr) {
|
|
mlog(ML_ERROR, "File system error %d recorded in "
|
|
"journal %u.\n", olderr, slot);
|
|
mlog(ML_ERROR, "File system on device %s needs checking.\n",
|
|
sb->s_id);
|
|
|
|
jbd2_journal_ack_err(journal);
|
|
jbd2_journal_clear_err(journal);
|
|
}
|
|
}
|
|
|
|
int ocfs2_journal_load(struct ocfs2_journal *journal, int local, int replayed)
|
|
{
|
|
int status = 0;
|
|
struct ocfs2_super *osb;
|
|
|
|
BUG_ON(!journal);
|
|
|
|
osb = journal->j_osb;
|
|
|
|
status = jbd2_journal_load(journal->j_journal);
|
|
if (status < 0) {
|
|
mlog(ML_ERROR, "Failed to load journal!\n");
|
|
goto done;
|
|
}
|
|
|
|
ocfs2_clear_journal_error(osb->sb, journal->j_journal, osb->slot_num);
|
|
|
|
status = ocfs2_journal_toggle_dirty(osb, 1, replayed);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
/* Launch the commit thread */
|
|
if (!local) {
|
|
osb->commit_task = kthread_run(ocfs2_commit_thread, osb,
|
|
"ocfs2cmt-%s", osb->uuid_str);
|
|
if (IS_ERR(osb->commit_task)) {
|
|
status = PTR_ERR(osb->commit_task);
|
|
osb->commit_task = NULL;
|
|
mlog(ML_ERROR, "unable to launch ocfs2commit thread, "
|
|
"error=%d", status);
|
|
goto done;
|
|
}
|
|
} else
|
|
osb->commit_task = NULL;
|
|
|
|
done:
|
|
return status;
|
|
}
|
|
|
|
|
|
/* 'full' flag tells us whether we clear out all blocks or if we just
|
|
* mark the journal clean */
|
|
int ocfs2_journal_wipe(struct ocfs2_journal *journal, int full)
|
|
{
|
|
int status;
|
|
|
|
BUG_ON(!journal);
|
|
|
|
status = jbd2_journal_wipe(journal->j_journal, full);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
status = ocfs2_journal_toggle_dirty(journal->j_osb, 0, 0);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
bail:
|
|
return status;
|
|
}
|
|
|
|
static int ocfs2_recovery_completed(struct ocfs2_super *osb)
|
|
{
|
|
int empty;
|
|
struct ocfs2_recovery_map *rm = osb->recovery_map;
|
|
|
|
spin_lock(&osb->osb_lock);
|
|
empty = (rm->rm_used == 0);
|
|
spin_unlock(&osb->osb_lock);
|
|
|
|
return empty;
|
|
}
|
|
|
|
void ocfs2_wait_for_recovery(struct ocfs2_super *osb)
|
|
{
|
|
wait_event(osb->recovery_event, ocfs2_recovery_completed(osb));
|
|
}
|
|
|
|
/*
|
|
* JBD Might read a cached version of another nodes journal file. We
|
|
* don't want this as this file changes often and we get no
|
|
* notification on those changes. The only way to be sure that we've
|
|
* got the most up to date version of those blocks then is to force
|
|
* read them off disk. Just searching through the buffer cache won't
|
|
* work as there may be pages backing this file which are still marked
|
|
* up to date. We know things can't change on this file underneath us
|
|
* as we have the lock by now :)
|
|
*/
|
|
static int ocfs2_force_read_journal(struct inode *inode)
|
|
{
|
|
int status = 0;
|
|
int i;
|
|
u64 v_blkno, p_blkno, p_blocks, num_blocks;
|
|
struct buffer_head *bh = NULL;
|
|
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
|
|
|
|
num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode));
|
|
v_blkno = 0;
|
|
while (v_blkno < num_blocks) {
|
|
status = ocfs2_extent_map_get_blocks(inode, v_blkno,
|
|
&p_blkno, &p_blocks, NULL);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
for (i = 0; i < p_blocks; i++, p_blkno++) {
|
|
bh = __find_get_block(osb->sb->s_bdev, p_blkno,
|
|
osb->sb->s_blocksize);
|
|
/* block not cached. */
|
|
if (!bh)
|
|
continue;
|
|
|
|
brelse(bh);
|
|
bh = NULL;
|
|
/* We are reading journal data which should not
|
|
* be put in the uptodate cache.
|
|
*/
|
|
status = ocfs2_read_blocks_sync(osb, p_blkno, 1, &bh);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
brelse(bh);
|
|
bh = NULL;
|
|
}
|
|
|
|
v_blkno += p_blocks;
|
|
}
|
|
|
|
bail:
|
|
return status;
|
|
}
|
|
|
|
struct ocfs2_la_recovery_item {
|
|
struct list_head lri_list;
|
|
int lri_slot;
|
|
struct ocfs2_dinode *lri_la_dinode;
|
|
struct ocfs2_dinode *lri_tl_dinode;
|
|
struct ocfs2_quota_recovery *lri_qrec;
|
|
enum ocfs2_orphan_reco_type lri_orphan_reco_type;
|
|
};
|
|
|
|
/* Does the second half of the recovery process. By this point, the
|
|
* node is marked clean and can actually be considered recovered,
|
|
* hence it's no longer in the recovery map, but there's still some
|
|
* cleanup we can do which shouldn't happen within the recovery thread
|
|
* as locking in that context becomes very difficult if we are to take
|
|
* recovering nodes into account.
|
|
*
|
|
* NOTE: This function can and will sleep on recovery of other nodes
|
|
* during cluster locking, just like any other ocfs2 process.
