mirror of
https://github.com/linux-apfs/apfstests.git
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85 lines
2.0 KiB
Bash
85 lines
2.0 KiB
Bash
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#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test 546
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#
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# Test when a fs is full we can still:
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# - Do buffered write into a unpopulated preallocated extent
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# - Clone the untouched part of that preallocated extent
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# - Fsync
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# - No data loss even power loss happens after fsync
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# All operations above should not fail.
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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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_cleanup_flakey
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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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. ./common/reflink
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. ./common/dmflakey
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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_xfs_io_command "falloc"
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_require_scratch_reflink
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_require_dm_target flakey
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_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full 2>&1
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_require_metadata_journaling $SCRATCH_DEV
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_init_flakey
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_mount_flakey
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# Create preallocated extent where we can write into
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$XFS_IO_PROG -f -c 'falloc 8k 64m' "$SCRATCH_MNT/foobar" >> $seqres.full
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# Use up all data space, to test later write-into-preallocate behavior
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_pwrite_byte 0x00 0 512m "$SCRATCH_MNT/padding" >> $seqres.full 2>&1
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# Sync to ensure that padding file reach disk so that at log recovery we
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# still have no data space
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sync
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# This should not fail
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_pwrite_byte 0xcd 1m 16m "$SCRATCH_MNT/foobar" >> $seqres.full
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# Do reflink here, we shouldn't use extra data space, thus it should not fail
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$XFS_IO_PROG -c "reflink ${SCRATCH_MNT}/foobar 8k 0 4k" "$SCRATCH_MNT/foobar" \
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>> $seqres.full
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# Checksum before power loss
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echo md5 before $(_md5_checksum "$SCRATCH_MNT/foobar")
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# Fsync to check if writeback is ok
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$XFS_IO_PROG -c 'fsync' "$SCRATCH_MNT/foobar"
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# Now emulate power loss
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_flakey_drop_and_remount
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# Checksum after power loss
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echo md5 after $(_md5_checksum "$SCRATCH_MNT/foobar")
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# success, all done
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status=0
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exit
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