The fsck.xfs script did nothing, because xfs doesn't need a fsck to be
run on every unclean shutdown. However, sometimes it may happen that the
root filesystem really requires the usage of xfs_repair and then it is a
hassle. This patch makes the situation a bit easier by detecting forced
checks (/forcefsck or fsck.mode=force), so user can require the repair,
without the repair being run all the time.
Signed-off-by: Jan Tulak <jtulak@xxxxxxxxxx>
---
Changelog:
v3:
- too quick with fixing in v2... add line at the end of the file
v2:
- return the "exit 0" at the end
v1:
- test for xfs_repair binary
- run only in non-interactive session
- translate xfs_repair return codes to fsck ones
- run only if the filesystem is not mounted
- add manpage update
---
fsck/xfs_fsck.sh | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
man/man8/fsck.xfs.8 | 12 +++++++++-
2 files changed, 75 insertions(+), 2 deletions(-)
diff --git a/fsck/xfs_fsck.sh b/fsck/xfs_fsck.sh
index e52969e4..0ec6b049 100755
--- a/fsck/xfs_fsck.sh
+++ b/fsck/xfs_fsck.sh
@@ -3,11 +3,42 @@
# Copyright (c) 2006 Silicon Graphics, Inc. All Rights Reserved.
#
+NAME=$0
+
+# get the right return code for fsck
+function repair2fsck_code() {
+ case $1 in
+ 0) return 0 # everything is ok
+ ;;
+ 1) echo "$NAME error: xfs_repair could not fix the filesystem." 1>&2
+ return 4 # errors left uncorrected
+ ;;
+ 2) echo "$NAME error: The filesystem to be checked must not be mounted." 1>&2
+ return 4 # it should not me mounted during boot, something is wrong
+ ;;
+ 3) return 1 # The fs has been fixed
+ ;;
+ *) echo "$NAME error: An unknown return code from xfs_repair '$1'" 1>&2
+ return 4 # something went wrong with xfs_repair
+ esac
+}
+
+function ensure_not_mounted() {
+ local dev=$1
+ mounted=`grep -c "^$dev " /proc/mounts`
+ if [ $mounted -ne 0 ]; then
+ echo "$NAME error: The filesystem to be checked must not be mounted." 1>&2
+ exit 4
+ fi
+}
+
AUTO=false
-while getopts ":aApy" c
+FORCE=false
+while getopts ":aApyf" c
do
case $c in
a|A|p|y) AUTO=true;;
+ f) FORCE=true;;
esac
done
eval DEV=\${$#}
@@ -15,6 +46,38 @@ if [ ! -e $DEV ]; then
echo "$0: $DEV does not exist"
exit 8
fi
+
+# The flag -f is added by systemd/init scripts when /forcefsck file is present
+# or fsck.mode=force is used during boot; an unclean shutdown won't trigger
+# this check, user has to explicitly require a forced fsck.
+# But first of all, test if it is a non-interactive session. Use multiple
+# methods to capture most of the cases:
+# The case for *i* and -n "$PS1" are commonly suggested in bash manual
+# and the -t 0 test checks stdin
+case $- in
+ *i*) FORCE=false ;;
+esac
+if [ -n "$PS1" -o -t 0 ]; then
+ FORCE=false
+fi
+
+if $FORCE; then
+ if [ -f /sbin/xfs_repair ]; then
+ BIN="/sbin/xfs_repair"
+ elif [ -f /usr/sbin/xfs_repair ]; then
+ BIN="/usr/sbin/xfs_repair"
+ else
+ echo "$NAME error: xfs_repair was not found!" 1>&2
+ exit 4
+ fi
+
+ ensure_not_mounted $DEV
+
+ $BIN -e $DEV
+ repair2fsck_code $?
+ exit $?
+fi
+
if $AUTO; then
echo "$0: XFS file system."
else
diff --git a/man/man8/fsck.xfs.8 b/man/man8/fsck.xfs.8
index ace7252d..3eb3ad7f 100644
--- a/man/man8/fsck.xfs.8
+++ b/man/man8/fsck.xfs.8
@@ -1,6 +1,6 @@
.TH fsck.xfs 8
.SH NAME
-fsck.xfs \- do nothing, successfully
+fsck.xfs \- do nothing, successfuly
.SH SYNOPSIS
.B fsck.xfs
[
@@ -21,6 +21,16 @@ If you wish to check the consistency of an XFS filesystem,
or repair a damaged or corrupt XFS filesystem,
see
.BR xfs_repair (8).
+.PP
+However, it may happen that a forced repair is required and in makes sense to start
+.BR xfs_repair (8)
+on startup (either using /forcefsck file or fsck.mode=force kernel option). In this case
+.B fsck.xfs
+run
+.B xfs_repair
+for the user. But if run outside of boot environment or without the
+.B -f
+option, it does nothing.
.
.SH FILES
.IR /etc/fstab .
--
2.15.0
--
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