|
|
*/
|
|
void ocfs2_complete_recovery(struct work_struct *work)
|
|
{
|
|
int ret = 0;
|
|
struct ocfs2_journal *journal =
|
|
container_of(work, struct ocfs2_journal, j_recovery_work);
|
|
struct ocfs2_super *osb = journal->j_osb;
|
|
struct ocfs2_dinode *la_dinode, *tl_dinode;
|
|
struct ocfs2_la_recovery_item *item, *n;
|
|
struct ocfs2_quota_recovery *qrec;
|
|
enum ocfs2_orphan_reco_type orphan_reco_type;
|
|
LIST_HEAD(tmp_la_list);
|
|
|
|
trace_ocfs2_complete_recovery(
|
|
(unsigned long long)OCFS2_I(journal->j_inode)->ip_blkno);
|
|
|
|
spin_lock(&journal->j_lock);
|
|
list_splice_init(&journal->j_la_cleanups, &tmp_la_list);
|
|
spin_unlock(&journal->j_lock);
|
|
|
|
list_for_each_entry_safe(item, n, &tmp_la_list, lri_list) {
|
|
list_del_init(&item->lri_list);
|
|
|
|
ocfs2_wait_on_quotas(osb);
|
|
|
|
la_dinode = item->lri_la_dinode;
|
|
tl_dinode = item->lri_tl_dinode;
|
|
qrec = item->lri_qrec;
|
|
orphan_reco_type = item->lri_orphan_reco_type;
|
|
|
|
trace_ocfs2_complete_recovery_slot(item->lri_slot,
|
|
la_dinode ? le64_to_cpu(la_dinode->i_blkno) : 0,
|
|
tl_dinode ? le64_to_cpu(tl_dinode->i_blkno) : 0,
|
|
qrec);
|
|
|
|
if (la_dinode) {
|
|
ret = ocfs2_complete_local_alloc_recovery(osb,
|
|
la_dinode);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
|
|
kfree(la_dinode);
|
|
}
|
|
|
|
if (tl_dinode) {
|
|
ret = ocfs2_complete_truncate_log_recovery(osb,
|
|
tl_dinode);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
|
|
kfree(tl_dinode);
|
|
}
|
|
|
|
ret = ocfs2_recover_orphans(osb, item->lri_slot,
|
|
orphan_reco_type);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
|
|
if (qrec) {
|
|
ret = ocfs2_finish_quota_recovery(osb, qrec,
|
|
item->lri_slot);
|
|
if (ret < 0)
|
|
mlog_errno(ret);
|
|
/* Recovery info is already freed now */
|
|
}
|
|
|
|
kfree(item);
|
|
}
|
|
|
|
trace_ocfs2_complete_recovery_end(ret);
|
|
}
|
|
|
|
/* NOTE: This function always eats your references to la_dinode and
|
|
* tl_dinode, either manually on error, or by passing them to
|
|
* ocfs2_complete_recovery */
|
|
static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
|
|
int slot_num,
|
|
struct ocfs2_dinode *la_dinode,
|
|
struct ocfs2_dinode *tl_dinode,
|
|
struct ocfs2_quota_recovery *qrec,
|
|
enum ocfs2_orphan_reco_type orphan_reco_type)
|
|
{
|
|
struct ocfs2_la_recovery_item *item;
|
|
|
|
item = kmalloc(sizeof(struct ocfs2_la_recovery_item), GFP_NOFS);
|
|
if (!item) {
|
|
/* Though we wish to avoid it, we are in fact safe in
|
|
* skipping local alloc cleanup as fsck.ocfs2 is more
|
|
* than capable of reclaiming unused space. */
|
|
kfree(la_dinode);
|
|
kfree(tl_dinode);
|
|
|
|
if (qrec)
|
|
ocfs2_free_quota_recovery(qrec);
|
|
|
|
mlog_errno(-ENOMEM);
|
|
return;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&item->lri_list);
|
|
item->lri_la_dinode = la_dinode;
|
|
item->lri_slot = slot_num;
|
|
item->lri_tl_dinode = tl_dinode;
|
|
item->lri_qrec = qrec;
|
|
item->lri_orphan_reco_type = orphan_reco_type;
|
|
|
|
spin_lock(&journal->j_lock);
|
|
list_add_tail(&item->lri_list, &journal->j_la_cleanups);
|
|
queue_work(journal->j_osb->ocfs2_wq, &journal->j_recovery_work);
|
|
spin_unlock(&journal->j_lock);
|
|
}
|
|
|
|
/* Called by the mount code to queue recovery the last part of
|
|
* recovery for it's own and offline slot(s). */
|
|
void ocfs2_complete_mount_recovery(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
|
|
if (ocfs2_is_hard_readonly(osb))
|
|
return;
|
|
|
|
/* No need to queue up our truncate_log as regular cleanup will catch
|
|
* that */
|
|
ocfs2_queue_recovery_completion(journal, osb->slot_num,
|
|
osb->local_alloc_copy, NULL, NULL,
|
|
ORPHAN_NEED_TRUNCATE);
|
|
ocfs2_schedule_truncate_log_flush(osb, 0);
|
|
|
|
osb->local_alloc_copy = NULL;
|
|
|
|
/* queue to recover orphan slots for all offline slots */
|
|
ocfs2_replay_map_set_state(osb, REPLAY_NEEDED);
|
|
ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE);
|
|
ocfs2_free_replay_slots(osb);
|
|
}
|
|
|
|
void ocfs2_complete_quota_recovery(struct ocfs2_super *osb)
|
|
{
|
|
if (osb->quota_rec) {
|
|
ocfs2_queue_recovery_completion(osb->journal,
|
|
osb->slot_num,
|
|
NULL,
|
|
NULL,
|
|
osb->quota_rec,
|
|
ORPHAN_NEED_TRUNCATE);
|
|
osb->quota_rec = NULL;
|
|
}
|
|
}
|
|
|
|
static int __ocfs2_recovery_thread(void *arg)
|
|
{
|
|
int status, node_num, slot_num;
|
|
struct ocfs2_super *osb = arg;
|
|
struct ocfs2_recovery_map *rm = osb->recovery_map;
|
|
int *rm_quota = NULL;
|
|
int rm_quota_used = 0, i;
|
|
struct ocfs2_quota_recovery *qrec;
|
|
|
|
status = ocfs2_wait_on_mount(osb);
|
|
if (status < 0) {
|
|
goto bail;
|
|
}
|
|
|
|
rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS);
|
|
if (!rm_quota) {
|
|
status = -ENOMEM;
|
|
goto bail;
|
|
}
|
|
restart:
|
|
status = ocfs2_super_lock(osb, 1);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
status = ocfs2_compute_replay_slots(osb);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* queue recovery for our own slot */
|
|
ocfs2_queue_recovery_completion(osb->journal, osb->slot_num, NULL,
|
|
NULL, NULL, ORPHAN_NO_NEED_TRUNCATE);
|
|
|
|
spin_lock(&osb->osb_lock);
|
|
while (rm->rm_used) {
|
|
/* It's always safe to remove entry zero, as we won't
|
|
* clear it until ocfs2_recover_node() has succeeded. */
|
|
node_num = rm->rm_entries[0];
