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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
afeb3b711c
So it turns out that overlayfs can't pass FS_IOC_SHUTDOWN to the lower
filesystems and so xfstests works around this by creating shutdown
helpers for the scratch fs to direct the shutdown ioctl to wherever it
needs to go to shut down the filesystem -- SCRATCH_MNT on normal
filesystems and OVL_BASE_SCRATCH_MNT when -overlay is enabled. This
means that t_open_tmpfiles cannot simply use one of the open tempfiles
to shut down the filesystem.
Commit f8f5774722 tried to "fix" this by ripping the shutdown code out,
but this made the tests useless. Fix this instead by creating a
xfstests helper to return a path that can be used to shut down the
filesystem and then pass that path to t_open_tmpfiles so that we can
shut down the filesystem when overlayfs is enabled.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
66 lines
1.7 KiB
Bash
Executable File
66 lines
1.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2019 Oracle, Inc. All Rights Reserved.
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#
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# FS QA Test No. 530
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#
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# Stress test creating a lot of unlinked O_TMPFILE files and recovering them
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# after a crash, checking that we don't blow up the filesystem. This is sort
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# of a performance test for the xfs unlinked inode backref patchset, but it
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# applies to most other filesystems.
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#
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# Use only a single CPU to test the single threaded situation.
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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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testfile=$TEST_DIR/$seq.txt
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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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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_scratch
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_require_scratch_shutdown
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_require_test_program "t_open_tmpfiles"
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rm -f $seqres.full
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_scratch_mkfs >> $seqres.full 2>&1
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_scratch_mount
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# Set ULIMIT_NOFILE to min(file-max / 2, 50000 files per LOAD_FACTOR)
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# so that this test doesn't take forever or OOM the box
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max_files=$((50000 * LOAD_FACTOR))
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max_allowable_files=$(( $(cat /proc/sys/fs/file-max) / 2 ))
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test $max_allowable_files -gt 0 && test $max_files -gt $max_allowable_files && \
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max_files=$max_allowable_files
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ulimit -n $max_files
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# Open a lot of unlinked files
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echo create >> $seqres.full
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$here/src/t_open_tmpfiles $SCRATCH_MNT $(_scratch_shutdown_handle) >> $seqres.full
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# Unmount to prove that we can clean it all
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echo umount >> $seqres.full
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before=$(date +%s)
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_scratch_unmount
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after=$(date +%s)
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echo "Unmount took $((after - before))s." >> $seqres.full
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# Mount so that we can run the usual checks
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echo silence is golden
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_scratch_mount
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status=0
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exit
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