imsm: switch to multiple ppls automatically during assemble

If user has array with single ppl -
update the metadata to use multiple ppls.

Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

diff --git a/super-intel.c b/super-intel.c
index 65cdc9256df309c0e0f57fc0768c8fb6682a9eae..630fb6e1f44f346eae33228f64fa097f2d5c8870 100644 (file)
--- a/super-intel.c
+++ b/super-intel.c
@@ -6184,6 +6184,36 @@ static int validate_ppl_imsm(struct supertype *st, struct mdinfo *info,
 out:
        free(buf);
 
+       /*
+        * Update metadata to use mutliple PPLs area (1MB).
+        * This is done once for all RAID members
+        */
+       if (info->consistency_policy == CONSISTENCY_POLICY_PPL &&
+           info->ppl_size != (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9)) {
+               char subarray[20];
+               struct mdinfo *member_dev;
+
+               sprintf(subarray, "%d", info->container_member);
+
+               if (mdmon_running(st->container_devnm))
+                       st->update_tail = &st->updates;
+
+               if (st->ss->update_subarray(st, subarray, "ppl", NULL)) {
+                       pr_err("Failed to update subarray %s\n",
+                             subarray);
+               } else {
+                       if (st->update_tail)
+                               flush_metadata_updates(st);
+                       else
+                               st->ss->sync_metadata(st);
+                       info->ppl_size = (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9);
+                       for (member_dev = info->devs; member_dev;
+                            member_dev = member_dev->next)
+                               member_dev->ppl_size =
+                                   (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9);
+               }
+       }
+
        if (ret == 1 && map->map_state == IMSM_T_STATE_UNINITIALIZED)
                return st->ss->write_init_ppl(st, info, d->fd);