|
|
spin_unlock(&osb->osb_lock);
|
|
slot_num = ocfs2_node_num_to_slot(osb, node_num);
|
|
trace_ocfs2_recovery_thread_node(node_num, slot_num);
|
|
if (slot_num == -ENOENT) {
|
|
status = 0;
|
|
goto skip_recovery;
|
|
}
|
|
|
|
/* It is a bit subtle with quota recovery. We cannot do it
|
|
* immediately because we have to obtain cluster locks from
|
|
* quota files and we also don't want to just skip it because
|
|
* then quota usage would be out of sync until some node takes
|
|
* the slot. So we remember which nodes need quota recovery
|
|
* and when everything else is done, we recover quotas. */
|
|
for (i = 0; i < rm_quota_used && rm_quota[i] != slot_num; i++);
|
|
if (i == rm_quota_used)
|
|
rm_quota[rm_quota_used++] = slot_num;
|
|
|
|
status = ocfs2_recover_node(osb, node_num, slot_num);
|
|
skip_recovery:
|
|
if (!status) {
|
|
ocfs2_recovery_map_clear(osb, node_num);
|
|
} else {
|
|
mlog(ML_ERROR,
|
|
"Error %d recovering node %d on device (%u,%u)!\n",
|
|
status, node_num,
|
|
MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
|
|
mlog(ML_ERROR, "Volume requires unmount.\n");
|
|
}
|
|
|
|
spin_lock(&osb->osb_lock);
|
|
}
|
|
spin_unlock(&osb->osb_lock);
|
|
trace_ocfs2_recovery_thread_end(status);
|
|
|
|
/* Refresh all journal recovery generations from disk */
|
|
status = ocfs2_check_journals_nolocks(osb);
|
|
status = (status == -EROFS) ? 0 : status;
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* Now it is right time to recover quotas... We have to do this under
|
|
* superblock lock so that no one can start using the slot (and crash)
|
|
* before we recover it */
|
|
for (i = 0; i < rm_quota_used; i++) {
|
|
qrec = ocfs2_begin_quota_recovery(osb, rm_quota[i]);
|
|
if (IS_ERR(qrec)) {
|
|
status = PTR_ERR(qrec);
|
|
mlog_errno(status);
|
|
continue;
|
|
}
|
|
ocfs2_queue_recovery_completion(osb->journal, rm_quota[i],
|
|
NULL, NULL, qrec,
|
|
ORPHAN_NEED_TRUNCATE);
|
|
}
|
|
|
|
ocfs2_super_unlock(osb, 1);
|
|
|
|
/* queue recovery for offline slots */
|
|
ocfs2_queue_replay_slots(osb, ORPHAN_NEED_TRUNCATE);
|
|
|
|
bail:
|
|
mutex_lock(&osb->recovery_lock);
|
|
if (!status && !ocfs2_recovery_completed(osb)) {
|
|
mutex_unlock(&osb->recovery_lock);
|
|
goto restart;
|
|
}
|
|
|
|
ocfs2_free_replay_slots(osb);
|
|
osb->recovery_thread_task = NULL;
|
|
mb(); /* sync with ocfs2_recovery_thread_running */
|
|
wake_up(&osb->recovery_event);
|
|
|
|
mutex_unlock(&osb->recovery_lock);
|
|
|
|
kfree(rm_quota);
|
|
|
|
/* no one is callint kthread_stop() for us so the kthread() api
|
|
* requires that we call do_exit(). And it isn't exported, but
|
|
* complete_and_exit() seems to be a minimal wrapper around it. */
|
|
complete_and_exit(NULL, status);
|
|
}
|
|
|
|
void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)
|
|
{
|
|
mutex_lock(&osb->recovery_lock);
|
|
|
|
trace_ocfs2_recovery_thread(node_num, osb->node_num,
|
|
osb->disable_recovery, osb->recovery_thread_task,
|
|
osb->disable_recovery ?
|
|
-1 : ocfs2_recovery_map_set(osb, node_num));
|
|
|
|
if (osb->disable_recovery)
|
|
goto out;
|
|
|
|
if (osb->recovery_thread_task)
|
|
goto out;
|
|
|
|
osb->recovery_thread_task = kthread_run(__ocfs2_recovery_thread, osb,
|
|
"ocfs2rec-%s", osb->uuid_str);
|
|
if (IS_ERR(osb->recovery_thread_task)) {
|
|
mlog_errno((int)PTR_ERR(osb->recovery_thread_task));
|
|
osb->recovery_thread_task = NULL;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&osb->recovery_lock);
|
|
wake_up(&osb->recovery_event);
|
|
}
|
|
|
|
static int ocfs2_read_journal_inode(struct ocfs2_super *osb,
|
|
int slot_num,
|
|
struct buffer_head **bh,
|
|
struct inode **ret_inode)
|
|
{
|
|
int status = -EACCES;
|
|
struct inode *inode = NULL;
|
|
|
|
BUG_ON(slot_num >= osb->max_slots);
|
|
|
|
inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
|
|
slot_num);
|
|
if (!inode || is_bad_inode(inode)) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
SET_INODE_JOURNAL(inode);
|
|
|
|
status = ocfs2_read_inode_block_full(inode, bh, OCFS2_BH_IGNORE_CACHE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
status = 0;
|
|
|
|
bail:
|
|
if (inode) {
|
|
if (status || !ret_inode)
|
|
iput(inode);
|
|
else
|
|
*ret_inode = inode;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/* Does the actual journal replay and marks the journal inode as
|
|
* clean. Will only replay if the journal inode is marked dirty. */
|
|
static int ocfs2_replay_journal(struct ocfs2_super *osb,
|
|
int node_num,
|
|
int slot_num)
|
|
{
|
|
int status;
|
|
int got_lock = 0;
|
|
unsigned int flags;
|
|
struct inode *inode = NULL;
|
|
struct ocfs2_dinode *fe;
|
|
journal_t *journal = NULL;
|
|
struct buffer_head *bh = NULL;
|
|
u32 slot_reco_gen;
|
|
|
|
status = ocfs2_read_journal_inode(osb, slot_num, &bh, &inode);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
fe = (struct ocfs2_dinode *)bh->b_data;
|
|
slot_reco_gen = ocfs2_get_recovery_generation(fe);
|
|
brelse(bh);
|
|
bh = NULL;
|
|
|
|
/*
|
|
* As the fs recovery is asynchronous, there is a small chance that
|
|
* another node mounted (and recovered) the slot before the recovery
|
|
* thread could get the lock. To handle that, we dirty read the journal
|
|
* inode for that slot to get the recovery generation. If it is
|
|
* different than what we expected, the slot has been recovered.
