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Description of problem: ------------------------ block stream to a non-enough space path, block stream will stop when there is no space left, info block-jobs only shows "No active jobs", guest runs until when there is writing triggers "block I/O error in device 'drive-virtio-disk0': No space left on device (28)" and stopped, there should be a "block stream failed" prompt when using info block-jobs, or is there a way libvirt can tell this? Version-Release number of selected component (if applicable): -------------------------------------------------------------- qemu-kvm-0.12.1.2-2.262.el6rhev.x86_64 How reproducible: ------------------ 100% Steps to Reproduce: -------------------- 1. qemu-img -f raw disk 1G 2. mkfs.ext4 disk 3. mount -o loop disk /path 4. (qemu) snapshot_blkdev drive-virtio-disk0 /path/sn1 qcow2 5. (qemu) block_stream drive-virtio-disk0 Actual results: --------------- after no space left in /path, block stream stops: (qemu) info block-jobs Streaming device drive-virtio-disk0: Completed 1968177152 of 21474836480 bytes, speed limit 0 bytes/s (qemu) info block-jobs No active jobs
If you connect with QMP, you should get a BLOCK_JOB_COMPLETED monitor event with an error description.
(In reply to comment #2) > If you connect with QMP, you should get a BLOCK_JOB_COMPLETED monitor event > with an error description. Right, the main test/verification tool should be QMP
Verified on QMP, list here for reference: { "execute": "block_stream", "arguments": { "device": "drive-virtio-disk0" } } {"return": {}} {"timestamp": {"seconds": 1332755362, "microseconds": 687432}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "drive-virtio-disk0", "len": 21474836480, "offset": 2036858880, "speed": 0, "type": "stream", "error": "No space left on device"}}