static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
{
conf_t *conf = mddev->private;
- int found = 0;
+ int err = -EEXIST;
int mirror = 0;
mirror_info_t *p;
+ int first = 0;
+ int last = mddev->raid_disks - 1;
- for (mirror=0; mirror < mddev->raid_disks; mirror++)
+ if (rdev->raid_disk >= 0)
+ first = last = rdev->raid_disk;
+
+ for (mirror = first; mirror <= last; mirror++)
if ( !(p=conf->mirrors+mirror)->rdev) {
blk_queue_stack_limits(mddev->queue,
p->head_position = 0;
rdev->raid_disk = mirror;
- found = 1;
+ err = 0;
/* As all devices are equivalent, we don't need a full recovery
* if this was recently any drive of the array
*/
}
print_conf(conf);
- return found;
+ return err;
}
static int raid1_remove_disk(mddev_t *mddev, int number)
conf_t *conf = mddev_to_conf(mddev);
int cnt, raid_disks;
unsigned long flags;
- int d, d2;
+ int d, d2, err;
/* Cannot change chunk_size, layout, or level */
if (mddev->chunk_size != mddev->new_chunk ||
return -EINVAL;
}
- md_allow_write(mddev);
+ err = md_allow_write(mddev);
+ if (err)
+ return err;
raid_disks = mddev->raid_disks + mddev->delta_disks;