Support external metadata recovery-resume

[thirdparty/mdadm.git] / Assemble.c

diff --git a/Assemble.c b/Assemble.c
index 3c3a004fc8045a67b16351a4bde7d7d3b67f8c04..014d644b42667a5755b2edb5736c15d9775f360b 100644 (file)
--- a/Assemble.c
+++ b/Assemble.c
@@ -315,11 +315,16 @@ int Assemble(struct supertype *st, char *mddev,
                        }
                        /* It is worth looking inside this container.
                         */
+                       if (verbose > 0)
+                               fprintf(stderr, Name ": looking in container %s\n",
+                                       devname);
                next_member:
                        if (tmpdev->content)
                                content = tmpdev->content;
                        else
                                content = tst->ss->container_content(tst);
+                       if (!content)
+                               goto loop; /* empty container */
 
                        tmpdev->content = content->next;
                        if (tmpdev->content == NULL)
@@ -403,6 +408,9 @@ int Assemble(struct supertype *st, char *mddev,
                                        fprintf(stderr, Name ": member %s in %s is already assembled\n",
                                                content->text_version,
                                                devname);
+                       skip:
+                               if (tmpdev->content)
+                                       goto next_member;
                                tst->ss->free_super(tst);
                                tst = NULL;
                                content = NULL;
@@ -410,6 +418,21 @@ int Assemble(struct supertype *st, char *mddev,
                                        goto loop;
                                return 1;
                        }
+                       if (ident->member && ident->member[0]) {
+                               char *s = strchr(content->text_version+1, '/');
+                               if (s == NULL) {
+                                       fprintf(stderr, Name ": badly formatted version: %s\n",
+                                               content->text_version);
+                                       goto skip;
+                               }
+                               if (strcmp(ident->member, s+1) != 0) {
+                                       if (report_missmatch)
+                                               fprintf(stderr,
+                                                       Name ": skipping wrong member %s\n",
+                                                       content->text_version);
+                                       goto skip;
+                               }
+                       }
                        st = tst; tst = NULL;
                        if (!auto_assem && tmpdev->next != NULL) {
                                fprintf(stderr, Name ": %s is a container, but is not "
@@ -418,6 +441,9 @@ int Assemble(struct supertype *st, char *mddev,
                                st->ss->free_super(st);
                                return 1;
                        }
+                       if (verbose > 0)
+                               fprintf(stderr, Name ": found match on member %s in %s\n",
+                                       content->text_version, devname);
                        break;
                }
                if (st == NULL)
@@ -563,6 +589,7 @@ int Assemble(struct supertype *st, char *mddev,
 #endif
        /* Ok, no bad inconsistancy, we can try updating etc */
        bitmap_done = 0;
+       content->update_private = NULL;
        for (tmpdev = devlist; tmpdev; tmpdev=tmpdev->next) if (tmpdev->used == 1) {
                char *devname = tmpdev->devname;
                struct stat stb;
@@ -656,7 +683,7 @@ int Assemble(struct supertype *st, char *mddev,
                            > devices[most_recent].i.events)
                                most_recent = devcnt;
                }
-               if (content->array.level == -4)
+               if (content->array.level == LEVEL_MULTIPATH)
                        /* with multipath, the raid_disk from the superblock is meaningless */
                        i = devcnt;
                else
@@ -715,6 +742,8 @@ int Assemble(struct supertype *st, char *mddev,
                }
                devcnt++;
        }
+       free(content->update_private);
+       content->update_private = NULL;
 
        if (devcnt == 0) {
                fprintf(stderr, Name ": no devices found for %s\n",
@@ -747,8 +776,8 @@ int Assemble(struct supertype *st, char *mddev,
                /* note: we ignore error flags in multipath arrays
                 * as they don't make sense
                 */
-               if (content->array.level != -4)
-                       if (!(devices[j].i.disk.state & (1<<MD_DISK_SYNC))) {
+               if (content->array.level != LEVEL_MULTIPATH)
+                       if (!(devices[j].i.disk.state & (1<<MD_DISK_ACTIVE))) {
                                if (!(devices[j].i.disk.state
                                      & (1<<MD_DISK_FAULTY)))
                                        sparecnt++;
@@ -961,6 +990,10 @@ int Assemble(struct supertype *st, char *mddev,
        if (content->reshape_active) {
                int err = 0;
                int *fdlist = malloc(sizeof(int)* bestcnt);
+               if (verbose > 0)
+                       fprintf(stderr, Name ":%s has an active reshape - checking "
+                               "if critical section needs to be restored\n",
+                               chosen_name);
                for (i=0; i<bestcnt; i++) {
                        int j = best[i];
                        if (j >= 0) {
@@ -975,13 +1008,15 @@ int Assemble(struct supertype *st, char *mddev,
                                fdlist[i] = -1;
                }
                if (!err)
-                       err = Grow_restart(st, content, fdlist, bestcnt, backup_file);
+                       err = Grow_restart(st, content, fdlist, bestcnt, backup_file, verbose > 0);
                while (i>0) {
                        i--;
                        if (fdlist[i]>=0) close(fdlist[i]);
                }
                if (err) {
                        fprintf(stderr, Name ": Failed to restore critical section for reshape, sorry.\n");
+                       if (backup_file == NULL)
+                               fprintf(stderr,"      Possibly you needed to specify the --backup-file\n");
                        close(mdfd);
                        return err;
                }
@@ -1090,7 +1125,20 @@ int Assemble(struct supertype *st, char *mddev,
                              content->array.layout, clean, avail, okcnt) &&
                       (okcnt >= req_cnt || start_partial_ok)
                             ))) {
-                       if (ioctl(mdfd, RUN_ARRAY, NULL)==0) {
+                       /* This array is good-to-go.
+                        * If a reshape is in progress then we might need to
+                        * continue monitoring it.  In that case we start
+                        * it read-only and let the grow code make it writable.
+                        */
+                       int rv;
+#ifndef MDASSEMBLE
+                       if (content->reshape_active &&
+                           content->delta_disks <= 0)
+                               rv = Grow_continue(mdfd, st, content, backup_file);
+                       else
+#endif
+                               rv = ioctl(mdfd, RUN_ARRAY, NULL);
+                       if (rv == 0) {
                                if (verbose >= 0) {
                                        fprintf(stderr, Name ": %s has been started with %d drive%s",
                                                mddev, okcnt, okcnt==1?"":"s");