|
|
* If not, it needs recovery.
|
|
*/
|
|
if (osb->slot_recovery_generations[slot_num] != slot_reco_gen) {
|
|
trace_ocfs2_replay_journal_recovered(slot_num,
|
|
osb->slot_recovery_generations[slot_num], slot_reco_gen);
|
|
osb->slot_recovery_generations[slot_num] = slot_reco_gen;
|
|
status = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
/* Continue with recovery as the journal has not yet been recovered */
|
|
|
|
status = ocfs2_inode_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY);
|
|
if (status < 0) {
|
|
trace_ocfs2_replay_journal_lock_err(status);
|
|
if (status != -ERESTARTSYS)
|
|
mlog(ML_ERROR, "Could not lock journal!\n");
|
|
goto done;
|
|
}
|
|
got_lock = 1;
|
|
|
|
fe = (struct ocfs2_dinode *) bh->b_data;
|
|
|
|
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
|
|
slot_reco_gen = ocfs2_get_recovery_generation(fe);
|
|
|
|
if (!(flags & OCFS2_JOURNAL_DIRTY_FL)) {
|
|
trace_ocfs2_replay_journal_skip(node_num);
|
|
/* Refresh recovery generation for the slot */
|
|
osb->slot_recovery_generations[slot_num] = slot_reco_gen;
|
|
goto done;
|
|
}
|
|
|
|
/* we need to run complete recovery for offline orphan slots */
|
|
ocfs2_replay_map_set_state(osb, REPLAY_NEEDED);
|
|
|
|
printk(KERN_NOTICE "ocfs2: Begin replay journal (node %d, slot %d) on "\
|
|
"device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev),
|
|
MINOR(osb->sb->s_dev));
|
|
|
|
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
|
|
|
|
status = ocfs2_force_read_journal(inode);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
journal = jbd2_journal_init_inode(inode);
|
|
if (journal == NULL) {
|
|
mlog(ML_ERROR, "Linux journal layer error\n");
|
|
status = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
status = jbd2_journal_load(journal);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
if (!igrab(inode))
|
|
BUG();
|
|
jbd2_journal_destroy(journal);
|
|
goto done;
|
|
}
|
|
|
|
ocfs2_clear_journal_error(osb->sb, journal, slot_num);
|
|
|
|
/* wipe the journal */
|
|
jbd2_journal_lock_updates(journal);
|
|
status = jbd2_journal_flush(journal);
|
|
jbd2_journal_unlock_updates(journal);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* This will mark the node clean */
|
|
flags = le32_to_cpu(fe->id1.journal1.ij_flags);
|
|
flags &= ~OCFS2_JOURNAL_DIRTY_FL;
|
|
fe->id1.journal1.ij_flags = cpu_to_le32(flags);
|
|
|
|
/* Increment recovery generation to indicate successful recovery */
|
|
ocfs2_bump_recovery_generation(fe);
|
|
osb->slot_recovery_generations[slot_num] =
|
|
ocfs2_get_recovery_generation(fe);
|
|
|
|
ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &fe->i_check);
|
|
status = ocfs2_write_block(osb, bh, INODE_CACHE(inode));
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
if (!igrab(inode))
|
|
BUG();
|
|
|
|
jbd2_journal_destroy(journal);
|
|
|
|
printk(KERN_NOTICE "ocfs2: End replay journal (node %d, slot %d) on "\
|
|
"device (%u,%u)\n", node_num, slot_num, MAJOR(osb->sb->s_dev),
|
|
MINOR(osb->sb->s_dev));
|
|
done:
|
|
/* drop the lock on this nodes journal */
|
|
if (got_lock)
|
|
ocfs2_inode_unlock(inode, 1);
|
|
|
|
iput(inode);
|
|
brelse(bh);
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Do the most important parts of node recovery:
|
|
* - Replay it's journal
|
|
* - Stamp a clean local allocator file
|
|
* - Stamp a clean truncate log
|
|
* - Mark the node clean
|
|
*
|
|
* If this function completes without error, a node in OCFS2 can be
|
|
* said to have been safely recovered. As a result, failure during the
|
|
* second part of a nodes recovery process (local alloc recovery) is
|
|
* far less concerning.
