From: Darrick J. Wong <djwong@xxxxxxxxxx>
Make sure that the needsrepair feature flag can be cleared only by
repair and that mounts are prohibited when the feature is set.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
common/xfs | 21 +++++++++++
tests/xfs/768 | 82 +++++++++++++++++++++++++++++++++++++++++++
tests/xfs/768.out | 4 ++
tests/xfs/770 | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++
tests/xfs/770.out | 2 +
tests/xfs/group | 2 +
6 files changed, 212 insertions(+)
create mode 100755 tests/xfs/768
create mode 100644 tests/xfs/768.out
create mode 100755 tests/xfs/770
create mode 100644 tests/xfs/770.out
diff --git a/common/xfs b/common/xfs
index c97e08ba..051e5652 100644
--- a/common/xfs
+++ b/common/xfs
@@ -1091,3 +1091,24 @@ _require_xfs_copy()
[ "$USE_EXTERNAL" = yes ] && \
_notrun "Cannot xfs_copy with external devices"
}
+
+# Print the status of the given features on the scratch filesystem.
+# Returns 0 if all features are found, 1 otherwise.
+_check_scratch_xfs_features()
+{
+ local features="$(_scratch_xfs_db -c 'version')"
+ local output=("FEATURES:")
+ local found=0
+
+ for feature in "$@"; do
+ local status="NO"
+ if echo "${features}" | grep -q -w "${feature}"; then
+ status="YES"
+ found=$((found + 1))
+ fi
+ output+=("${feature}:${status}")
+ done
+
+ echo "${output[@]}"
+ test "${found}" -eq "$#"
+}
diff --git a/tests/xfs/768 b/tests/xfs/768
new file mode 100755
index 00000000..7b909b76
--- /dev/null
+++ b/tests/xfs/768
@@ -0,0 +1,82 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2021 Oracle. All Rights Reserved.
+#
+# FS QA Test No. 768
+#
+# Make sure that the kernel won't mount a filesystem if repair forcibly sets
+# NEEDSREPAIR while fixing metadata. Corrupt a directory in such a way as
+# to force repair to write an invalid dirent value as a sentinel to trigger a
+# repair activity in a later phase. Use a debug knob in xfs_repair to abort
+# the repair immediately after forcing the flag on.
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs xfs
+_require_scratch
+grep -q LIBXFS_DEBUG_WRITE_CRASH $XFS_REPAIR_PROG || \
+ _notrun "libxfs write failure injection hook not detected?"
+
+rm -f $seqres.full
+
+# Set up a real filesystem for our actual test
+_scratch_mkfs -m crc=1 >> $seqres.full
+
+# Create a directory large enough to have a dir data block. 2k worth of
+# dirent names ought to do it.
+_scratch_mount
+mkdir -p $SCRATCH_MNT/fubar
+for i in $(seq 0 256 2048); do
+ fname=$(printf "%0255d" $i)
+ ln -s -f urk $SCRATCH_MNT/fubar/$fname
+done
+inum=$(stat -c '%i' $SCRATCH_MNT/fubar)
+_scratch_unmount
+
+# Fuzz the directory
+_scratch_xfs_db -x -c "inode $inum" -c "dblock 0" \
+ -c "fuzz -d bu[2].inumber add" >> $seqres.full
+
+# Try to repair the directory, force it to crash after setting needsrepair
+LIBXFS_DEBUG_WRITE_CRASH=ddev=2 _scratch_xfs_repair 2>> $seqres.full
+test $? -eq 137 || echo "repair should have been killed??"
+_scratch_xfs_db -c 'version' >> $seqres.full
+
+# We can't mount, right?
+_check_scratch_xfs_features NEEDSREPAIR
+_try_scratch_mount &> $tmp.mount
+res=$?
+_filter_scratch < $tmp.mount
+if [ $res -eq 0 ]; then
+ echo "Should not be able to mount after needsrepair crash"
+ _scratch_unmount
+fi
+
+# Repair properly this time and retry the mount
+_scratch_xfs_repair 2>> $seqres.full
+_scratch_xfs_db -c 'version' >> $seqres.full
+_check_scratch_xfs_features NEEDSREPAIR
+
+_scratch_mount
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/768.out b/tests/xfs/768.out
new file mode 100644
index 00000000..1168ba25
--- /dev/null
+++ b/tests/xfs/768.out
@@ -0,0 +1,4 @@
+QA output created by 768
+FEATURES: NEEDSREPAIR:YES
+mount: SCRATCH_MNT: mount(2) system call failed: Structure needs cleaning.
