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async_tx: raid6 recovery self test

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Port drivers/md/raid6test/test.c to use the async raid6 recovery
routines.  This is meant as a unit test for raid6 acceleration drivers.  In
addition to the 16-drive test case this implements tests for the 4-disk and
5-disk special cases (dma devices can not generically handle less than 2
sources), and adds a test for the D+Q case.

Reviewed-by: Andre Noll <maan@systemlinux.org>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2009-07-14 12:20:37 -07:00
parent 58691d64c4
commit cb3c82992f
3 changed files with 255 additions and 0 deletions
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13
drivers/md/Kconfig
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@ -155,6 +155,19 @@ config MD_RAID456
config MD_RAID6_PQ
tristate
config ASYNC_RAID6_TEST
tristate "Self test for hardware accelerated raid6 recovery"
depends on MD_RAID6_PQ
select ASYNC_RAID6_RECOV
---help---
This is a one-shot self test that permutes through the
recovery of all the possible two disk failure scenarios for a
N-disk array. Recovery is performed with the asynchronous
raid6 recovery routines, and will optionally use an offload
engine if one is available.
If unsure, say N.
config MD_MULTIPATH
tristate "Multipath I/O support"
depends on BLK_DEV_MD