|
|
*/
|
|
static int ocfs2_recover_node(struct ocfs2_super *osb,
|
|
int node_num, int slot_num)
|
|
{
|
|
int status = 0;
|
|
struct ocfs2_dinode *la_copy = NULL;
|
|
struct ocfs2_dinode *tl_copy = NULL;
|
|
|
|
trace_ocfs2_recover_node(node_num, slot_num, osb->node_num);
|
|
|
|
/* Should not ever be called to recover ourselves -- in that
|
|
* case we should've called ocfs2_journal_load instead. */
|
|
BUG_ON(osb->node_num == node_num);
|
|
|
|
status = ocfs2_replay_journal(osb, node_num, slot_num);
|
|
if (status < 0) {
|
|
if (status == -EBUSY) {
|
|
trace_ocfs2_recover_node_skip(slot_num, node_num);
|
|
status = 0;
|
|
goto done;
|
|
}
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
/* Stamp a clean local alloc file AFTER recovering the journal... */
|
|
status = ocfs2_begin_local_alloc_recovery(osb, slot_num, &la_copy);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto done;
|
|
}
|
|
|
|
/* An error from begin_truncate_log_recovery is not
|
|
* serious enough to warrant halting the rest of
|
|
* recovery. */
|
|
status = ocfs2_begin_truncate_log_recovery(osb, slot_num, &tl_copy);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* Likewise, this would be a strange but ultimately not so
|
|
* harmful place to get an error... */
|
|
status = ocfs2_clear_slot(osb, slot_num);
|
|
if (status < 0)
|
|
mlog_errno(status);
|
|
|
|
/* This will kfree the memory pointed to by la_copy and tl_copy */
|
|
ocfs2_queue_recovery_completion(osb->journal, slot_num, la_copy,
|
|
tl_copy, NULL, ORPHAN_NEED_TRUNCATE);
|
|
|
|
status = 0;
|
|
done:
|
|
|
|
return status;
|
|
}
|
|
|
|
/* Test node liveness by trylocking his journal. If we get the lock,
|
|
* we drop it here. Return 0 if we got the lock, -EAGAIN if node is
|
|
* still alive (we couldn't get the lock) and < 0 on error. */
|
|
static int ocfs2_trylock_journal(struct ocfs2_super *osb,
|
|
int slot_num)
|
|
{
|
|
int status, flags;
|
|
struct inode *inode = NULL;
|
|
|
|
inode = ocfs2_get_system_file_inode(osb, JOURNAL_SYSTEM_INODE,
|
|
slot_num);
|
|
if (inode == NULL) {
|
|
mlog(ML_ERROR, "access error\n");
|
|
status = -EACCES;
|
|
goto bail;
|
|
}
|
|
if (is_bad_inode(inode)) {
|
|
mlog(ML_ERROR, "access error (bad inode)\n");
|
|
iput(inode);
|
|
inode = NULL;
|
|
status = -EACCES;
|
|
goto bail;
|
|
}
|
|
SET_INODE_JOURNAL(inode);
|
|
|
|
flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE;
|
|
status = ocfs2_inode_lock_full(inode, NULL, 1, flags);
|
|
if (status < 0) {
|
|
if (status != -EAGAIN)
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
|
|
ocfs2_inode_unlock(inode, 1);
|
|
bail:
|
|
iput(inode);
|
|
|
|
return status;
|
|
}
|
|
|
|
/* Call this underneath ocfs2_super_lock. It also assumes that the
|
|
* slot info struct has been updated from disk. */
|
|
int ocfs2_mark_dead_nodes(struct ocfs2_super *osb)
|
|
{
|
|
unsigned int node_num;
|
|
int status, i;
|
|
u32 gen;
|
|
struct buffer_head *bh = NULL;
|
|
struct ocfs2_dinode *di;
|
|
|
|
/* This is called with the super block cluster lock, so we
|
|
* know that the slot map can't change underneath us. */
|
|
|
|
for (i = 0; i < osb->max_slots; i++) {
|
|
/* Read journal inode to get the recovery generation */
|
|
status = ocfs2_read_journal_inode(osb, i, &bh, NULL);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
di = (struct ocfs2_dinode *)bh->b_data;
|
|
gen = ocfs2_get_recovery_generation(di);
|
|
brelse(bh);
|
|
bh = NULL;
|
|
|
|
spin_lock(&osb->osb_lock);
|
|
osb->slot_recovery_generations[i] = gen;
|
|
|
|
trace_ocfs2_mark_dead_nodes(i,
|
|
osb->slot_recovery_generations[i]);
|
|
|
|
if (i == osb->slot_num) {
|
|
spin_unlock(&osb->osb_lock);
|
|
continue;
|
|
}
|
|
|
|
status = ocfs2_slot_to_node_num_locked(osb, i, &node_num);
|
|
if (status == -ENOENT) {
|
|
spin_unlock(&osb->osb_lock);
|
|
continue;
|
|
}
|
|
|
|
if (__ocfs2_recovery_map_test(osb, node_num)) {
|
|
spin_unlock(&osb->osb_lock);
|
|
continue;
|
|
}
|
|
spin_unlock(&osb->osb_lock);
|
|
|
|
/* Ok, we have a slot occupied by another node which
|
|
* is not in the recovery map. We trylock his journal
|
|
* file here to test if he's alive. */
|
|
status = ocfs2_trylock_journal(osb, i);
|
|
if (!status) {
|
|
/* Since we're called from mount, we know that
|
|
* the recovery thread can't race us on
|
|
* setting / checking the recovery bits. */
|
|
ocfs2_recovery_thread(osb, node_num);
|
|
} else if ((status < 0) && (status != -EAGAIN)) {
|
|
mlog_errno(status);
|
|
goto bail;
|
|
}
|
|
}
|
|
|
|
status = 0;
|
|
bail:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Scan timer should get fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT. Add some
|
|
* randomness to the timeout to minimize multple nodes firing the timer at the
|
|
* same time.
|
|
*/
|
|
static inline unsigned long ocfs2_orphan_scan_timeout(void)
|
|
{
|
|
unsigned long time;
|
|
|
|
get_random_bytes(&time, sizeof(time));
|
|
time = ORPHAN_SCAN_SCHEDULE_TIMEOUT + (time % 5000);
|
|
return msecs_to_jiffies(time);
|
|
}
|
|
|
|
/*
|
|
* ocfs2_queue_orphan_scan calls ocfs2_queue_recovery_completion for
|
|
* every slot, queuing a recovery of the slot on the ocfs2_wq thread. This
|
|
* is done to catch any orphans that are left over in orphan directories.
|
|
*
|
|
* It scans all slots, even ones that are in use. It does so to handle the
|
|
* case described below:
|
|
*
|
|
* Node 1 has an inode it was using. The dentry went away due to memory
|
|
* pressure. Node 1 closes the inode, but it's on the free list. The node
|
|
* has the open lock.
