mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Christoph Hellwig
1a4485f2fa
Now that we run the test for all block device based file systems, there is no reason to keep it out of generic. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eryu Guan <guaneryu@gmail.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
145 lines
3.6 KiB
Bash
Executable File
145 lines
3.6 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2019 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test No. 011
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#
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# This test verifies that cgroup aware writeback properly accounts I/Os in
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# various scenarios. We perform reads/writes from different combinations of
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# cgroups and verify that pages are accounted against the group that brought
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# them into cache.
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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/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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echo $$ > $cgdir/cgroup.procs
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rmdir $cgdir/$seq-cg* > /dev/null 2>&1
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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/cgroup2
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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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# Modify as appropriate.
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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_cgroup2 io
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# cgroup v2 writeback is only support on block devices so far
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_require_block_device $SCRATCH_DEV
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smajor=$((0x`stat -L -c %t $SCRATCH_DEV`))
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sminor=$((0x`stat -L -c %T $SCRATCH_DEV`))
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cgdir=$CGROUP2_PATH
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iosize=$((1024 * 1024 * 8))
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# Check cgroup read/write charges against expected values. Allow for some
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# tolerance as different filesystems seem to account slightly differently.
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check_cg()
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{
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cgroot=$1
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cgname=$(basename $cgroot)
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expectedread=$2
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expectedwrite=$3
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rbytes=0
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wbytes=0
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iobytes=`cat $cgroot/io.stat | grep $smajor:$sminor`
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if [ $? == 0 ]; then
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rbytes=`echo $iobytes | awk '{ print $2 }' | \
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awk -F = '{ print $2 }'`
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wbytes=`echo $iobytes | awk '{ print $3 }' | \
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awk -F = '{ print $2 }'`
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fi
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_within_tolerance "read" $rbytes $expectedread 5% -v
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_within_tolerance "write" $wbytes $expectedwrite 5% -v
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}
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# Move current process to another cgroup.
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switch_cg()
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{
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mkdir -p $1
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echo $$ > $1/cgroup.procs
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}
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# Reset cgroup state for a new test.
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reset()
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{
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echo $$ > $cgdir/cgroup.procs
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rmdir $cgdir/$seq-cg* > /dev/null 2>&1
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$XFS_IO_PROG -fc "pwrite 0 $iosize" $SCRATCH_MNT/file \
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>> $seqres.full 2>&1
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_scratch_cycle_mount || _fail "mount failed"
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stat $SCRATCH_MNT/file > /dev/null
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}
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_scratch_mkfs >> $seqres.full 2>&1
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_scratch_mount
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echo "+io" > $cgdir/cgroup.subtree_control || _fail "subtree control"
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# Read and write from a single group.
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echo "read/write"
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reset
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switch_cg $cgdir/$seq-cg
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$XFS_IO_PROG -c "pread 0 $iosize" -c "pwrite 0 $iosize" -c fsync \
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$SCRATCH_MNT/file >> $seqres.full 2>&1
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switch_cg $cgdir
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$XFS_IO_PROG -c fsync $SCRATCH_MNT/file
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check_cg $cgdir/$seq-cg $iosize $iosize
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# Write from one cgroup then read and write from a second. Writes are charged to
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# the first group and nothing to the second.
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echo "write -> read/write"
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reset
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switch_cg $cgdir/$seq-cg
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$XFS_IO_PROG -c "pwrite 0 $iosize" $SCRATCH_MNT/file >> $seqres.full 2>&1
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switch_cg $cgdir/$seq-cg-2
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$XFS_IO_PROG -c "pread 0 $iosize" -c "pwrite 0 $iosize" $SCRATCH_MNT/file \
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>> $seqres.full 2>&1
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switch_cg $cgdir
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$XFS_IO_PROG -c fsync $SCRATCH_MNT/file
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check_cg $cgdir/$seq-cg 0 $iosize
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check_cg $cgdir/$seq-cg-2 0 0
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# Read from one cgroup, read & write from a second. Both reads and writes are
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# charged to the first group and nothing to the second.
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echo "read -> read/write"
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reset
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switch_cg $cgdir/$seq-cg
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$XFS_IO_PROG -c "pread 0 $iosize" $SCRATCH_MNT/file >> $seqres.full 2>&1
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switch_cg $cgdir/$seq-cg-2
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$XFS_IO_PROG -c "pread 0 $iosize" -c "pwrite 0 $iosize" $SCRATCH_MNT/file \
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>> $seqres.full 2>&1
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switch_cg $cgdir
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$XFS_IO_PROG -c fsync $SCRATCH_MNT/file
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check_cg $cgdir/$seq-cg $iosize $iosize
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check_cg $cgdir/$seq-cg-2 0 0
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echo "-io" > $cgdir/cgroup.subtree_control || _fail "subtree control"
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# success, all done
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status=0
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exit
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