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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2023 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test 286
#
# Make sure btrfs dev-replace on missing device won't cause data corruption
# for NODATASUM data.
#
. ./common/preamble
_begin_fstest auto replace
. ./common/filter
_supported_fs btrfs
_require_command "$WIPEFS_PROG" wipefs
_btrfs_get_profile_configs replace-missing
_require_fssum
_require_scratch_dev_pool 5
_scratch_dev_pool_get 4
_spare_dev_get
workload()
{
local profile=$1
local victim="$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $2}')"
echo "=== Profile: $profile ===" >> $seqres.full
rm -f $tmp.fssum
_scratch_pool_mkfs "$profile" >> $seqres.full 2>&1
# Use nodatasum mount option, so all data won't have checksum.
_scratch_mount -o nodatasum
$FSSTRESS_PROG -p 10 -n 200 -d $SCRATCH_MNT >> $seqres.full
sync
# Generate fssum for later verification, here we only care
# about the file contents, thus we don't bother metadata at all.
$FSSUM_PROG -n -d -f -w $tmp.fssum $SCRATCH_MNT
_scratch_unmount
# Wipe devid 2
$WIPEFS_PROG -a $victim >> $seqres.full 2>&1
# Mount the fs with the victim device missing
_scratch_mount -o degraded,nodatasum
# Verify no data corruption first.
echo "=== Verify the contents before replace ===" >> $seqres.full
$FSSUM_PROG -r $tmp.fssum $SCRATCH_MNT >> $seqres.full 2>&1
# Replace the missing device
$BTRFS_UTIL_PROG replace start -Bf 2 $SPARE_DEV $SCRATCH_MNT >> $seqres.full
# Drop all cache to make sure later read are all from the disks
echo 3 > /proc/sys/vm/drop_caches
# Re-check the file contents
echo "=== Verify the contents after replace ===" >> $seqres.full
$FSSUM_PROG -r $tmp.fssum $SCRATCH_MNT >> $seqres.full 2>&1
_scratch_unmount
}
for t in "${_btrfs_profile_configs[@]}"; do
workload "$t"
done
_spare_dev_put
_scratch_dev_pool_put
echo "Silence is golden"
# success, all done
status=0
exit
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