lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

36
fs/gfs2/super.c
View File

@ -68,6 +68,8 @@ enum {
Opt_discard,
Opt_nodiscard,
Opt_commit,
Opt_err_withdraw,
Opt_err_panic,
Opt_error,
};
@ -97,6 +99,8 @@ static const match_table_t tokens = {
{Opt_discard, "discard"},
{Opt_nodiscard, "nodiscard"},
{Opt_commit, "commit=%d"},
{Opt_err_withdraw, "errors=withdraw"},
{Opt_err_panic, "errors=panic"},
{Opt_error, NULL}
};
@ -152,6 +156,11 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
args->ar_localcaching = 1;
break;
case Opt_debug:
if (args->ar_errors == GFS2_ERRORS_PANIC) {
fs_info(sdp, "-o debug and -o errors=panic "
"are mutually exclusive.\n");
return -EINVAL;
}
args->ar_debug = 1;
break;
case Opt_nodebug:
@ -205,6 +214,17 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
return rv ? rv : -EINVAL;
}
break;
case Opt_err_withdraw:
args->ar_errors = GFS2_ERRORS_WITHDRAW;
break;
case Opt_err_panic:
if (args->ar_debug) {
fs_info(sdp, "-o debug and -o errors=panic "
"are mutually exclusive.\n");
return -EINVAL;
}
args->ar_errors = GFS2_ERRORS_PANIC;
break;
case Opt_error:
default:
fs_info(sdp, "invalid mount option: %s\n", o);
@ -1226,6 +1246,22 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
lfsecs = sdp->sd_tune.gt_log_flush_secs;
if (lfsecs != 60)
seq_printf(s, ",commit=%d", lfsecs);
if (args->ar_errors != GFS2_ERRORS_DEFAULT) {
const char *state;
switch (args->ar_errors) {
case GFS2_ERRORS_WITHDRAW:
state = "withdraw";
break;
case GFS2_ERRORS_PANIC:
state = "panic";
break;
default:
state = "unknown";
break;
}
seq_printf(s, ",errors=%s", state);
}
return 0;
}