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reflink: make error reporting consistent when simulating EIO

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When we're using dm-error to simulate failed devices, we don't really
know if the write or the fdatasync is going to receive the EIO.  For
tests that make a single (failed) write attempt and never retry, it's
sufficient to check that the file md5 doesn't change after recovery.
For tests that /do/ retry the write, we should capture the entire output
and just look for the word error instead of enshrining the exact perror
message (filename/function call and everything) in the golden output.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Darrick J. Wong
2017-01-04 17:05:08 -08:00
committed by Eryu Guan
parent eaa652fbb2
commit c4288aec3c
22 changed files with 33 additions and 29 deletions
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tests/generic/271.out
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1886e67cf8783e89ce6ddc5bb09a3944 SCRATCH_MNT/test-271/file1
1886e67cf8783e89ce6ddc5bb09a3944 SCRATCH_MNT/test-271/file2
CoW and unmount
pwrite: Input/output error
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1886e67cf8783e89ce6ddc5bb09a3944 SCRATCH_MNT/test-271/file1
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