From: NeilBrown <neilb@cse.unsw.edu.au>
Date: Wed, 22 Jun 2005 00:17:09 +0000 (-0700)
Subject: [PATCH] md: cause md/raid1 to "repack" working devices when number of drives is changed
X-Git-Tag: v2.6.13-rc1~68^2~582^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ea9c07c6c6d1c14d9757dd8470dc4c85bbe9f28;p=pandora-kernel.git

[PATCH] md: cause md/raid1 to "repack" working devices when number of drives is changed

i.e.  missing or failed drives are moved to the end of the list.  The means
a 3 drive md array with the first drive missing can be shrunk to a two
drive array.  Currently that isn't possible.

Also, the "last_used" device number might be out-of-range after the number
of devices is reduced, so we set it to 0.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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