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Date: Tue, 09 Aug 2022 14:00:58 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: djwong@...nel.org, guaneryu@...il.com, zlang@...hat.com
Cc: linux-xfs@...r.kernel.org, fstests@...r.kernel.org, guan@...u.me,
tytso@....edu, linux-ext4@...r.kernel.org
Subject: [PATCH 3/3] common/ext4: provide custom ext4 scratch fs options
From: Darrick J. Wong <djwong@...nel.org>
Create a _scratch_options backend for ext* so that we can inject
pathnames to external log devices into the scratch fs mount options.
This enables common/dm* to install block device filters, e.g. dm-error
for stress testing.
Signed-off-by: Darrick J. Wong <djwong@...nel.org>
---
common/ext4 | 45 +++++++++++++++++++++++++++++++++++++++++----
common/rc | 12 +++++++++++-
2 files changed, 52 insertions(+), 5 deletions(-)
diff --git a/common/ext4 b/common/ext4
index 287705af..f4c3c413 100644
--- a/common/ext4
+++ b/common/ext4
@@ -63,16 +63,32 @@ _setup_large_ext4_fs()
return 0
}
+_scratch_mkfs_ext4_opts()
+{
+ mkfs_opts=$*
+
+ _scratch_options mkfs
+
+ echo "$MKFS_EXT4_PROG $SCRATCH_OPTIONS $mkfs_opts"
+}
+
_scratch_mkfs_ext4()
{
- local mkfs_cmd="$MKFS_EXT4_PROG -F"
+ local mkfs_cmd="`_scratch_mkfs_ext4_opts`"
local mkfs_filter="grep -v -e ^Warning: -e \"^mke2fs \" | grep -v \"^$\""
local tmp=`mktemp -u`
local mkfs_status
- [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ] && \
- $mkfs_cmd -O journal_dev $MKFS_OPTIONS $SCRATCH_LOGDEV && \
- mkfs_cmd="$mkfs_cmd -J device=$SCRATCH_LOGDEV"
+ if [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ]; then
+ $MKFS_EXT4_PROG -F -O journal_dev $MKFS_OPTIONS $* $SCRATCH_LOGDEV 2>$tmp.mkfserr 1>$tmp.mkfsstd
+ mkjournal_status=$?
+
+ if [ $mkjournal_status -ne 0 ]; then
+ cat $tmp.mkfsstd
+ cat $tmp.mkfserr >&2
+ return $mkjournal_status
+ fi
+ fi
_scratch_do_mkfs "$mkfs_cmd" "$mkfs_filter" $* 2>$tmp.mkfserr 1>$tmp.mkfsstd
mkfs_status=$?
@@ -154,3 +170,24 @@ _require_scratch_richacl_ext4()
|| _notrun "kernel doesn't support richacl feature on $FSTYP"
_scratch_unmount
}
+
+_scratch_ext4_options()
+{
+ local type=$1
+ local log_opt=""
+
+ case $type in
+ mkfs)
+ SCRATCH_OPTIONS="$SCRATCH_OPTIONS -F"
+ log_opt="-J device=$SCRATCH_LOGDEV"
+ ;;
+ mount)
+ # As of kernel 5.19, the kernel mount option path parser only
+ # accepts direct paths to block devices--the final path
+ # component cannot be a symlink.
+ log_opt="-o journal_path=$(realpath -q "$SCRATCH_LOGDEV")"
+ ;;
+ esac
+ [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ] && \
+ SCRATCH_OPTIONS="$SCRATCH_OPTIONS ${log_opt}"
+}
diff --git a/common/rc b/common/rc
index dc1d65c3..e20c494c 100644
--- a/common/rc
+++ b/common/rc
@@ -178,6 +178,9 @@ _scratch_options()
"xfs")
_scratch_xfs_options "$@"
;;
+ ext2|ext3|ext4|ext4dev)
+ _scratch_ext4_options "$@"
+ ;;
esac
}
@@ -964,6 +967,13 @@ _scratch_mkfs_sized()
fi
;;
ext2|ext3|ext4|ext4dev)
+ # Can't use _scratch_mkfs_ext4 here because the block count has
+ # to come after the device path.
+ if [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_LOGDEV" ]; then
+ ${MKFS_PROG} -F -O journal_dev $MKFS_OPTIONS $SCRATCH_LOGDEV || \
+ _notrun "Could not make scratch logdev"
+ MKFS_OPTIONS="$MKFS_OPTIONS -J device=$SCRATCH_LOGDEV"
+ fi
${MKFS_PROG} -t $FSTYP -F $MKFS_OPTIONS -b $blocksize $SCRATCH_DEV $blocks
;;
gfs2)
@@ -1093,7 +1103,7 @@ _scratch_mkfs_blocksized()
_scratch_mkfs_xfs $MKFS_OPTIONS -b size=$blocksize
;;
ext2|ext3|ext4)
- ${MKFS_PROG} -t $FSTYP -F $MKFS_OPTIONS -b $blocksize $SCRATCH_DEV
+ _scratch_mkfs_ext4 $MKFS_OPTIONS -b $blocksize
;;
gfs2)
${MKFS_PROG} -t $FSTYP $MKFS_OPTIONS -O -b $blocksize $SCRATCH_DEV
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