Change way that reshaping arrays with external-metadata are assembled.

Now that the external metadata handler must provide an md-compatible
old/new geometry, sys_set_array can do all of the array set-up for
an array that is undergoing reshape.
That leave less for reshape_array to do.

Also clean up how reshape_array tells if the reshape has started or
not.
Don't use ->reshape_active as that doesn't tell us anything consistent
at this stage, only use the 'restart' flag passed in.

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

1 files changed, 5 insertions, 2 deletions

diff --git a/sysfs.c b/sysfs.c
index 883a8348..a7dfcc29 100644
--- a/sysfs.c
+++ b/sysfs.c
@@ -574,8 +574,11 @@ int sysfs_set_array(struct mdinfo *info, int vers)
 		rv |= sysfs_set_num(info, NULL, "reshape_position",
 				    info->reshape_progress);
 		rv |= sysfs_set_num(info, NULL, "chunk_size", info->new_chunk);
-		/* Don't set layout or raid_disks here as they require some
-		 * analysis and are set by reshape_array 
+		rv |= sysfs_set_num(info, NULL, "layout", info->new_layout);
+		rv |= sysfs_set_num(info, NULL, "raid_disks",
+				    info->array.raid_disks + info->delta_disks);
+		/* We don't set 'new_level' here.  That can only happen
+		 * once the reshape completes.
 		 */
 	}
 	return rv;