linux-stable.git/drivers/scsi/device_handler, branch linux-2.6.33.y

scsi_dh_alua: fix deadlock in stpg_endio

2011-03-21T19:45:51+00:00

commit ed0f36bc5719b25659b637f80ceea85494b84502 upstream.

The use of blk_execute_rq_nowait() implies __blk_put_request() is needed
in stpg_endio() rather than blk_put_request() -- blk_finish_request() is
called with queue lock already held.

Signed-off-by: Joseph Gruher 
Signed-off-by: Ilgu Hong 
Signed-off-by: Mike Snitzer 
Signed-off-by: James Bottomley 
Signed-off-by: Greg Kroah-Hartman

scsi_dh_alua: Add IBM Power Virtual SCSI ALUA device to dev list

2011-03-21T19:45:08+00:00

commit 22963a37b3437a25812cc856afa5a84ad4a3f541 upstream.

Adds IBM Power Virtual SCSI ALUA devices to the ALUA device handler.

Signed-off-by: Brian King 
Signed-off-by: James Bottomley 
Cc: maximilian attems 
Signed-off-by: Greg Kroah-Hartman

scsi_dh_alua: add netapp to dev list

2011-03-21T19:45:08+00:00

commit cd4a8814d44672bd2c8f04a472121bfbe193809c upstream.

Newer Netapp target software supports ALUA, so
this patch adds them to the scsi_dev_alua dev list.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley 
Cc: maximilian attems 
Signed-off-by: Greg Kroah-Hartman

[SCSI] scsi_dh_rdac: Add two new IBM devices to rdac_dev_list

2009-12-10T14:54:10+00:00

This patch adds two new IBM storage devices which can use rdac device handlers.

Signed-off-by: Babu Moger 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: create sysfs file, dh_state for all SCSI disk devices

2009-12-04T18:01:29+00:00

Create the sysfs file, dh_state even if the new SCSI device is not
in the any of the device handler's internal lists.

Signed-Off-by: Chandra Seetharaman 
Acked-by: Hannes Reinecke 
Signed-off-by: James Bottomley

[SCSI] scsi_dh: Make alua hardware handler's activate() async

2009-12-04T18:00:48+00:00

Make the activate function asynchronous by using blk_execute_rq_nowait()

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

[SCSI] scsi_dh: Make hp hardware handler's activate() async

2009-12-04T18:00:47+00:00

Make the activate function asynchronous by using blk_execute_rq_nowait()

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

[SCSI] scsi_dh: Make rdac hardware handler's activate() async

2009-12-04T18:00:47+00:00

Batch up MODE_SELECT in rdac device handler.

LSI RDAC storage has the capability of handling mode selects for
multiple luns in a same command. Make use of that ability to send
as few MODE SELECTs as possible to the storage controller as possible.

This patch creates a work queue and queues up activate requests
when a MODE SELECT is sent down the wire. When that MODE SELECT
completes, it compiles queued up activate requests for multiple
luns into a single MODE SELECT.

This reduces the time to do failover/failback of large number of LUNS.

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

[SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronous

2009-12-04T18:00:46+00:00

Make scsi_dh_activate() function asynchronous, by taking in two additional
parameters, one is the callback function and the other is the data to call
the callback function with.

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

[SCSI] scsi_dh_rdac: Fix for returning correct mode select cmd return info

2009-10-02T14:45:09+00:00

The function mode_select_handle_sense returns SCSI_DH_OK even when there is a sense code which is incorrect. Removing it so that it returns SCSI_DH_IO when there is sense that is not handled by this function.

Signed-off-by: Babu Moger 
Reviewed-by: Vijay Chauhan 
Reviewed-by: Bob Stankey 
Reviewed-by: Chandra Seetharaman 
Signed-off-by: James Bottomley