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https://github.com/linux-apfs/apfstests.git
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Dave Chinner
1ff4192932
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
100 lines
3.4 KiB
Bash
Executable File
100 lines
3.4 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2016 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FSQA Test No. 119
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#
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# Test log tree replay when qgroups are enabled and orphan roots (deleted
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# snapshots) exist.
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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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_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/dmflakey
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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_require_dm_target flakey
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rm -f $seqres.full
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_scratch_mkfs >>$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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_run_btrfs_util_prog quota enable $SCRATCH_MNT
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# Create 2 directories with one file in one of them.
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# We use these just to trigger a transaction commit later, moving the file from
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# directory a to directory b and doing an fsync against directory a.
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mkdir $SCRATCH_MNT/a
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mkdir $SCRATCH_MNT/b
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touch $SCRATCH_MNT/a/f
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sync
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# Create our test file with 2 4K extents.
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$XFS_IO_PROG -f -s -c "pwrite -S 0xaa 0 8K" $SCRATCH_MNT/foobar | _filter_xfs_io
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# Create a snapshot and delete it. This doesn't really delete the snapshot
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# immediately, just makes it inaccessible and invisible to user space, the
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# snapshot is deleted later by a dedicated kernel thread (cleaner kthread)
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# which is woke up at the next transaction commit.
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# A root orphan item is inserted into the tree of tree roots, so that if a
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# power failure happens before the dedicated kernel thread does the snapshot
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# deletion, the next time the filesystem is mounted it resumes the snapshot
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# deletion.
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_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snap
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_run_btrfs_util_prog subvolume delete $SCRATCH_MNT/snap
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# Now overwrite half of the extents we wrote before. Because we made a snapshpot
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# before, which isn't really deleted yet (since no transaction commit happened
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# after we did the snapshot delete request), the non overwritten extents get
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# referenced twice, once by the default subvolume and once by the snapshot.
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$XFS_IO_PROG -c "pwrite -S 0xbb 4K 8K" $SCRATCH_MNT/foobar | _filter_xfs_io
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# Now move file f from directory a to directory b and fsync directory a.
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# The fsync on the directory a triggers a transaction commit (because a file
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# was moved from it to another directory) and the file fsync leaves a log tree
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# with file extent items to replay.
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mv $SCRATCH_MNT/a/f $SCRATCH_MNT/a/b
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$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/a
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$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/foobar
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echo "File digest before power failure:"
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md5sum $SCRATCH_MNT/foobar | _filter_scratch
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# Now simulate a power failure and mount the filesystem to replay the log tree.
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# After the log tree was replayed, we used to hit a BUG_ON() when processing
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# the root orphan item for the deleted snapshot. This is because when processing
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# an orphan root the code expected to be the first code inserting the root into
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# the fs_info->fs_root_radix radix tree, while in reallity it was the second
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# caller attempting to do it - the first caller was the transaction commit that
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# took place after replaying the log tree, when updating the qgroup counters.
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_flakey_drop_and_remount
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echo "File digest before after failure:"
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# Must match what he got before the power failure.
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md5sum $SCRATCH_MNT/foobar | _filter_scratch
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_unmount_flakey
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status=0
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exit
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