Il 27/08/2012 11:04, Stefan Hajnoczi ha scritto: >> > Also I see that snapshot_blkdev qmp command give in his description: >> > "Otherwise the snapshot will be internal! (currently unsupported)." >> > >> > is Live internal snapshots on the roadmap ? > I'm not aware of anyone working on adding internal snapshot in the > near future. Patches are welcome.
The main problem with internal snapshots is that it's difficult to work with two snapshots at the same time, especially if you need to write to two of them. IIUC this is why people concentrated more on external snapshots. It's not intrinsic to internal snapshots, more like a wart of the implementation, but not an easily fixed one. Paolo
