From: Jakub Radtke <jakub.radtke@intel.com>
Date: Fri, 15 Jan 2021 05:46:54 +0000 (-0500)
Subject: Modify mdstat parsing for volumes with the bitmap
X-Git-Tag: mdadm-4.2-rc1~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b090e910756ea1165be5ac879746ab4bb83a2f91;p=thirdparty%2Fmdadm.git

Modify mdstat parsing for volumes with the bitmap

Current mdstat read functionality is not working correctly
for the volumes with the write-intent bitmap.
It affects rebuild and reshape use cases.

Signed-off-by: Jakub Radtke <jakub.radtke@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---

diff --git a/mdstat.c b/mdstat.c
index dd96cca7..2fd792c5 100644
--- a/mdstat.c
+++ b/mdstat.c
@@ -191,6 +191,12 @@ struct mdstat_ent *mdstat_read(int hold, int start)
 			else if (strcmp(w, "inactive") == 0) {
 				ent->active = 0;
 				in_devs = 1;
+			} else if (strcmp(w, "bitmap:") == 0) {
+				/* We need to stop parsing here;
+				 * otherwise, ent->raid_disks will be
+				 * overwritten by the wrong value.
+				 */
+				break;
 			} else if (ent->active > 0 &&
 				 ent->level == NULL &&
 				 w[0] != '(' /*readonly*/) {