|
|
* Node 2 unlinks the inode. It grabs the dentry lock to notify others,
|
|
* but node 1 has no dentry and doesn't get the message. It trylocks the
|
|
* open lock, sees that another node has a PR, and does nothing.
|
|
* Later node 2 runs its orphan dir. It igets the inode, trylocks the
|
|
* open lock, sees the PR still, and does nothing.
|
|
* Basically, we have to trigger an orphan iput on node 1. The only way
|
|
* for this to happen is if node 1 runs node 2's orphan dir.
|
|
*
|
|
* ocfs2_queue_orphan_scan gets called every ORPHAN_SCAN_SCHEDULE_TIMEOUT
|
|
* seconds. It gets an EX lock on os_lockres and checks sequence number
|
|
* stored in LVB. If the sequence number has changed, it means some other
|
|
* node has done the scan. This node skips the scan and tracks the
|
|
* sequence number. If the sequence number didn't change, it means a scan
|
|
* hasn't happened. The node queues a scan and increments the
|
|
* sequence number in the LVB.
|
|
*/
|
|
static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_orphan_scan *os;
|
|
int status, i;
|
|
u32 seqno = 0;
|
|
|
|
os = &osb->osb_orphan_scan;
|
|
|
|
if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
|
|
goto out;
|
|
|
|
trace_ocfs2_queue_orphan_scan_begin(os->os_count, os->os_seqno,
|
|
atomic_read(&os->os_state));
|
|
|
|
status = ocfs2_orphan_scan_lock(osb, &seqno);
|
|
if (status < 0) {
|
|
if (status != -EAGAIN)
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
/* Do no queue the tasks if the volume is being umounted */
|
|
if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE)
|
|
goto unlock;
|
|
|
|
if (os->os_seqno != seqno) {
|
|
os->os_seqno = seqno;
|
|
goto unlock;
|
|
}
|
|
|
|
for (i = 0; i < osb->max_slots; i++)
|
|
ocfs2_queue_recovery_completion(osb->journal, i, NULL, NULL,
|
|
NULL, ORPHAN_NO_NEED_TRUNCATE);
|
|
/*
|
|
* We queued a recovery on orphan slots, increment the sequence
|
|
* number and update LVB so other node will skip the scan for a while
|
|
*/
|
|
seqno++;
|
|
os->os_count++;
|
|
os->os_scantime = ktime_get_seconds();
|
|
unlock:
|
|
ocfs2_orphan_scan_unlock(osb, seqno);
|
|
out:
|
|
trace_ocfs2_queue_orphan_scan_end(os->os_count, os->os_seqno,
|
|
atomic_read(&os->os_state));
|
|
return;
|
|
}
|
|
|
|
/* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */
|
|
static void ocfs2_orphan_scan_work(struct work_struct *work)
|
|
{
|
|
struct ocfs2_orphan_scan *os;
|
|
struct ocfs2_super *osb;
|
|
|
|
os = container_of(work, struct ocfs2_orphan_scan,
|
|
os_orphan_scan_work.work);
|
|
osb = os->os_osb;
|
|
|
|
mutex_lock(&os->os_lock);
|
|
ocfs2_queue_orphan_scan(osb);
|
|
if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE)
|
|
queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work,
|
|
ocfs2_orphan_scan_timeout());
|
|
mutex_unlock(&os->os_lock);
|
|
}
|
|
|
|
void ocfs2_orphan_scan_stop(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_orphan_scan *os;
|
|
|
|
os = &osb->osb_orphan_scan;
|
|
if (atomic_read(&os->os_state) == ORPHAN_SCAN_ACTIVE) {
|
|
atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
|
|
mutex_lock(&os->os_lock);
|
|
cancel_delayed_work(&os->os_orphan_scan_work);
|
|
mutex_unlock(&os->os_lock);
|
|
}
|
|
}
|
|
|
|
void ocfs2_orphan_scan_init(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_orphan_scan *os;
|
|
|
|
os = &osb->osb_orphan_scan;
|
|
os->os_osb = osb;
|
|
os->os_count = 0;
|
|
os->os_seqno = 0;
|
|
mutex_init(&os->os_lock);
|
|
INIT_DELAYED_WORK(&os->os_orphan_scan_work, ocfs2_orphan_scan_work);
|
|
}
|
|
|
|
void ocfs2_orphan_scan_start(struct ocfs2_super *osb)
|
|
{
|
|
struct ocfs2_orphan_scan *os;
|
|
|
|
os = &osb->osb_orphan_scan;
|
|
os->os_scantime = ktime_get_seconds();
|
|
if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb))
|
|
atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE);
|
|
else {
|
|
atomic_set(&os->os_state, ORPHAN_SCAN_ACTIVE);
|
|
queue_delayed_work(osb->ocfs2_wq, &os->os_orphan_scan_work,
|
|
ocfs2_orphan_scan_timeout());
|
|
}
|
|
}
|
|
|
|
struct ocfs2_orphan_filldir_priv {
|
|
struct dir_context ctx;
|
|
struct inode *head;
|
|
struct ocfs2_super *osb;
|
|
enum ocfs2_orphan_reco_type orphan_reco_type;
|
|
};
|
|
|
|
static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name,
|
|
int name_len, loff_t pos, u64 ino,
|
|
unsigned type)
|
|
{
|
|
struct ocfs2_orphan_filldir_priv *p =
|
|
container_of(ctx, struct ocfs2_orphan_filldir_priv, ctx);
|
|
struct inode *iter;
|
|
|
|
if (name_len == 1 && !strncmp(".", name, 1))
|
|
return 0;
|
|
if (name_len == 2 && !strncmp("..", name, 2))
|
|
return 0;
|
|
|
|
/* do not include dio entry in case of orphan scan */
|
|
if ((p->orphan_reco_type == ORPHAN_NO_NEED_TRUNCATE) &&
|
|
(!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX,
|
|
OCFS2_DIO_ORPHAN_PREFIX_LEN)))
|
|
return 0;
|
|
|
|
/* Skip bad inodes so that recovery can continue */
|
|
iter = ocfs2_iget(p->osb, ino,