+FEATURES: NEEDSREPAIR:NO
diff --git a/tests/xfs/770 b/tests/xfs/770
new file mode 100755
index 00000000..1d0effd9
--- /dev/null
+++ b/tests/xfs/770
@@ -0,0 +1,101 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2021 Oracle. All Rights Reserved.
+#
+# FS QA Test No. 770
+#
+# Populate a filesystem with all types of metadata, then run repair with the
+# libxfs write failure trigger set to go after a single write. Check that the
+# injected error trips, causing repair to abort, that needsrepair is set on the
+# fs, the kernel won't mount; and that a non-injecting repair run clears
+# needsrepair and makes the filesystem mountable again.
+#
+# Repeat with the trip point set to successively higher numbers of writes until
+# we hit ~200 writes or repair manages to run to completion without tripping.
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/populate
+. ./common/filter
+
+# real QA test starts here
+_supported_fs xfs
+
+_require_scratch_xfs_crc # needsrepair only exists for v5
+_require_populate_commands
+
+rm -f ${RESULT_DIR}/require_scratch # we take care of checking the fs
+rm -f $seqres.full
+
+max_writes=200 # 200 loops should be enough for anyone
+nr_incr=$((13 / TIME_FACTOR))
+test $nr_incr -lt 1 && nr_incr=1
+for ((nr_writes = 1; nr_writes < max_writes; nr_writes += nr_incr)); do
+ test -w /dev/ttyprintk && \
+ echo "fail after $nr_writes writes" >> /dev/ttyprintk
+ echo "fail after $nr_writes writes" >> $seqres.full
+
+ # Populate the filesystem
+ _scratch_populate_cached nofill >> $seqres.full 2>&1
+
+ # Start a repair and force it to abort after some number of writes
+ LIBXFS_DEBUG_WRITE_CRASH=ddev=$nr_writes _scratch_xfs_repair 2>> $seqres.full
+ res=$?
+ if [ $res -ne 0 ] && [ $res -ne 137 ]; then
+ echo "repair failed with $res??"
+ break
+ elif [ $res -eq 0 ]; then
+ [ $nr_writes -eq 1 ] && \
+ echo "ran to completion on the first try?"
+ break
+ fi
+
+ _scratch_xfs_db -c 'version' >> $seqres.full
+ if _check_scratch_xfs_features NEEDSREPAIR > /dev/null; then
+ # NEEDSREPAIR is set, so check that we can't mount.
+ _try_scratch_mount &>> $seqres.full
+ if [ $? -eq 0 ]; then
+ echo "Should not be able to mount after repair crash"
+ _scratch_unmount
+ fi
+ elif _scratch_xfs_repair -n &>> $seqres.full; then
+ # NEEDSREPAIR was not set, but repair -n didn't find problems.
+ # It's possible that the write failure injector triggered on
+ # the write that clears NEEDSREPAIR.
+ true
+ else
+ # NEEDSREPAIR was not set, but there are errors!
+ echo "NEEDSREPAIR should be set on corrupt fs"
+ fi
+
+ # Repair properly this time and retry the mount
+ _scratch_xfs_repair 2>> $seqres.full
+ _scratch_xfs_db -c 'version' >> $seqres.full
+ _check_scratch_xfs_features NEEDSREPAIR > /dev/null && \
+ echo "Repair failed to clear NEEDSREPAIR on the $nr_writes writes test"
+
+ # Make sure all the checking tools think this fs is ok
+ _scratch_mount
+ _check_scratch_fs
+ _scratch_unmount
+done
+
+# success, all done
+echo Silence is golden.
+status=0
+exit
diff --git a/tests/xfs/770.out b/tests/xfs/770.out
new file mode 100644
index 00000000..725d740b
--- /dev/null
+++ b/tests/xfs/770.out
@@ -0,0 +1,2 @@
+QA output created by 770
+Silence is golden.
diff --git a/tests/xfs/group b/tests/xfs/group
index fe83f82d..09fddb5a 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -520,3 +520,5 @@
537 auto quick
538 auto stress
539 auto quick mount
+768 auto quick repair
+770 auto repair
