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linux/drivers/scsi/device_handler/Kconfig

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[SCSI] scsi_dh: add infrastructure for SCSI Device Handlers Some of the storage devices (that can be accessed through multiple paths), do need some special handling for 1. Activating the passive path of the storage access. 2. Decode and handle the special sense codes returned by the devices. 3. Handle the I/Os being sent to the passive path, especially during the device probe time. when accessed through multiple paths. As of today this special device handling is done at the dm-multipath layer using dm-handlers. That works well for (1); for (2) to be handled at dm layer, scsi sense information need to be exported from SCSI to dm-layer, which is not very attractive; (3) cannot be done at all at the dm layer. Device handler has been moved to SCSI mainly to handle (2) and (3) properly. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-05-01 23:49:46 +02:00
#
# SCSI Device Handler configuration
#
menuconfig SCSI_DH
tristate "SCSI Device Handlers"
depends on SCSI
default n
help
SCSI Device Handlers provide device specific support for
devices utilized in multipath configurations. Say Y here to
select support for specific hardware.
[SCSI] scsi_dh: add lsi rdac device handler This patch provides the device handler to support the LSI RDAC SCSI based storage devices. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-05-01 23:49:52 +02:00
config SCSI_DH_RDAC
tristate "LSI RDAC Device Handler"
depends on SCSI_DH
help
If you have a LSI RDAC select y. Otherwise, say N.
[SCSI] scsi_dh: add hp sw device handler This patch provides the device handler to support the older hp boxes which cannot be upgraded. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-05-01 23:49:59 +02:00
config SCSI_DH_HP_SW
tristate "HP/COMPAQ MSA Device Handler"
depends on SCSI_DH
help
If you have a HP/COMPAQ MSA device that requires START_STOP to
be sent to start it and cannot upgrade the firmware then select y.
Otherwise, say N.