linux-stable.git/drivers/scsi/device_handler, branch linux-2.6.28.y

Commands needing to be retried require a complete re-initialization.

2008-12-12T15:04:26+00:00

The test-unit-ready portion of this patch was causing boots to fail on
my test machine (as in http://lkml.org/lkml/2008/12/5/161). With this
patch in place, the system is booting reliably.

Mike Anderson found the same problem in the hp_hw_start_stop code,
and I applied the same solution in cdrom_read_cdda_bpc.

Signed-off-by: Alan D. Brunelle 
Cc: Mike Anderson 
Signed-off-by: Jens Axboe

[SCSI] scsi_dh: Initialize path state to be passive when path is not owned

2008-10-23T16:42:11+00:00

Set the path state to be passive when we learn that the controller does
not own the path to the LUN.

This will avoid sending even a single i/o thru the passive path at the
probe time.

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

[SCSI] scsi_dh_alua: remove REQ_NOMERGE

2008-10-13T13:28:56+00:00

We do not need to set REQ_NOMERGE because when the module calls
blk_execute_rq -> blk_execute_rq_nowait, blk_execute_rq_nowait sets
it for us. This brings all the modules in sync for those bits.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] block: separate failfast into multiple bits.

2008-10-13T13:28:52+00:00

Multipath is best at handling transport errors. If it gets a device
error then there is not much the multipath layer can do. It will just
access the same device but from a different path.

This patch breaks up failfast into device, transport and driver errors.
The multipath layers (md and dm mutlipath) only ask the lower levels to
fast fail transport errors. The user of failfast, read ahead, will ask
to fast fail on all errors.

Note that blk_noretry_request will return true if any failfast bit
is set. This allows drivers that do not support the multipath failfast
bits to continue to fail on any failfast error like before. Drivers
like scsi that are able to fail fast specific errors can check
for the specific fail fast type. In the next patch I will convert
scsi.

Signed-off-by: Mike Christie 
Cc: Jens Axboe 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: suppress comparison warning

2008-10-03T17:11:51+00:00

On Mon, 2008-09-22 at 14:56 -0700, akpm@linux-foundation.org wrote:
> From: Andrew Morton 
>
> s390:
>
> drivers/scsi/device_handler/scsi_dh_emc.c: In function 'parse_sp_info_reply':
> drivers/scsi/device_handler/scsi_dh_emc.c:179: warning: comparison is always false due to limited range of data type
>
> because chars are unsigned, I assume.

Fix by making csdev->buffer explicitly an unsigned char and dropping
the < 0 test.

Signed-off-by: James Bottomley

[SCSI] scsi_dh: add Dell product information into rdac device handler

2008-10-03T17:11:51+00:00

Add Dell Powervault storage arrays into device list of rdac device
handler.

Signed-off-by: Yanqing Liu 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: no need to initialize rq->cmd with blk_get_request

2008-10-03T16:46:14+00:00

blk_get_request initializes rq->cmd (rq_init does) so the users don't
need to do that.

Signed-off-by: FUJITA Tomonori 
Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: make check_sense return ADD_TO_MLQUEUE

2008-08-29T14:13:51+00:00

Change scsi_dh check_sense functions to return ADD_TO_MLQUEUE
to allow retries to occur without restriction of blk_noretry_request
check.

Signed-off-by: Mike Anderson 
Acked-by: Chandra Seetharaman 
Signed-off-by: James Bottomley

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

2008-08-20T15:42:53+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (22 commits)
  [SCSI] ibmvfc: Driver version 1.0.2
  [SCSI] ibmvfc: Add details to async event log
  [SCSI] ibmvfc: Sanitize response lengths
  [SCSI] ibmvfc: Fix for lost async events
  [SCSI] ibmvfc: Fixup host state during reinit
  [SCSI] ibmvfc: Fix another hang on module removal
  [SCSI] ibmvscsi: Fixup desired DMA value for shared memory partitions
  [SCSI] megaraid_sas: remove sysfs dbg_lvl world writeable permissions
  [SCSI] qla2xxx: Update version number to 8.02.01-k7.
  [SCSI] qla2xxx: Explicitly tear-down vports during PCI remove_one().
  [SCSI] qla2xxx: Reference proper ha during SBR handling.
  [SCSI] qla2xxx: Set npiv_supported flag for FCoE HBAs.
  [SCSI] qla2xxx: Don't leak SG-DMA mappings while aborting commands.
  [SCSI] qla2xxx: Correct vport-state management issues during ISP-ABORT.
  [SCSI] qla2xxx: Correct synchronization of software/firmware fcport states.
  [SCSI] scsi_dh: Initialize lun_state in check_ownership()
  [SCSI] scsi_dh: Do not use scsilun in rdac hardware handler
  [SCSI] megaraid_sas: version and Documentation Update
  [SCSI] megaraid_sas: add new controllers (0x78 0x79)
  [SCSI] megaraid_sas: add the shutdown DCMD cmd to driver shutdown routine
  ...

[SCSI] scsi_dh: Initialize lun_state in check_ownership()

2008-08-16T15:13:34+00:00

lun_state need to be initialized inside check_ownership().

Signed-off-by: Chandra Seetharaman 
Signed-off-by: James Bottomley