If unsure, say N.
+config MD_AUTODETECT
+ bool "Autodetect RAID arrays during kernel boot"
+ depends on BLK_DEV_MD=y
+ default y
+ ---help---
+ If you say Y here, then the kernel will try to autodetect raid
+ arrays as part of its boot process.
+
+ If you don't use raid and say Y, this autodetection can cause
+ a several-second delay in the boot time due to various
+ synchronisation steps that are part of this step.
+
+ If unsure, say Y.
+
config MD_LINEAR
tristate "Linear (append) mode"
depends on BLK_DEV_MD
config DM_MULTIPATH
tristate "Multipath target"
depends on BLK_DEV_DM
+ # nasty syntax but means make DM_MULTIPATH independent
+ # of SCSI_DH if the latter isn't defined but if
+ # it is, DM_MULTIPATH must depend on it. We get a build
+ # error if SCSI_DH=m and DM_MULTIPATH=y
+ depends on SCSI_DH || !SCSI_DH
---help---
Allow volume managers to support multipath hardware.
-config DM_MULTIPATH_EMC
- tristate "EMC CX/AX multipath support"
- depends on DM_MULTIPATH && BLK_DEV_DM
- ---help---
- Multipath support for EMC CX/AX series hardware.
-
-config DM_MULTIPATH_RDAC
- tristate "LSI/Engenio RDAC multipath support (EXPERIMENTAL)"
- depends on DM_MULTIPATH && BLK_DEV_DM && SCSI && EXPERIMENTAL
- ---help---
- Multipath support for LSI/Engenio RDAC.
-
-config DM_MULTIPATH_HP
- tristate "HP MSA multipath support (EXPERIMENTAL)"
- depends on DM_MULTIPATH && BLK_DEV_DM && SCSI && EXPERIMENTAL
- ---help---
- Multipath support for HP MSA (Active/Passive) series hardware.
-
config DM_DELAY
tristate "I/O delaying target (EXPERIMENTAL)"
depends on BLK_DEV_DM && EXPERIMENTAL