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authorArjan van de Ven <arjan@linux.intel.com>2008-09-21 15:44:32 -0700
committerArjan van de Ven <arjan@linux.intel.com>2008-10-12 08:25:02 -0700
commita364092a412975e506415f77f0628cbdd28c3913 (patch)
tree98d7d66e8658c9959b2961f0b40356e981277395 /drivers/md
parent82cbc11a4146d6a8acd81f81f7fe17387668107f (diff)
raid: make RAID autodetect default a KConfig option
RAID autodetect has the side effect of requiring synchronisation of all device drivers, which can make the boot several seconds longer (I've measured 7 on one of my laptops).... even for systems that don't have RAID setup for the root filesystem (the only FS where this matters). This patch makes the default for autodetect a config option; either way the user can always override via the kernel command line. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 07d92c11b5d..8e72c916535 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -30,6 +30,20 @@ config BLK_DEV_MD
If unsure, say N.
+config MD_AUTODETECT
+ bool "Autodetect RAID arrays during kernel boot"
+ depends on BLK_DEV_MD
+ 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