From: NeilBrown <neilb@suse.de>
Date: Mon, 27 May 2013 05:18:07 +0000 (+1000)
Subject: super1: set RESHAPE_NO_BACKUP based on new_offset.
X-Git-Tag: mdadm-3.3-rc1~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26bf55874d9fa6ca856455a6f112225825fde3c9;p=thirdparty%2Fmdadm.git

super1: set RESHAPE_NO_BACKUP based on new_offset.

We need to check for a backup iff the data_offset has changed.
Testing against level==10 was an effective but short-sighted approach.

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

diff --git a/super1.c b/super1.c
index d92e5945..a9ca2169 100644
--- a/super1.c
+++ b/super1.c
@@ -1006,7 +1006,8 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map)
 
 	if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) {
 		info->reshape_active = 1;
-		if (info->array.level == 10)
+		if ((sb->feature_map & __le32_to_cpu(MD_FEATURE_NEW_OFFSET)) &&
+		    sb->new_offset != 0)
 			info->reshape_active |= RESHAPE_NO_BACKUP;
 		info->reshape_progress = __le64_to_cpu(sb->reshape_position);
 		info->new_level = __le32_to_cpu(sb->new_level);