Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
scsi: megaraid_sas: Early detection of VD deletion through RaidMap up…
…date [ Upstream commit ae6874b ] Consider the case where a VD is deleted and the targetID of that VD is assigned to a newly created VD. If the sequence of deletion/addition of VD happens very quickly there is a possibility that second event (VD add) occurs even before the driver processes the first event (VD delete). As event processing is done in deferred context the device list remains the same (but targetID is re-used) so driver will not learn the VD deletion/additon. I/Os meant for the older VD will be directed to new VD which may lead to data corruption. Make driver detect the deleted VD as soon as possible based on the RaidMap update and block further I/O to that device. Link: https://lore.kernel.org/r/20210528131307.25683-4-chandrakanth.patil@broadcom.com Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
- Loading branch information
Showing
3 changed files
with
92 additions
and
9 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters