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|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2019 Facebook. All Rights Reserved.
#
# FS QA Test 196
#
# Test multi subvolume fsync to test a bug where we'd end up pointing at a block
# we haven't written. This was fixed by the patch
#
# btrfs: fix incorrect updating of log root tree
#
# Will do log replay and check the filesystem.
#
. ./common/preamble
_begin_fstest auto metadata log volume
fio_config=$tmp.fio
# Override the default cleanup function.
_cleanup()
{
cd /
_log_writes_cleanup &> /dev/null
_dmthin_cleanup
rm -f $tmp.*
}
. ./common/filter
. ./common/dmthin
. ./common/dmlogwrites
_supported_fs btrfs
# Use thin device as replay device, which requires $SCRATCH_DEV
_require_scratch_nocheck
# and we need extra device as log device
_require_log_writes
_require_dm_target thin-pool
cat >$fio_config <<EOF
[global]
readwrite=write
fallocate=none
bs=4k
fsync=1
size=128k
EOF
for i in $(seq 0 49); do
echo "[foo$i]" >> $fio_config
echo "filename=$SCRATCH_MNT/$i/file" >> $fio_config
done
_require_fio $fio_config
cat $fio_config >> $seqres.full
# Use a thin device to provide deterministic discard behavior. Discards are used
# by the log replay tool for fast zeroing to prevent out-of-order replay issues.
_dmthin_init
_log_writes_init $DMTHIN_VOL_DEV
_log_writes_mkfs >> $seqres.full 2>&1
_log_writes_mark mkfs
_log_writes_mount
# First create all the subvolumes
for i in $(seq 0 49); do
$BTRFS_UTIL_PROG subvolume create "$SCRATCH_MNT/$i" > /dev/null
done
$FIO_PROG $fio_config > /dev/null 2>&1
_log_writes_unmount
_log_writes_remove
prev=$(_log_writes_mark_to_entry_number mkfs)
[ -z "$prev" ] && _fail "failed to locate entry mark 'mkfs'"
cur=$(_log_writes_find_next_fua $prev)
[ -z "$cur" ] && _fail "failed to locate next FUA write"
while [ ! -z "$cur" ]; do
_log_writes_replay_log_range $cur $DMTHIN_VOL_DEV >> $seqres.full
# We need to mount the fs because btrfsck won't bother checking the log.
_dmthin_mount
_dmthin_check_fs
prev=$cur
cur=$(_log_writes_find_next_fua $(($cur + 1)))
[ -z "$cur" ] && break
done
echo "Silence is golden"
# success, all done
status=0
exit
|
