Assemble/super0: allow non-in-sync devices to be assembled without complaint.

Other metadata formats already did not worry about whether 'sync' was
missing or not.  super0 needs that now, but only for 0.91 metadata
that is undergoing reshape.

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

1 files changed, 8 insertions, 1 deletions

diff --git a/super0.c b/super0.c
index 69fb460..9f78b94 100644
--- a/super0.c
+++ b/super0.c
@@ -478,7 +478,14 @@ static int update_super0(struct supertype *st, struct mdinfo *info,
 	if (strcmp(update, "assemble")==0) {
 		int d = info->disk.number;
 		int wonly = sb->disks[d].state & (1<<MD_DISK_WRITEMOSTLY);
-		if ((sb->disks[d].state & ~(1<<MD_DISK_WRITEMOSTLY))
+		int mask = (1<<MD_DISK_WRITEMOSTLY);
+		int add = 0;
+		if (sb->minor_version >= 91)
+			/* During reshape we don't insist on everything
+			 * being marked 'sync'
+			 */
+			add = (1<<MD_DISK_SYNC);
+		if (((sb->disks[d].state & ~mask) | add)
 		    != info->disk.state) {
 			sb->disks[d].state = info->disk.state | wonly;
 			rv = 1;