mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Wang Xiaoguang
a54bed2236
In original codes, if block size is 4096, fs size will be limited to 60MB. In such small fs, btrfs is not able to write 40MB data, because some space has been reserved internally, so the first _pwrite_byte in this test case will fail for enospc error. Also from this test case's test purpose, it tries to reflink a file that uses more than half of the fs space, so here we can just define fs size to be 256MB, the file to be reflinked to be 168MB. Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
96 lines
2.6 KiB
Bash
Executable File
96 lines
2.6 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 172
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#
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# Reflink a file that uses more than half of the space, then try to observe
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# ENOSPC while copy-on-writing the file via the page cache.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf $tmp.* $testdir1
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/attr
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_scratch_reflink
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_require_cp_reflink
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rm -f $seqres.full
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echo "Format and mount"
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_scratch_mkfs > $seqres.full 2>&1
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_scratch_mount >> $seqres.full 2>&1
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testdir=$SCRATCH_MNT/test-$seq
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mkdir $testdir
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echo "Reformat with appropriate size"
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umount $SCRATCH_MNT
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file_size=$((168 * 1024 * 1024))
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fs_size=$((256 * 1024 * 1024))
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_scratch_mkfs_sized $fs_size >> $seqres.full 2>&1
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_scratch_mount >> $seqres.full 2>&1
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rm -rf $testdir
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mkdir $testdir
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echo "Create a big file and reflink it"
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_pwrite_byte 0x61 0 $file_size $testdir/bigfile >> $seqres.full 2>&1
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_cp_reflink $testdir/bigfile $testdir/clonefile
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sync
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echo "Allocate the rest of the space"
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touch $testdir/file0 $testdir/file1
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_pwrite_byte 0x61 0 $fs_size $testdir/eat_my_space >> $seqres.full 2>&1
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sync
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echo "CoW the big file"
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out="$(_pwrite_byte 0x62 0 $file_size $testdir/bigfile 2>&1)"
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echo ${out} | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC"
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echo ${out} >> $seqres.full 2>&1
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echo ${out}
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echo "Remount and try CoW again"
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_scratch_cycle_mount
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out="$(_pwrite_byte 0x62 0 $file_size $testdir/bigfile 2>&1)"
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echo ${out} | grep -q "No space left on device" || echo "CoW should have failed with ENOSPC"
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echo ${out} >> $seqres.full 2>&1
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echo ${out}
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# success, all done
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status=0
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exit
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