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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Oracle. All Rights Reserved.
#
# FS QA Test 151
#
# Test if it's losing data chunk's raid profile after 'btrfs device
# remove'.
#
# The fix is
# Btrfs: avoid losing data raid profile when deleting a device
#
. ./common/preamble
_begin_fstest auto quick volume
. ./common/filter
_supported_fs btrfs
_require_scratch
_require_scratch_dev_pool 3
_require_btrfs_dev_del_by_devid
_check_minimal_fs_size $(( 1024 * 1024 * 1024 ))
# We need exactly 3 disks to form a fixed stripe layout for this test.
_scratch_dev_pool_get 3
# create raid1 for data
_scratch_pool_mkfs "-d raid1 -b 1G" >> $seqres.full 2>&1
# we need an empty data chunk, so $(_btrfs_no_v1_cache_opt) is required.
_scratch_mount $(_btrfs_no_v1_cache_opt)
# if data chunk is empty, 'btrfs device remove' can change raid1 to
# single.
$BTRFS_UTIL_PROG device delete 2 $SCRATCH_MNT >> $seqres.full 2>&1
# save btrfs filesystem df output for debug purpose
$BTRFS_UTIL_PROG filesystem df $SCRATCH_MNT 2>&1 | \
tee -a $seqres.full | $AWK_PROG -F ':' '/Data,/ {print $1}'
_scratch_dev_pool_put
# success, all done
status=0
exit
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