cciss: make rebuild_lun_table behave better
This patch makes the rebuild_lun_table smart enough to not rip a logical
volume out from under the OS. Without this fix if a customer is running
hpacucli to monitor their storage the driver will blindly remove and re-add
the disks whenever the utility calls the CCISS_REGNEWD ioctl. Unfortunately,
both hpacucli and ACUXE call the ioctl repeatedly. Customers have reported
IO coming to a standstill. Calling the ioctl is the problem, this patch is
the fix.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cca.cpqcorp.net>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index b70988d..24a7efa 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -39,6 +39,8 @@
*to prevent it from being opened or it's queue
*from being started.
*/
+ __u8 serial_no[16]; /* from inquiry page 0x83, */
+ /* not necc. null terminated. */
} drive_info_struct;
#ifdef CONFIG_CISS_SCSI_TAPE