Add mbr pseudo metadata handler.

[thirdparty/mdadm.git] / Kill.c

diff --git a/Kill.c b/Kill.c
index e73897857dd15df767f8975fb841664ad74d964d..f5c30e97ea61f074c4ef5568bc993c2d54a0f2ea 100644 (file)
--- a/Kill.c
+++ b/Kill.c
@@ -53,7 +53,7 @@ int Kill(char *dev, struct supertype *st, int force, int quiet, int noexcl)
        }
        if (st == NULL)
                st = guess_super(fd);
-       if (st == NULL) {
+       if (st == NULL || st->ss->init_super == NULL) {
                if (!quiet)
                        fprintf(stderr, Name ": Unrecognised md component device - %s\n", dev);
                close(fd);
@@ -79,3 +79,81 @@ int Kill(char *dev, struct supertype *st, int force, int quiet, int noexcl)
        close(fd);
        return rv;
 }
+
+int Kill_subarray(char *dev, char *subarray, int quiet)
+{
+       /* Delete a subarray out of a container, the subarry must be
+        * inactive.  The subarray string must be a subarray index
+        * number.
+        *
+        * 0 = successfully deleted subarray from all container members
+        * 1 = failed to sync metadata to one or more devices
+        * 2 = failed to find the container, subarray, or other resource
+        *     issue
+        */
+       struct supertype supertype, *st = &supertype;
+       int fd, rv = 2;
+
+       memset(st, 0, sizeof(*st));
+
+       if (snprintf(st->subarray, sizeof(st->subarray), "%s", subarray) >=
+           (int)sizeof(st->subarray)) {
+               if (!quiet)
+                       fprintf(stderr,
+                               Name ": Input overflow for subarray '%s' > %zu bytes\n",
+                               subarray, sizeof(st->subarray) - 1);
+               return 2;
+       }
+
+       fd = open_subarray(dev, st, quiet);
+       if (fd < 0)
+               return 2;
+
+       if (!st->ss->kill_subarray) {
+               if (!quiet)
+                       fprintf(stderr,
+                               Name ": Operation not supported for %s metadata\n",
+                               st->ss->name);
+               goto free_super;
+       }
+
+       if (is_subarray_active(subarray, st->devname)) {
+               if (!quiet)
+                       fprintf(stderr,
+                               Name ": Subarray-%s still active, aborting\n",
+                               subarray);
+               goto free_super;
+       }
+
+       if (mdmon_running(st->devnum))
+               st->update_tail = &st->updates;
+
+       /* ok we've found our victim, drop the axe */
+       rv = st->ss->kill_subarray(st);
+       if (rv) {
+               if (!quiet)
+                       fprintf(stderr,
+                               Name ": Failed to delete subarray-%s from %s\n",
+                               subarray, dev);
+               goto free_super;
+       }
+
+       /* FIXME these routines do not report success/failure */
+       if (st->update_tail)
+               flush_metadata_updates(st);
+       else
+               st->ss->sync_metadata(st);
+
+       if (!quiet)
+               fprintf(stderr,
+                       Name ": Deleted subarray-%s from %s, UUIDs may have changed\n",
+                       subarray, dev);
+
+       rv = 0;
+
+ free_super:
+       st->ss->free_super(st);
+       close(fd);
+
+       return rv;
+}