diff mbox series

[10/11] xfs_admin: support adding features to V5 filesystems

Message ID 161308439838.3850286.2084912955688223044.stgit@magnolia (mailing list archive)
State Superseded
Headers show
Series xfs: add the ability to flag a fs for repair | expand

Commit Message

Darrick J. Wong Feb. 11, 2021, 10:59 p.m. UTC
From: Darrick J. Wong <djwong@kernel.org>

Teach the xfs_admin script how to add features to V5 filesystems.
Technically speaking we could add lazycount to the list, but that option
is only useful for the V4 format which is deprecated.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
 db/xfs_admin.sh      |    6 ++++--
 man/man8/xfs_admin.8 |   22 ++++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)
diff mbox series


diff --git a/db/xfs_admin.sh b/db/xfs_admin.sh
index 430872ef..7a467dbe 100755
--- a/db/xfs_admin.sh
+++ b/db/xfs_admin.sh
@@ -8,9 +8,10 @@  status=0
-USAGE="Usage: xfs_admin [-efjlpuV] [-c 0|1] [-L label] [-r rtdev] [-U uuid] device [logdev]"
+USAGE="Usage: xfs_admin [-efjlpuV] [-c 0|1] [-L label] [-O v5_feature] [-r rtdev] [-U uuid] device [logdev]"
-while getopts "c:efjlL:pr:uU:V" c
+while getopts "c:efjlL:O:pr:uU:V" c
 	case $c in
 	c)	REPAIR_OPTS=$REPAIR_OPTS" -c lazycount="$OPTARG;;
@@ -19,6 +20,7 @@  do
 	j)	DB_OPTS=$DB_OPTS" -c 'version log2'";;
 	l)	DB_OPTS=$DB_OPTS" -r -c label";;
 	L)	DB_OPTS=$DB_OPTS" -c 'label "$OPTARG"'";;
 	p)	DB_OPTS=$DB_OPTS" -c 'version projid32bit'";;
 	r)	REPAIR_DEV_OPTS=" -r '$OPTARG'";;
 	u)	DB_OPTS=$DB_OPTS" -r -c uuid";;
diff --git a/man/man8/xfs_admin.8 b/man/man8/xfs_admin.8
index cccbb224..055a502a 100644
--- a/man/man8/xfs_admin.8
+++ b/man/man8/xfs_admin.8
@@ -6,6 +6,8 @@  xfs_admin \- change parameters of an XFS filesystem
 .B \-eflpu
 ] [
+.BI \-O " featurelist"
+] [
 .BR "\-c 0" | 1
 ] [
 .B \-L
@@ -106,6 +108,26 @@  The filesystem label can be cleared using the special "\c
 " value for
 .IR label .
+.BI \-O " feature1" = "status" , "feature2" = "status..."
+Add or remove features on an existing V5 filesystem.
+The features should be specified as a comma-separated list.
+.I status
+should be either 0 to disable the feature or 1 to enable the feature.
+Note, however, that most features cannot be disabled.
+Administrators must ensure the filesystem is clean by running
+.B xfs_repair -n
+to inspect the filesystem before performing the upgrade.
+If corruption is found, recovery procedures (e.g. reformat followed by
+restoration from backup; or running
+.B xfs_repair
+without the
+.BR -n )
+must be followed to clean the filesystem.
+There are currently no feature options.
 .BI \-U " uuid"
 Set the UUID of the filesystem to
 .IR uuid .