|
|
OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0);
|
|
if (IS_ERR(iter))
|
|
return 0;
|
|
|
|
if (!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX,
|
|
OCFS2_DIO_ORPHAN_PREFIX_LEN))
|
|
OCFS2_I(iter)->ip_flags |= OCFS2_INODE_DIO_ORPHAN_ENTRY;
|
|
|
|
/* Skip inodes which are already added to recover list, since dio may
|
|
* happen concurrently with unlink/rename */
|
|
if (OCFS2_I(iter)->ip_next_orphan) {
|
|
iput(iter);
|
|
return 0;
|
|
}
|
|
|
|
trace_ocfs2_orphan_filldir((unsigned long long)OCFS2_I(iter)->ip_blkno);
|
|
/* No locking is required for the next_orphan queue as there
|
|
* is only ever a single process doing orphan recovery. */
|
|
OCFS2_I(iter)->ip_next_orphan = p->head;
|
|
p->head = iter;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ocfs2_queue_orphans(struct ocfs2_super *osb,
|
|
int slot,
|
|
struct inode **head,
|
|
enum ocfs2_orphan_reco_type orphan_reco_type)
|
|
{
|
|
int status;
|
|
struct inode *orphan_dir_inode = NULL;
|
|
struct ocfs2_orphan_filldir_priv priv = {
|
|
.ctx.actor = ocfs2_orphan_filldir,
|
|
.osb = osb,
|
|
.head = *head,
|
|
.orphan_reco_type = orphan_reco_type
|
|
};
|
|
|
|
orphan_dir_inode = ocfs2_get_system_file_inode(osb,
|
|
ORPHAN_DIR_SYSTEM_INODE,
|
|
slot);
|
|
if (!orphan_dir_inode) {
|
|
status = -ENOENT;
|
|
mlog_errno(status);
|
|
return status;
|
|
}
|
|
|
|
inode_lock(orphan_dir_inode);
|
|
status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
status = ocfs2_dir_foreach(orphan_dir_inode, &priv.ctx);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
goto out_cluster;
|
|
}
|
|
|
|
*head = priv.head;
|
|
|
|
out_cluster:
|
|
ocfs2_inode_unlock(orphan_dir_inode, 0);
|
|
out:
|
|
inode_unlock(orphan_dir_inode);
|
|
iput(orphan_dir_inode);
|
|
return status;
|
|
}
|
|
|
|
static int ocfs2_orphan_recovery_can_continue(struct ocfs2_super *osb,
|
|
int slot)
|
|
{
|
|
int ret;
|
|
|
|
spin_lock(&osb->osb_lock);
|
|
ret = !osb->osb_orphan_wipes[slot];
|
|
spin_unlock(&osb->osb_lock);
|
|
return ret;
|
|
}
|
|
|
|
static void ocfs2_mark_recovering_orphan_dir(struct ocfs2_super *osb,
|
|
int slot)
|
|
{
|
|
spin_lock(&osb->osb_lock);
|
|
/* Mark ourselves such that new processes in delete_inode()
|
|
* know to quit early. */
|
|
ocfs2_node_map_set_bit(osb, &osb->osb_recovering_orphan_dirs, slot);
|
|
while (osb->osb_orphan_wipes[slot]) {
|
|
/* If any processes are already in the middle of an
|
|
* orphan wipe on this dir, then we need to wait for
|
|
* them. */
|
|
spin_unlock(&osb->osb_lock);
|
|
wait_event_interruptible(osb->osb_wipe_event,
|
|
ocfs2_orphan_recovery_can_continue(osb, slot));
|
|
spin_lock(&osb->osb_lock);
|
|
}
|
|
spin_unlock(&osb->osb_lock);
|
|
}
|
|
|
|
static void ocfs2_clear_recovering_orphan_dir(struct ocfs2_super *osb,
|
|
int slot)
|
|
{
|
|
ocfs2_node_map_clear_bit(osb, &osb->osb_recovering_orphan_dirs, slot);
|
|
}
|
|
|
|
/*
|
|
* Orphan recovery. Each mounted node has it's own orphan dir which we
|
|
* must run during recovery. Our strategy here is to build a list of
|
|
* the inodes in the orphan dir and iget/iput them. The VFS does
|
|
* (most) of the rest of the work.
|
|
*
|
|
* Orphan recovery can happen at any time, not just mount so we have a
|
|
* couple of extra considerations.
|
|
*
|
|
* - We grab as many inodes as we can under the orphan dir lock -
|
|
* doing iget() outside the orphan dir risks getting a reference on
|
|
* an invalid inode.
|
|
* - We must be sure not to deadlock with other processes on the
|
|
* system wanting to run delete_inode(). This can happen when they go
|
|
* to lock the orphan dir and the orphan recovery process attempts to
|
|
* iget() inside the orphan dir lock. This can be avoided by
|
|
* advertising our state to ocfs2_delete_inode().
|
|
*/
|
|
static int ocfs2_recover_orphans(struct ocfs2_super *osb,
|
|
int slot,
|
|
enum ocfs2_orphan_reco_type orphan_reco_type)
|
|
{
|
|
int ret = 0;
|
|
struct inode *inode = NULL;
|
|
struct inode *iter;
|
|
struct ocfs2_inode_info *oi;
|
|
struct buffer_head *di_bh = NULL;
|
|
struct ocfs2_dinode *di = NULL;
|
|
|
|
trace_ocfs2_recover_orphans(slot);
|
|
|
|
ocfs2_mark_recovering_orphan_dir(osb, slot);
|
|
ret = ocfs2_queue_orphans(osb, slot, &inode, orphan_reco_type);
|
|
ocfs2_clear_recovering_orphan_dir(osb, slot);
|
|
|
|
/* Error here should be noted, but we want to continue with as
|
|
* many queued inodes as we've got. */
|
|
if (ret)
|
|
mlog_errno(ret);
|
|
|
|
while (inode) {
|
|
oi = OCFS2_I(inode);
|
|
trace_ocfs2_recover_orphans_iput(
|
|
(unsigned long long)oi->ip_blkno);
|
|
|
|
iter = oi->ip_next_orphan;
|
|
oi->ip_next_orphan = NULL;
|
|
|
|
if (oi->ip_flags & OCFS2_INODE_DIO_ORPHAN_ENTRY) {
|
|
inode_lock(inode);
|
|
ret = ocfs2_rw_lock(inode, 1);
|
|
if (ret < 0) {
|
|
mlog_errno(ret);
|
|
goto unlock_mutex;
|
|
}
|
|
/*
|
|
* We need to take and drop the inode lock to
|
|
* force read inode from disk.
