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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2019 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test 190
#
# A general test to validate that balance and qgroups work correctly when
# balance needs to be resumed on mount.
#
. ./common/preamble
_begin_fstest auto quick replay balance qgroup
# Import common functions.
. ./common/filter
. ./common/dmlogwrites
# real QA test starts here
# Modify as appropriate.
_supported_fs btrfs
_require_scratch
# and we need extra device as log device
_require_log_writes
nr_files=512 # enough metadata to bump tree height
file_size=2048 # small enough to be inlined
_log_writes_init $SCRATCH_DEV
_log_writes_mkfs >> $seqres.full 2>&1
_log_writes_mount
$BTRFS_UTIL_PROG quota enable $SCRATCH_MNT >> $seqres.full
$BTRFS_UTIL_PROG quota rescan -w $SCRATCH_MNT >> $seqres.full
# Create enough metadata for later balance
for ((i = 0; i < $nr_files; i++)); do
_pwrite_byte 0xcd 0 $file_size $SCRATCH_MNT/file_$i > /dev/null
done
# Flush delalloc so that balance has work to do.
sync
# Balance metadata so we will have at least one transaction committed with
# valid reloc tree, and hopefully another commit with orphan reloc tree.
_run_btrfs_balance_start -f -m $SCRATCH_MNT >> $seqres.full
_log_writes_unmount
_log_writes_remove
cur=$(_log_writes_find_next_fua 0)
echo "cur=$cur" >> $seqres.full
while [ ! -z "$cur" ]; do
_log_writes_replay_log_range $cur $SCRATCH_DEV >> $seqres.full
# Test that no crashes happen or any other kind of failure.
_scratch_mount
_scratch_unmount
# Don't trigger fsck here, as relocation get paused,
# at that transistent state, qgroup number may differ
# and cause false alert.
prev=$cur
cur=$(_log_writes_find_next_fua $(($cur + 1)))
[ -z "$cur" ] && break
done
# Now the fs has finished its balance and qgroup should be consistent.
# Fstest will automatically check the fs and btrfs check will report
# any qgroup inconsistent if something went wrong.
echo "Silence is golden"
# success, all done
status=0
exit
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