+ if (!bdrv_is_read_only(bs)) {
+ sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS;
+ if (sectors <= 0) {
+ return;
+ }
+
+ bmds = qemu_mallocz(sizeof(BlkMigDevState));
+ bmds->bs = bs;
+ bmds->bulk_completed = 0;
+ bmds->total_sectors = sectors;
+ bmds->completed_sectors = 0;
+ bmds->shared_base = block_mig_state.shared_base;
+ alloc_aio_bitmap(bmds);
+ drive_get_ref(drive_get_by_blockdev(bs));
+ bdrv_set_in_use(bs, 1);
+
+ block_mig_state.total_sector_sum += sectors;
+
+ if (bmds->shared_base) {
+ monitor_printf(mon, "Start migration for %s with shared base "
+ "image\n",
+ bs->device_name);
+ } else {
+ monitor_printf(mon, "Start full migration for %s\n",
+ bs->device_name);
+ }
+
+ QSIMPLEQ_INSERT_TAIL(&block_mig_state.bmds_list, bmds, entry);
+ }
+}
+
+static void init_blk_migration(Monitor *mon, QEMUFile *f)
+{