From: NeilBrown <neilb@suse.de>
Date: Tue, 6 Mar 2012 23:47:34 +0000 (+1100)
Subject: Assemble: support assembling of a RAID0 being reshaped.
X-Git-Tag: mdadm-3.2.4~70
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b720636a5849397dbc6dc1b0f0b671d17034a28b;p=thirdparty%2Fmdadm.git

Assemble: support assembling of a RAID0 being reshaped.

This is a bit of a hack and the code need to be made more
general.  But this adds the special case of a RAID0 being
reshaped which looks like a RAID4 but doesn't need as many
devices.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/Assemble.c b/Assemble.c
index 0af8ad86..fadacf5f 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -976,7 +976,9 @@ int Assemble(struct supertype *st, char *mddev,
 			if (i < content->array.raid_disks) {
 				if (devices[j].i.recovery_start == MaxSector ||
 				    (content->reshape_active &&
-				     j >= content->array.raid_disks - content->delta_disks)) {
+				     ((i >= content->array.raid_disks - content->delta_disks) ||
+				      (i >= content->array.raid_disks - content->delta_disks - 1
+				       && content->array.level == 4)))) {
 					okcnt++;
 					avail[i]=1;
 				} else