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zio_decompress_data always ASSERTs successful decompression

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This interferes with zdb_read_block trying all the decompression
algorithms when the 'd' flag is specified, as some are
expected to fail.  Also control the output when guessing
algorithms, try the more common compression types first, allow
specifying lsize/psize, and fix an uninitialized variable.

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Zuchowski <pzuchowski@datto.com>
Closes #9612
Closes #9630
This commit is contained in:
Paul Zuchowski
2019-12-10 18:51:58 -05:00
committed by Tony Hutter
parent d2233a08fa
commit 4d658bda32
6 changed files with 205 additions and 59 deletions
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module/zfs/zio_compress.c
-1
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@@ -159,7 +159,6 @@ zio_decompress_data(enum zio_compress c, abd_t *src, void *dst,
* the checksum. However, for extra protection (e.g. against bitflips
* in non-ECC RAM), we handle this error (and test it).
*/
ASSERT0(ret);
if (zio_decompress_fail_fraction != 0 &&
spa_get_random(zio_decompress_fail_fraction) == 0)
ret = SET_ERROR(EINVAL);