+ if (array.not_persistent==0 || tst->ss->external) {
+ int dfd;
+ if (dv->writemostly == 1)
+ disc.state |= 1 << MD_DISK_WRITEMOSTLY;
+ dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT);
+ if (tst->ss->add_to_super(tst, &disc, dfd,
+ dv->devname)) {
+ close(dfd);
+ return 1;
+ }
+ /* write_init_super will close 'dfd' */
+ if (tst->ss->external)
+ /* mdmon will write the metadata */
+ close(dfd);
+ else if (tst->ss->write_init_super(tst))
+ return 1;
+ } else if (dv->re_add) {
+ /* this had better be raid1.
+ * As we are "--re-add"ing we must find a spare slot
+ * to fill.
+ */
+ char *used = malloc(array.raid_disks);
+ memset(used, 0, array.raid_disks);
+ for (j=0; j< tst->max_devs; j++) {
+ mdu_disk_info_t disc2;
+ disc2.number = j;
+ if (ioctl(fd, GET_DISK_INFO, &disc2))
+ continue;
+ if (disc2.major==0 && disc2.minor==0)
+ continue;
+ if (disc2.state & 8) /* removed */
+ continue;
+ if (disc2.raid_disk < 0)
+ continue;
+ if (disc2.raid_disk > array.raid_disks)
+ continue;
+ used[disc2.raid_disk] = 1;
+ }
+ for (j=0 ; j<array.raid_disks; j++)
+ if (!used[j]) {
+ disc.raid_disk = j;
+ disc.state |= (1<<MD_DISK_SYNC);
+ break;
+ }
+ }
+ if (dv->writemostly == 1)
+ disc.state |= (1 << MD_DISK_WRITEMOSTLY);
+ if (tst->ss->external) {
+ /* add a disk to an external metadata container
+ * only if mdmon is around to see it
+ */
+ struct mdinfo new_mdi;
+ struct mdinfo *sra;
+ int container_fd;
+ int devnum = fd2devnum(fd);
+
+ container_fd = open_dev_excl(devnum);
+ if (container_fd < 0) {
+ fprintf(stderr, Name ": add failed for %s:"
+ " could not get exclusive access to container\n",
+ dv->devname);
+ return 1;
+ }
+
+ if (!mdmon_running(devnum)) {
+ fprintf(stderr, Name ": add failed for %s: mdmon not running\n",
+ dv->devname);
+ close(container_fd);
+ return 1;
+ }
+
+ sra = sysfs_read(container_fd, -1, 0);
+ if (!sra) {
+ fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n",
+ dv->devname);
+ close(container_fd);
+ return 1;
+ }
+ sra->array.level = LEVEL_CONTAINER;
+ /* Need to set data_offset and component_size */
+ tst->ss->getinfo_super(tst, &new_mdi);
+ new_mdi.disk.major = disc.major;
+ new_mdi.disk.minor = disc.minor;
+ if (sysfs_add_disk(sra, &new_mdi, 0) != 0) {
+ fprintf(stderr, Name ": add new device to external metadata"
+ " failed for %s\n", dv->devname);
+ close(container_fd);
+ return 1;
+ }
+ ping_monitor(devnum2devname(devnum));
+ sysfs_free(sra);
+ close(container_fd);
+ } else if (ioctl(fd, ADD_NEW_DISK, &disc)) {
+ fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
+ dv->devname, j, strerror(errno));