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GFS2: Add "-o errors=panic|withdraw" mount options

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This patch adds "-o errors=panic" and "-o errors=withdraw" to the
gfs2 mount options.  The "errors=withdraw" option is today's
current behaviour, meaning to withdraw from the file system if a
non-serious gfs2 error occurs.  The new "errors=panic" option
tells gfs2 to force a kernel panic if a non-serious gfs2 file
system error occurs.  This may be useful, for example, where
fabric-level fencing is used that has no way to reboot (such as
fence_scsi).

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson
2009-08-24 10:44:18 +01:00
committed by Steven Whitehouse
parent cd0120751d
commit d34843d0c4
4 changed files with 71 additions and 14 deletions
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41
fs/gfs2/util.c
View File

@@ -38,24 +38,30 @@ int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
const struct lm_lockops *lm = ls->ls_ops;
va_list args;
if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
return 0;
va_start(args, fmt);
vprintk(fmt, args);
va_end(args);
fs_err(sdp, "about to withdraw this file system\n");
BUG_ON(sdp->sd_args.ar_debug);
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);
kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
if (lm->lm_unmount) {
fs_err(sdp, "telling LM to unmount\n");
lm->lm_unmount(sdp);
if (lm->lm_unmount) {
fs_err(sdp, "telling LM to unmount\n");
lm->lm_unmount(sdp);
}
fs_err(sdp, "withdrawn\n");
dump_stack();
}
fs_err(sdp, "withdrawn\n");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;
}
@@ -93,17 +99,24 @@ int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
gfs2_tune_get(sdp, gt_complain_secs) * HZ))
return -2;
printk(KERN_WARNING
"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);
if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
printk(KERN_WARNING
"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);
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;