Hi, list I was trying "drive-backup" for incremental backups, and so far so good for individual drives. The question is that, when I grouped the drive-backup into a transaction, I got errors like:
{"id":"libvirt-377183","error":{"class":"GenericError","desc":"a sync_bitmap was provided to backup_run, but received an incompatible sync_mode (top)"}} It is also the case when sync mode is changed to 'full'. And the only valid mode seems to be 'incremental', which is exactly what's documented in: https://github.com/qemu/qemu/blob/master/docs/interop/bitmaps.rst#partial-transactional-failures But, there are no warnings saying that only 'incremental' sync mode can be grouped into a transaction. Any suggestion on taking multiple drive-backups without sync mode = 'incremental'? Thanks in advance. PS. here is the snippet of my QMP command: ----cut begin---- { "execute": "transaction", "arguments": { "actions": [ { "type": "drive-backup", "data": { "device": "drive-virtio-disk0", "target": "/opt/backups/82faf05a-2cad-43a7-b9d6-9c78075534fe.qcow2", "bitmap": "bitmap0", "job-id": "job-516", "sync": "top", "format": "qcow2" } }, { "type": "drive-backup", "data": { "device": "drive-scsi0-0-0-1", "target": "/opt/backups/6ee3e2d4-6e40-49d5-b15f-ff20c0aafbee.qcow2", "bitmap": "bitmap1", "job-id": "job-517", "sync": "top", "format": "qcow2" } } ], } ----cut ends---- -- Thanks, Li Qun