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authorHeinz Mauelshagen <mauelshagen@redhat.com>2007-05-09 02:33:06 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 12:30:47 -0700
commit26b9f228703f0518a90e7513d6fe7b6abeed5138 (patch)
tree3437e92667c338ea46ad47b064ce4908d7d75fe2 /drivers/md/Kconfig
parent0ba699347e96b5468b42b3decf1f381abbf99652 (diff)
downloadlinux-sh-26b9f228703f0518a90e7513d6fe7b6abeed5138.tar.gz
dm: delay target
New device-mapper target that can delay I/O (for testing). Reads can be separated from writes, redirected to different underlying devices and delayed by differing amounts of time. Signed-off-by: Heinz Mauelshagen <mauelshagen@redhat.com> Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/md/Kconfig')
-rw-r--r--drivers/md/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 4540ade6b6b5..7df934d69134 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -262,6 +262,15 @@ config DM_MULTIPATH_EMC
---help---
Multipath support for EMC CX/AX series hardware.
+config DM_DELAY
+ tristate "I/O delaying target (EXPERIMENTAL)"
+ depends on BLK_DEV_DM && EXPERIMENTAL
+ ---help---
+ A target that delays reads and/or writes and can send
+ them to different devices. Useful for testing.
+
+ If unsure, say N.
+
endmenu
endif