*first_bad_bs = bs;
return ret;
}
+
+
+int bdrv_all_goto_snapshot(const char *name, BlockDriverState **first_bad_bs)
+{
+ int err = 0;
+ BlockDriverState *bs = NULL;
+
+ while (err == 0 && (bs = bdrv_next(bs))) {
+ AioContext *ctx = bdrv_get_aio_context(bs);
+
+ aio_context_acquire(ctx);
+ if (bdrv_can_snapshot(bs)) {
+ err = bdrv_snapshot_goto(bs, name);
+ }
+ aio_context_release(ctx);
+ }
+
+ *first_bad_bs = bs;
+ return err;
+}
bool bdrv_all_can_snapshot(BlockDriverState **first_bad_bs);
int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bsd_bs,
Error **err);
+int bdrv_all_goto_snapshot(const char *name, BlockDriverState **first_bsd_bs);
#endif
/* Flush all IO requests so they don't interfere with the new state. */
bdrv_drain_all();
- bs = NULL;
- while ((bs = bdrv_next(bs))) {
- if (bdrv_can_snapshot(bs)) {
- ret = bdrv_snapshot_goto(bs, name);
- if (ret < 0) {
- error_report("Error %d while activating snapshot '%s' on '%s'",
- ret, name, bdrv_get_device_name(bs));
- return ret;
- }
- }
+ ret = bdrv_all_goto_snapshot(name, &bs);
+ if (ret < 0) {
+ error_report("Error %d while activating snapshot '%s' on '%s'",
+ ret, name, bdrv_get_device_name(bs));
+ return ret;
}
/* restore the VM state */