Add subarray field to supertype.

When loading the metadata for a subarray (super_by_fd), we set
->subarray to be the name read from md/metadata_version so that
getinfo_super can return info about the correct array.

With this we can differentiate between a container and
an array within the container by looking at ->subarray[0].

1 files changed, 3 insertions, 0 deletions

diff --git a/super1.c b/super1.c
index ae6c8a37..a6a308a6 100644
--- a/super1.c
+++ b/super1.c
@@ -1065,6 +1065,9 @@ static int load_super1(struct supertype *st, int fd, char *devname)
 
 	free_super1(st);
 
+	if (st->subarray[0])
+		return 1;
+
 	if (st->ss == NULL || st->minor_version == -1) {
 		int bestvers = -1;
 		struct supertype tst;