]> www.infradead.org Git - users/jedix/linux-maple.git/commit
hpsa: correct skipping masked peripherals
authorDon Brace <don.brace@microsemi.com>
Fri, 1 Jul 2016 18:37:31 +0000 (13:37 -0500)
committerChuck Anderson <chuck.anderson@oracle.com>
Mon, 6 Mar 2017 20:17:44 +0000 (12:17 -0800)
commit2dabb2d7912523fedbb1c4b62de021543ca5dcdc
tree2a6c00702c200d34a3d901e5323c8bcde6a845e4
parent7f4339486db413221f47d920a7369a9777a2b46e
hpsa: correct skipping masked peripherals

The SA controller spins down RAID drive spares.

A REGNEWD event causes an inquiry to be sent to all physical
drives. This causes the SA controller to spin up the spare.

The controller suspends all I/O to a logical volume until
the spare is spun up. The spin-up can take over 50 seconds.

This can result in one or both of the following:
 - SML sends down aborts and resets to the logical volume
   and can cause the logical volume to be off-lined.
 - a negative impact on the logical volume's I/O performance
   each time a REGNEWD is triggered.

Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Orabug: 25605941
(cherry picked from commit 64ce60cab24603ac0fcd59c9fbc3be78f4c4d229)
Signed-off-by: Jack Vogel <jack.vogel@oracle.com>
drivers/scsi/hpsa.c