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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 Red Hat, Inc. All Rights Reserved.
#
# FS QA Test No. 163
#
# XFS shrinkfs basic functionality test
#
# This test attempts to shrink with a small size (512K), half AG size and
# an out-of-bound size (agsize + 1) to observe if it works as expected.
#
. ./common/preamble
_begin_fstest auto quick growfs shrinkfs
# Import common functions.
. ./common/filter
test_shrink()
{
$XFS_GROWFS_PROG -D"$1" $SCRATCH_MNT >> $seqres.full 2>&1
ret=$?
_scratch_unmount
_check_scratch_fs
_scratch_mount
$XFS_INFO_PROG $SCRATCH_MNT 2>&1 | _filter_mkfs 2>$tmp.growfs >/dev/null
. $tmp.growfs
[ $ret -eq 0 -a $1 -eq $dblocks ]
}
# real QA test starts here
_supported_fs xfs
_require_scratch_xfs_shrink
echo "Format and mount"
# agcount = 1 is forbidden on purpose, and need to ensure shrinking to
# 2 AGs isn't feasible yet. So agcount = 3 is the minimum number now.
_scratch_mkfs -dsize="$((512 * 1024 * 1024))" -dagcount=3 2>&1 | \
tee -a $seqres.full | _filter_mkfs 2>$tmp.mkfs >/dev/null
. $tmp.mkfs
t_dblocks=$dblocks
_scratch_mount >> $seqres.full
echo "Shrink fs (small size)"
test_shrink $((t_dblocks-512*1024/dbsize)) || \
echo "Shrink fs (small size) failure"
echo "Shrink fs (half AG)"
test_shrink $((t_dblocks-agsize/2)) || \
echo "Shrink fs (half AG) failure"
echo "Shrink fs (out-of-bound)"
test_shrink $((t_dblocks-agsize-1)) && \
echo "Shrink fs (out-of-bound) failure"
[ $dblocks -ne $((t_dblocks-agsize/2)) ] && \
echo "dblocks changed after shrinking failure"
$XFS_INFO_PROG $SCRATCH_MNT >> $seqres.full
echo "*** done"
# success, all done
status=0
exit
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