mirror of
https://github.com/linux-apfs/apfstests.git
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Dave Chinner
cf89aed924
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
85 lines
2.4 KiB
Bash
Executable File
85 lines
2.4 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test No. 034
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#
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# This test is motivated by a bug found in btrfs when replaying a directory
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# from the fsync log. The issue was that if a directory entry is both found
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# in the persisted metadata and in the fsync log, at log replay time the
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# directory got set with a wrong i_size. This had the consequence of not being
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# able to rmdir empty directories (failed with errno ENOTEMPTY).
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# This was fixed in btrfs with the following linux kernel patch:
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#
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# Btrfs: fix directory recovery from fsync log
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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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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_flakey
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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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 generic
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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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mkdir $SCRATCH_MNT/test_dir
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touch $SCRATCH_MNT/test_dir/foo
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# Invoke sync here because it's necessary to trigger the original bug in btrfs.
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# The intention is that at log recovery time we have a dir entry for 'foo' both
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# in the fs/subvol tree and in the log tree - this is necessary to trigger the
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# bug on btrfs.
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sync
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touch $SCRATCH_MNT/test_dir/bar
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$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/test_dir
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$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/test_dir/bar
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# In the original btrfs bug, log replay would update the directory's inode
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# i_size incorrectly - it would sum again the size of dentry 'foo' (3) to
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# the inode's i_size, which is incorrect because the dentry was already
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# persisted before (in the fs/subvol tree).
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_flakey_drop_and_remount
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[ -f $SCRATCH_MNT/test_dir/foo ] || echo "file foo is missing"
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[ -f $SCRATCH_MNT/test_dir/bar ] || echo "file bar is missing"
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rm -f $SCRATCH_MNT/test_dir/foo
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rm -f $SCRATCH_MNT/test_dir/bar
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# In btrfs removing all entries from a directory should set the directory's
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# inode i_size to 0, but with this bug that didn't happen and this made
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# an rmdir fail with errno ENOTEMPTY (even though the directory had no more
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# entries in it).
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rmdir $SCRATCH_MNT/test_dir
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[ -d $SCRATCH_MNT/test_dir ] && echo "rmdir didn't succeed"
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_unmount_flakey
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echo "Silence is golden"
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status=0
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exit
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