|
|
*/
|
|
ret = ocfs2_inode_lock(inode, &di_bh, 1);
|
|
if (ret) {
|
|
mlog_errno(ret);
|
|
goto unlock_rw;
|
|
}
|
|
|
|
di = (struct ocfs2_dinode *)di_bh->b_data;
|
|
|
|
if (di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)) {
|
|
ret = ocfs2_truncate_file(inode, di_bh,
|
|
i_size_read(inode));
|
|
if (ret < 0) {
|
|
if (ret != -ENOSPC)
|
|
mlog_errno(ret);
|
|
goto unlock_inode;
|
|
}
|
|
|
|
ret = ocfs2_del_inode_from_orphan(osb, inode,
|
|
di_bh, 0, 0);
|
|
if (ret)
|
|
mlog_errno(ret);
|
|
}
|
|
unlock_inode:
|
|
ocfs2_inode_unlock(inode, 1);
|
|
brelse(di_bh);
|
|
di_bh = NULL;
|
|
unlock_rw:
|
|
ocfs2_rw_unlock(inode, 1);
|
|
unlock_mutex:
|
|
inode_unlock(inode);
|
|
|
|
/* clear dio flag in ocfs2_inode_info */
|
|
oi->ip_flags &= ~OCFS2_INODE_DIO_ORPHAN_ENTRY;
|
|
} else {
|
|
spin_lock(&oi->ip_lock);
|
|
/* Set the proper information to get us going into
|
|
* ocfs2_delete_inode. */
|
|
oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
|
|
spin_unlock(&oi->ip_lock);
|
|
}
|
|
|
|
iput(inode);
|
|
inode = iter;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __ocfs2_wait_on_mount(struct ocfs2_super *osb, int quota)
|
|
{
|
|
/* This check is good because ocfs2 will wait on our recovery
|
|
* thread before changing it to something other than MOUNTED
|
|
* or DISABLED. */
|
|
wait_event(osb->osb_mount_event,
|
|
(!quota && atomic_read(&osb->vol_state) == VOLUME_MOUNTED) ||
|
|
atomic_read(&osb->vol_state) == VOLUME_MOUNTED_QUOTAS ||
|
|
atomic_read(&osb->vol_state) == VOLUME_DISABLED);
|
|
|
|
/* If there's an error on mount, then we may never get to the
|
|
* MOUNTED flag, but this is set right before
|
|
* dismount_volume() so we can trust it. */
|
|
if (atomic_read(&osb->vol_state) == VOLUME_DISABLED) {
|
|
trace_ocfs2_wait_on_mount(VOLUME_DISABLED);
|
|
mlog(0, "mount error, exiting!\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ocfs2_commit_thread(void *arg)
|
|
{
|
|
int status;
|
|
struct ocfs2_super *osb = arg;
|
|
struct ocfs2_journal *journal = osb->journal;
|
|
|
|
/* we can trust j_num_trans here because _should_stop() is only set in
|
|
* shutdown and nobody other than ourselves should be able to start
|
|
* transactions. committing on shutdown might take a few iterations
|
|
* as final transactions put deleted inodes on the list */
|
|
while (!(kthread_should_stop() &&
|
|
atomic_read(&journal->j_num_trans) == 0)) {
|
|
|
|
wait_event_interruptible(osb->checkpoint_event,
|
|
atomic_read(&journal->j_num_trans)
|
|
|| kthread_should_stop());
|
|
|
|
status = ocfs2_commit_cache(osb);
|
|
if (status < 0) {
|
|
static unsigned long abort_warn_time;
|
|
|
|
/* Warn about this once per minute */
|
|
if (printk_timed_ratelimit(&abort_warn_time, 60*HZ))
|
|
mlog(ML_ERROR, "status = %d, journal is "
|
|
"already aborted.\n", status);
|
|
/*
|
|
* After ocfs2_commit_cache() fails, j_num_trans has a
|
|
* non-zero value. Sleep here to avoid a busy-wait
|
|
* loop.
|
|
*/
|
|
msleep_interruptible(1000);
|
|
}
|
|
|
|
if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){
|
|
mlog(ML_KTHREAD,
|
|
"commit_thread: %u transactions pending on "
|
|
"shutdown\n",
|
|
atomic_read(&journal->j_num_trans));
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Reads all the journal inodes without taking any cluster locks. Used
|
|
* for hard readonly access to determine whether any journal requires
|
|
* recovery. Also used to refresh the recovery generation numbers after
|
|
* a journal has been recovered by another node.
|
|
*/
|
|
int ocfs2_check_journals_nolocks(struct ocfs2_super *osb)
|
|
{
|
|
int ret = 0;
|
|
unsigned int slot;
|
|
struct buffer_head *di_bh = NULL;
|
|
struct ocfs2_dinode *di;
|
|
int journal_dirty = 0;
|
|
|
|
for(slot = 0; slot < osb->max_slots; slot++) {
|
|
ret = ocfs2_read_journal_inode(osb, slot, &di_bh, NULL);
|
|
if (ret) {
|
|
mlog_errno(ret);
|
|
goto out;
|
|
}
|
|
|
|
di = (struct ocfs2_dinode *) di_bh->b_data;
|
|
|
|
osb->slot_recovery_generations[slot] =
|
|
ocfs2_get_recovery_generation(di);
|
|
|
|
if (le32_to_cpu(di->id1.journal1.ij_flags) &
|
|
OCFS2_JOURNAL_DIRTY_FL)
|
|
journal_dirty = 1;
|
|
|
|
brelse(di_bh);
|
|
di_bh = NULL;
|
|
}
|
|
|
|
out:
|
|
if (journal_dirty)
|
|
ret = -EROFS;
|
|
return ret;
|
|
}
|