From: Adam Kwolek <adam.kwolek@intel.com>
Date: Thu, 9 Jun 2011 03:00:55 +0000 (+1000)
Subject: imsm: FIX: Do not continue reshape when backup exists
X-Git-Tag: mdadm-3.2.2~27
X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=b2c59438169217eb1077f6cfddf2147a9c978588;p=thirdparty%2Fmdadm.git

imsm: FIX: Do not continue reshape when backup exists

When backup exists in copy area reshape cannot be continued.
In such situation, array is in unstable state.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/super-intel.c b/super-intel.c
index ff029d4f..06831c3e 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -8744,6 +8744,13 @@ static int imsm_manage_reshape(
 	/* initialize migration record for start condition */
 	if (sra->reshape_progress == 0)
 		init_migr_record_imsm(st, dev, sra);
+	else {
+		if (__le32_to_cpu(migr_rec->rec_status) != UNIT_SRC_NORMAL) {
+			dprintf("imsm: cannot restart migration when data "
+				"are present in copy area.\n");
+			goto abort;
+		}
+	}
 
 	/* size for data */
 	buf_size = __le32_to_cpu(migr_rec->blocks_per_unit) * 512;