# Block device driver configuration
#
+if BLOCK
+
menu "Multi-device support (RAID and LVM)"
config MD
depends on BLK_DEV_MD && EXPERIMENTAL
---help---
RAID-10 provides a combination of striping (RAID-0) and
- mirroring (RAID-1) with easier configuration and more flexable
+ mirroring (RAID-1) with easier configuration and more flexible
layout.
Unlike RAID-0, but like RAID-1, RAID-10 requires all devices to
be the same size (or at least, only as much as the smallest device
If unsure, say Y.
config MD_RAID5_RESHAPE
- bool "Support adding drives to a raid-5 array (experimental)"
- depends on MD_RAID5 && EXPERIMENTAL
+ bool "Support adding drives to a raid-5 array"
+ depends on MD_RAID456
+ default y
---help---
A RAID-5 set can be expanded by adding extra drives. This
requires "restriping" the array which means (almost) every
block must be written to a different place.
This option allows such restriping to be done while the array
- is online. However it is still EXPERIMENTAL code. It should
- work, but please be sure that you have backups.
+ is online.
- You will need mdadm verion 2.4.1 or later to use this
+ You will need mdadm version 2.4.1 or later to use this
feature safely. During the early stage of reshape there is
a critical section where live data is being over-written. A
crash during this time needs extra care for recovery. The
There should be enough spares already present to make the new
array workable.
+ If unsure, say Y.
+
config MD_MULTIPATH
tristate "Multipath I/O support"
depends on BLK_DEV_MD
If unsure, say N.
+config DM_DEBUG
+ boolean "Device mapper debugging support"
+ depends on BLK_DEV_DM && EXPERIMENTAL
+ ---help---
+ Enable this for messages that may help debug device-mapper problems.
+
+ If unsure, say N.
+
config DM_CRYPT
tristate "Crypt target support"
depends on BLK_DEV_DM && EXPERIMENTAL
select CRYPTO
+ select CRYPTO_CBC
---help---
This device-mapper target allows you to create a device that
transparently encrypts the data on it. You'll need to activate
tristate "Snapshot target (EXPERIMENTAL)"
depends on BLK_DEV_DM && EXPERIMENTAL
---help---
- Allow volume managers to take writeable snapshots of a device.
+ Allow volume managers to take writable snapshots of a device.
config DM_MIRROR
tristate "Mirror target (EXPERIMENTAL)"
endmenu
+endif