linux/drivers/scsi/device_handler, branch v2.6.32

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

2009-10-02T14:45:09Z

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

[SCSI] scsi_dh_rdac: changes for rdac debug logging

2009-09-12T14:35:31Z

Patch to add debugging stuff for rdac device handler. - Added a bit mask "module parameter" rdac_logging with 2 bits for each type of logging. - currently defined only two types of logging(failover and sense logging). Can be enhanced later if required. - By default only failover logging is enabled which is equivalent of current logging. Signed-off-by: Babu Moger Reviewed-by: Vijay Chauhan Reviewed-by: Bob Stankey Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: changes to collect the rdac debug information during the initialization

2009-09-12T14:35:31Z

Adding the code to read the debug information during initialization. This patch collects the information about storage and controllers during rdac_activate. Signed-off-by: Babu Moger Reviewed-by: Vijay Chauhan Reviewed-by: Bob Stankey Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: move the init code from rdac_activate to rdac_bus_attach

2009-09-12T14:35:30Z

Moving the initialization code from rdac_activate to rdac_bus_attach which is more efficient. We don't have to collect all the information during every activate. Signed-off-by: Babu Moger Reviewed-by: Vijay Chauhan Reviewed-by: Bob Stankey Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: Add support for Sun StorageTek ST2500, ST2510 and ST2530

2009-09-12T14:35:25Z

These storage arrays can use RDAC when configured with 'linux' as the initiator. http://www.sun.com/storage/disk_systems/workgroup/2500/ http://www.sun.com/storage/disk_systems/workgroup/2510/ http://www.sun.com/storage/disk_systems/workgroup/2530/ Signed-off-by: Charlie Brady Reviewed-by: Chandra Seetharaman Signed-off-by: James Bottomley

[SCSI] scsi_dh_rdac: add support for next generation of Dell PV array

2009-09-05T13:46:09Z

This patch is to add DM support for next generation of Dell PowerVault storage array. Signed-off-by: Yanqing Liu Acked-by: Chandra Seetharaman Signed-off-by: James Bottomley

[SCSI] scsi_dh: add two SUN devices to the list of devices supported by default

2009-08-22T22:52:23Z

Reported-by: Rice Brown Signed-Off-by: Chandra Seetharaman Signed-off-by: James Bottomley

[SCSI] scsi_dh: Provide set_params interface in emc device handler

2009-08-22T22:52:14Z

Handle the parameters provided by user thru multipath. This handler expects only 2 parameters and their value can either be 0 or 1. This code originates from the old dm-emc.c file. Appropriate changes have been made to make it work in the new design. Reported-by: Eddie Williams Signed-off-by: Chandra Seetharaman Tested-by: Eddie Williams Signed-off-by: James Bottomley Signed-off-by: James Bottomley

[SCSI] scsi_dh: add the interface scsi_dh_set_params()

2009-08-22T22:52:14Z

When we moved the device handler functionality from dm layer to SCSI layer we dropped the parameter functionality. This path adds an interface to scsi dh layer to set device handler parameters. Basically, multipath layer need to create a string with all the parameters and call scsi_dh_set_params() after it called scsi_dh_attach() on a device. If a device handler provides such an interface it will handle the parameters as it expects them. Reported-by: Eddie Williams Signed-off-by: Chandra Seetharaman Tested-by: Eddie Williams Signed-off-by: James Bottomley Signed-off-by: James Bottomley

[SCSI] ALUA: send STPG if explicit and implicit is supported

2009-08-22T22:52:01Z

alua_activate only sends a STPG if only explicit is suppored. As a result, for EMC targets that support both we end up doing a implicit failover when X commands are finally sent to the other SP. This patch does a AND on the h->tpgs, so we do a explicit failover right away. Signed-off-by: Mike Christie Signed-off-by: James Bottomley Signed-off-by: James Bottomley