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| author | Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com> | 2013-06-18 17:02:07 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-06-26 18:01:42 -0700 |
| commit | c5bebd829dd95602c15f8da8cc50fa938b5e0254 (patch) | |
| tree | 1d8bb0abb290d0e8fc4138806a4da39dffae1472 /include/scsi | |
| parent | ed7bd6612e67103f5ee4d8cfffe80cea6df096b9 (diff) | |
| download | linux-c5bebd829dd95602c15f8da8cc50fa938b5e0254.tar.gz linux-c5bebd829dd95602c15f8da8cc50fa938b5e0254.tar.bz2 linux-c5bebd829dd95602c15f8da8cc50fa938b5e0254.zip | |
[SCSI] aacraid: Fix for arrays are going offline in the system. System hangs
One of the customer had reported that the set of raid logical arrays will
become unavailable (I/O offline) after a long hours of IO stress test. The OS
wouldn`t be accessible afterwards and require a hard reset.
This driver patch has a fix for race condition between the doorbell and the
circular buffer. The driver is modified to do an extra read after clearing the
doorbell in case there had been a completion posted during the small timing
window.
With this fix, we ran IO stress for ~13 days. There were no IO failures.
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi')
0 files changed, 0 insertions, 0 deletions