Assemble: fix --force assembly of v1.x arrays which are recovering.

1.x metadata allows a device to be a member of the array while it
is still recoverying.  So it is a working member, but is not
completely in-sync.

mdadm/assemble does not understand this distinction and assumes that a
work member is fully in-sync for the purpose of determining if there
are enough in-sync devices for the array to be functional.

So collect the 'recovery_start' value from the metadata and use it in
assemble when determining how useful a given device is.

Reported-by: Mikael Abrahamsson <swmike@swm.pp.se>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/super0.c b/super0.c
index 0485a3a..5c6b7d7 100644
--- a/super0.c
+++ b/super0.c
@@ -372,6 +372,7 @@ static void getinfo_super0(struct supertype *st, struct mdinfo *info)
 
 	uuid_from_super0(st, info->uuid);
 
+	info->recovery_start = MaxSector;
 	if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) {
 		info->reshape_active = 1;
 		info->reshape_progress = sb->reshape_position;