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generic: test for fsync after adding hard links

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Test that if we add hard links (in the same directory) to two files and
then fsync only one of the files, after the fsync log/journal is replayed
all the links exist and the filesystem metadata (directory and file
inodes) is in a consistent state.

This test is motivated by a bug found in btrfs that is fixed by linux
kernel patch titled:

  "Btrfs: fix stale directory entries after fsync log replay"

Verified against ext3/4, xfs, f2fs and reiserfs on a 4.1 linux kernel.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Filipe Manana
2015-08-04 14:10:49 +10:00
committed by Dave Chinner
parent a022d3128a
commit 5b415d2be5
3 changed files with 103 additions and 0 deletions
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tests/generic/104.out
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QA output created by 104
Link count for file foo: 2
Link count for file bar: 2