mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Amir Goldstein
29e399dae8
Overlayfs hardlink test are expected to fail if overlayfs does not support the inodes index feature, so don't un them if kernel does not support the feature. If the feature is supported, enable it with the index=on mount option for the hardlink tests, regardless of the build time default determined by kernel config option CONFIG_OVERLAY_FS_INDEX. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
153 lines
3.5 KiB
Bash
Executable File
153 lines
3.5 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test 033
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#
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# Test nlink accounting of overlay hardlinks.
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#
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# nlink of overlay inode should account for the union of lower and upper
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# hardlinks.
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#
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#-----------------------------------------------------------------------
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# Copyright (C) 2017 CTERA Networks. All Rights Reserved.
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# Author: Amir Goldstein <amir73il@gmail.com>
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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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#
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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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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 -f $tmp.*
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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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs overlay
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_supported_os Linux
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_require_scratch
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_require_scratch_feature index
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report_nlink()
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{
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when=$1
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[ $DCACHETEMP != cold ] || echo 2 > /proc/sys/vm/drop_caches
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# check nlink with warm dcache after overlay modification
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# List <nlink> <name>
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echo "== $when - $DCACHETEMP dcache =="
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for f in $HARDLINKS; do
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_ls_l $SCRATCH_MNT/$f | awk '{ print $2, $9 }' | _filter_scratch
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done
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}
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# Create lower hardlinks
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create_hardlinks()
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{
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lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
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mkdir -p $lowerdir
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touch $lowerdir/0
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ln $lowerdir/0 $lowerdir/1
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ln $lowerdir/0 $lowerdir/2
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ln $lowerdir/0 $lowerdir/3
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}
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test_hardlinks()
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{
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HARDLINKS=`seq 0 3`
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report_nlink "all lower"
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# Unlink lower hardlink
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rm $SCRATCH_MNT/0
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HARDLINKS=`seq 1 3`
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report_nlink "unlink lower"
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# Link to lower hardlink
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ln $SCRATCH_MNT/3 $SCRATCH_MNT/4
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HARDLINKS=`seq 1 4`
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report_nlink "link lower"
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# Link to upper hardlink
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ln $SCRATCH_MNT/4 $SCRATCH_MNT/5
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HARDLINKS=`seq 1 5`
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report_nlink "link upper"
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# Rename over lower hardlink
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touch $SCRATCH_MNT/new
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mv $SCRATCH_MNT/new $SCRATCH_MNT/1
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HARDLINKS=`seq 2 5`
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report_nlink "cover lower"
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# Unlink upper hardlink
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rm $SCRATCH_MNT/5
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HARDLINKS=`seq 2 4`
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report_nlink "unlink upper"
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# Rename over upper hardlink
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touch $SCRATCH_MNT/new
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mv $SCRATCH_MNT/new $SCRATCH_MNT/4
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HARDLINKS=`seq 2 3`
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report_nlink "cover upper"
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# Unlink last upper (union still has one lower)
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rm $SCRATCH_MNT/3
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HARDLINKS=2
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report_nlink "unlink last upper"
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# Unlink last lower and drop union nlink to zero (and hopefully not below)
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rm $SCRATCH_MNT/2
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# Verify that orphan index is cleaned when dropping nlink to zero
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ls $OVL_BASE_SCRATCH_MNT/$OVL_WORK/index
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}
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# Remove all files from previous tests
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_scratch_mkfs
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# Create lower hardlinks
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create_hardlinks
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# Enable overlay index feature to prevent breaking hardlinks on copy up
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_scratch_mount -o index=on
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# Test hardlinks with warm dcache
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DCACHETEMP=warm
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test_hardlinks
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# Reset to lower hardlinks
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_scratch_unmount
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_scratch_mkfs
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create_hardlinks
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_scratch_mount -o index=on
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# Test hardlinks with cold dcache
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DCACHETEMP=cold
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test_hardlinks
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status=0
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exit
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