mirror_zfs/man/man8/fsck.zfs.8
наб dc52c0d725 fsck.zfs: implement 4/8 exit codes as suggested in manpage
Update the fsck.zfs helper to bubble up some already-known-about 
errors if they are detected in the pool.

health=degraded => 4/"Filesystem errors left uncorrected"
health=faulted && dataset in /etc/fstab => 8/"Operational error"
pool not found => 8/"Operational error"
everything else => 0

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #11806
2021-04-07 13:24:18 -07:00

72 lines
2.1 KiB
Groff

'\" t
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.\" Copyright 2013 Darik Horn <dajhorn@vanadac.com>. All rights reserved.
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.TH FSCK.ZFS 8 "Mar 27, 2021" OpenZFS
.SH NAME
fsck.zfs \- Dummy ZFS filesystem checker.
.SH SYNOPSIS
.LP
.BI "fsck.zfs [" "options" "] <" "dataset" ">…"
.SH DESCRIPTION
.LP
\fBfsck.zfs\fR is a thin shell wrapper that at most checks the status of a
dataset's container pool. It is installed by OpenZFS because some Linux
distributions expect a fsck helper for all filesystems.
.LP
If more than one \fIdataset\fR is specified, each is checked in turn
and results binary ored.
.SH OPTIONS
.HP
All \fIoptions\fR are ignored.
.SH "NOTES"
.LP
ZFS datasets are checked by running \fBzpool scrub\fR on the
containing pool. An individual ZFS dataset is never checked
independently of its pool, which is unlike a regular filesystem.
.LP
However, the
.BR fsck (8)
interface still allows it to communicate some errors:
if the \fIdataset\fR is in a degraded pool, then \fBfsck.zfs\fR will
return exit code 4 to indicate an uncorrected filesystem error.
.LP
Similarly, if the \fIdataset\fR is in a faulted pool and has a legacy
/etc/fstab record, then \fBfsck.zfs\fR will return exit code 8 to
indicate a fatal operational error.
.SH "AUTHORS"
.LP
Darik Horn <dajhorn@vanadac.com>.
.SH "SEE ALSO"
.BR fsck (8),
.BR fstab (5),
.BR zpool-scrub (8)