Manage: be more careful about --add attempts.

If an --add is requested and a re-add looks promising but fails or
cannot possibly succeed, then don't try the add.  This avoids
inadvertently turning devices into spares when an array is failed but
the devices seem to actually work.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/mdadm.h b/mdadm.h
index 9ad99f04..3e229103 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -986,6 +986,7 @@ extern char *fname_from_uuid(struct supertype *st,
 extern unsigned long calc_csum(void *super, int bytes);
 extern int enough(int level, int raid_disks, int layout, int clean,
 		   char *avail, int avail_disks);
+extern int enough_fd(int fd);
 extern int ask(char *mesg);
 extern unsigned long long get_component_size(int fd);
 extern void remove_partitions(int fd);