mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
cf89aed924
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
117 lines
2.5 KiB
Bash
Executable File
117 lines
2.5 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2017 Red Hat Inc. All Rights Reserved.
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#
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# FS QA Test 464
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#
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# Run delalloc writes & append writes & non-data-integrity syncs concurrently
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# to test the race between block map change vs writeback.
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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 $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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MAXFILES=200
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BLOCK_SZ=65536
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LOOP_CNT=10
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LOOP_TIME=5
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PROC_CNT=16
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stop=$tmp.stop
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# get a random file to work on
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getfile()
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{
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echo $SCRATCH_MNT/$((RANDOM % MAXFILES))
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}
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# delalloc write a relative big file to get enough dirty pages to be written
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# back, and XFS needs big enough file to trigger speculative preallocations, so
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# freeing these eofblocks could change the extent record
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do_write()
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{
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local blockcount=$((RANDOM % 100))
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local filesize=$((blockcount * BLOCK_SZ))
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$XFS_IO_PROG -ftc "pwrite -b $BLOCK_SZ 0 $filesize" `getfile` \
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>/dev/null 2>&1
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}
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# append another dirty page to the file, the writeback might pick it up too if
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# the file is already under writeback
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do_append()
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{
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echo "test string" >> `getfile`
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}
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# issue WB_SYNC_NONE writeback with the '-w' option of sync_range xfs_io
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# command, so that the last dirty page from append write can be picked up in
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# this writeback cycle. This is not mandatory but could help reproduce XFS
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# corruption more easily.
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do_writeback()
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{
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$XFS_IO_PROG -c "sync_range -w 0 0" `getfile` >/dev/null 2>&1
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}
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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# do fsck after each iteration in test
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_require_scratch_nocheck
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_require_xfs_io_command "sync_range"
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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# loop for $LOOP_CNT iterations, and each iteration starts $PROC_CNT processes
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# for each operation and runs for $LOOP_TIME seconds, and check filesystem
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# consistency after each iteration
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for i in `seq 1 $LOOP_CNT`; do
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rm -f $stop
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for j in `seq 1 $PROC_CNT`; do
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while [ ! -e $stop ]; do
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do_write
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done &
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while [ ! -e $stop ]; do
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do_append
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done &
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while [ ! -e $stop ]; do
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do_writeback
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done &
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done
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sleep $LOOP_TIME
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touch $stop
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wait
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_scratch_unmount
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# test exits here if fs is inconsistent
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_check_scratch_fs
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_scratch_mount
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done
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echo "Silence is golden"
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# success, all done
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status=0
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exit
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