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linux_dsm_epyc7002/fs/gfs2/util.c
Bob Peterson b524abcc01 gfs2: slow the deluge of io error messages 
When an io error is hit, it calls gfs2_io_error_bh_i for every
journal buffer it can't write. Since we changed gfs2_io_error_bh_i
recently to withdraw later in the cycle, it sends a flood of
errors to the console. This patch checks for the file system already
being withdrawn, and if so, doesn't send more messages. It doesn't
stop the flood of messages, but it slows it down and keeps it more
reasonable.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
2018-10-05 10:51:11 -05:00

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/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License version 2.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/crc32.h>
#include <linux/gfs2_ondisk.h>
#include <linux/uaccess.h>
#include "gfs2.h"
#include "incore.h"
#include "glock.h"
#include "rgrp.h"
#include "util.h"
struct kmem_cache *gfs2_glock_cachep __read_mostly;
struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
struct kmem_cache *gfs2_inode_cachep __read_mostly;
struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
struct kmem_cache *gfs2_quotad_cachep __read_mostly;
struct kmem_cache *gfs2_qadata_cachep __read_mostly;
mempool_t *gfs2_page_pool __read_mostly;
void gfs2_assert_i(struct gfs2_sbd *sdp)
{
fs_emerg(sdp, "fatal assertion failed\n");
}
int gfs2_lm_withdraw(struct gfs2_sbd *sdp, const char *fmt, ...)
{
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
const struct lm_lockops *lm = ls->ls_ops;
va_list args;
struct va_format vaf;
if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
return 0;
if (fmt) {
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
fs_err(sdp, "%pV", &vaf);
va_end(args);
}
if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
fs_err(sdp, "about to withdraw this file system\n");
BUG_ON(sdp->sd_args.ar_debug);
kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
wait_for_completion(&sdp->sd_wdack);
if (lm->lm_unmount) {
fs_err(sdp, "telling LM to unmount\n");
lm->lm_unmount(sdp);
}
set_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags);
fs_err(sdp, "withdrawn\n");
dump_stack();
}
if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
panic("GFS2: fsid=%s: panic requested\n", sdp->sd_fsname);
return -1;
}
/**
* gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
* Returns: -1 if this call withdrew the machine,
* -2 if it was already withdrawn
*/
int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
const char *function, char *file, unsigned int line)
{
int me;
me = gfs2_lm_withdraw(sdp,
"fatal: assertion \"%s\" failed\n"
" function = %s, file = %s, line = %u\n",
assertion, function, file, line);
dump_stack();
return (me) ? -1 : -2;
}
/**
* gfs2_assert_warn_i - Print a message to the console if @assertion is false
* Returns: -1 if we printed something
* -2 if we didn't
*/
int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
const char *function, char *file, unsigned int line)
{
if (time_before(jiffies,
sdp->sd_last_warning +
gfs2_tune_get(sdp, gt_complain_secs) * HZ))
return -2;
if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
fs_warn(sdp, "warning: assertion \"%s\" failed at function = %s, file = %s, line = %u\n",
assertion, function, file, line);
if (sdp->sd_args.ar_debug)
BUG();
else
dump_stack();
if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
"GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
sdp->sd_fsname, assertion,
sdp->sd_fsname, function, file, line);
sdp->sd_last_warning = jiffies;
return -1;
}
/**
* gfs2_consist_i - Flag a filesystem consistency error and withdraw
* Returns: -1 if this call withdrew the machine,
* 0 if it was already withdrawn
*/
int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
char *file, unsigned int line)
{
int rv;
rv = gfs2_lm_withdraw(sdp,
"fatal: filesystem consistency error - function = %s, file = %s, line = %u\n",
function, file, line);
return rv;
}
/**
* gfs2_consist_inode_i - Flag an inode consistency error and withdraw
* Returns: -1 if this call withdrew the machine,
* 0 if it was already withdrawn
*/
int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
const char *function, char *file, unsigned int line)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
int rv;
rv = gfs2_lm_withdraw(sdp,
"fatal: filesystem consistency error\n"
" inode = %llu %llu\n"
" function = %s, file = %s, line = %u\n",
(unsigned long long)ip->i_no_formal_ino,
(unsigned long long)ip->i_no_addr,
function, file, line);
return rv;
}
/**
* gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
* Returns: -1 if this call withdrew the machine,
* 0 if it was already withdrawn
*/
int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
const char *function, char *file, unsigned int line)
{
struct gfs2_sbd *sdp = rgd->rd_sbd;
int rv;
gfs2_rgrp_dump(NULL, rgd->rd_gl);
rv = gfs2_lm_withdraw(sdp,
"fatal: filesystem consistency error\n"
" RG = %llu\n"
" function = %s, file = %s, line = %u\n",
(unsigned long long)rgd->rd_addr,
function, file, line);
return rv;
}
/**
* gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
* Returns: -1 if this call withdrew the machine,
* -2 if it was already withdrawn
*/
int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
const char *type, const char *function, char *file,
unsigned int line)
{
int me;
me = gfs2_lm_withdraw(sdp,
"fatal: invalid metadata block\n"
" bh = %llu (%s)\n"
" function = %s, file = %s, line = %u\n",
(unsigned long long)bh->b_blocknr, type,
function, file, line);
return (me) ? -1 : -2;
}
/**
* gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
* Returns: -1 if this call withdrew the machine,
* -2 if it was already withdrawn
*/
int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
u16 type, u16 t, const char *function,
char *file, unsigned int line)
{
int me;
me = gfs2_lm_withdraw(sdp,
"fatal: invalid metadata block\n"
" bh = %llu (type: exp=%u, found=%u)\n"
" function = %s, file = %s, line = %u\n",
(unsigned long long)bh->b_blocknr, type, t,
function, file, line);
return (me) ? -1 : -2;
}
/**
* gfs2_io_error_i - Flag an I/O error and withdraw
* Returns: -1 if this call withdrew the machine,
* 0 if it was already withdrawn
*/
int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
unsigned int line)
{
int rv;
rv = gfs2_lm_withdraw(sdp,
"fatal: I/O error\n"
" function = %s, file = %s, line = %u\n",
function, file, line);
return rv;
}
/**
* gfs2_io_error_bh_i - Flag a buffer I/O error
* @withdraw: withdraw the filesystem
*/
void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
const char *function, char *file, unsigned int line,
bool withdraw)
{
if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
fs_err(sdp,
"fatal: I/O error\n"
" block = %llu\n"
" function = %s, file = %s, line = %u\n",
(unsigned long long)bh->b_blocknr,
function, file, line);
if (withdraw)
gfs2_lm_withdraw(sdp, NULL);
}
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