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authorNeilBrown <neilb@suse.de>2006-01-06 11:20:55 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 19:34:09 +0300
commit014236d2b8ec6faea2a6134ab8e019d84d67b524 (patch)
tree80f655fe0631f56544b96f2b9750f93e327b23de /Documentation/md.txt
parent2bf071bf50580380a8c3afe5eef8152a66be96c7 (diff)
downloadlinux-014236d2b8ec6faea2a6134ab8e019d84d67b524.tar.xz
[PATCH] md: expose device slot information via sysfs
This the role that a device has in an array can be viewed and set. Signed-off-by: Neil Brown <neilb@suse.de> Acked-by: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@@ -236,6 +236,14 @@ Each directory contains:
providing an ongoing count for arrays with metadata managed by
userspace.
+ slot
+ This gives the role that the device has in the array. It will
+ either be 'none' if the device is not active in the array
+ (i.e. is a spare or has failed) or an integer less than the
+ 'raid_disks' number for the array indicating which possition
+ it currently fills. This can only be set while assembling an
+ array. A device for which this is set is assumed to be working.
+
An active md device will also contain and entry for each active device
in the array. These are named