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| author | Mike Miller <mike.miller@hp.com> | 2008-08-04 11:54:51 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-08-06 12:30:03 +0200 |
| commit | a72da29b6cbc5cf918567f2a0d76df6871e94b01 (patch) | |
| tree | 1ec0caea10895d9265ee7769cffea09e808c378e /drivers/block/cciss.h | |
| parent | f7108f91cdcaca07c6a99777b2724093294f36ee (diff) | |
| download | lwn-a72da29b6cbc5cf918567f2a0d76df6871e94b01.tar.gz lwn-a72da29b6cbc5cf918567f2a0d76df6871e94b01.zip | |
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>
Diffstat (limited to 'drivers/block/cciss.h')
| -rw-r--r-- | drivers/block/cciss.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h index b70988dd33ec..24a7efa993ab 100644 --- a/drivers/block/cciss.h +++ b/drivers/block/cciss.h @@ -39,6 +39,8 @@ typedef struct _drive_info_struct *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 |