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Filipe Manana 1b61fc81a5 generic: test for file fsync after moving it to a new parent directory

Test that if we move a file from a directory B to a directory A, replace
directory B with directory A, fsync the file and then power fail, after
mounting the filesystem the file has a single parent, named B and there
is no longer any directory with the name A.

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

  "Btrfs: fix wrong dentries after fsync of file that got its parent
   replaced"

This test passes on ext4, xfs and patched btrfs but it hangs on f2fs (the
fsck.f2fs process seems stuck).

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

2018-10-14 22:47:17 +08:00

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 QA output created by 510
 Filesystem content after power failure:
 SCRATCH_MNT/testdir:
 B
 SCRATCH_MNT/testdir/B:
 bar