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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2021 Oracle. All Rights Reserved.
#
# FS QA Test No. 155
#
# 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.
. ./common/preamble
_begin_fstest auto repair
# Import common functions.
. ./common/populate
. ./common/filter
# real QA test starts here
_supported_fs xfs
_require_scratch_nocheck
_require_scratch_xfs_crc # needsrepair only exists for v5
_require_populate_commands
_require_libxfs_debug_flag LIBXFS_DEBUG_WRITE_CRASH
_require_command "$TIMEOUT_PROG" timeout
# Inject a 10 minute abortive timeout on the repair program so that deadlocks
# in the program do not cause fstests to hang indefinitely.
XFS_REPAIR_PROG="$TIMEOUT_PROG -s ABRT 10m $XFS_REPAIR_PROG"
# Populate the filesystem
_scratch_populate_cached nofill >> $seqres.full 2>&1
max_writes=200 # 200 loops should be enough for anyone
nr_incr=$((13 / TIME_FACTOR))
test $nr_incr -lt 1 && nr_incr=1
for ((nr_writes = 1; nr_writes < max_writes; nr_writes += nr_incr)); do
# Add a tiny bit of randomness into each run
allowed_writes=$(( nr_writes + (RANDOM % 7) ))
echo "Setting debug hook to crash after $allowed_writes writes." >> $seqres.full
# Start a repair and force it to abort after some number of writes
LIBXFS_DEBUG_WRITE_CRASH=ddev=$allowed_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
# Check the state of NEEDSREPAIR after repair fails. If it isn't set
# but repair -n says the fs is clean, then it's possible that the
# injected error caused it to abort immediately after the write that
# cleared NEEDSREPAIR.
if ! _check_scratch_xfs_features NEEDSREPAIR &> /dev/null &&
! _scratch_xfs_repair -n &>> $seqres.full; then
echo "NEEDSREPAIR should be set on corrupt fs"
fi
done
# If NEEDSREPAIR is still set on the filesystem, ensure that a full run
# cleans everything up.
echo "Checking filesystem one last time after $allowed_writes writes." >> $seqres.full
if _check_scratch_xfs_features NEEDSREPAIR &> /dev/null; then
echo "Clearing NEEDSREPAIR" >> $seqres.full
_scratch_xfs_repair 2>> $seqres.full
_check_scratch_xfs_features NEEDSREPAIR > /dev/null && \
echo "Repair failed to clear NEEDSREPAIR on the $allowed_writes writes test"
fi
# success, all done
echo Silence is golden.
status=0
exit
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