>From: Klaus Espenlaub >Sent: Thursday, June 16, 2011 12:13 PM > >On 16.06.2011 19:23, Geoff Nordli wrote: >> Is there a way to quiesce a disk to take a file system snapshot? > >Pausing a VM implicitly completes all outstanding async I/O requests, which >includes the dirty parts of the cache. >
Thanks, that is the information I am looking for. >> If you are using cached i/o then it would need to flush the cache as well. > >The guest has its own cache, and we don't have control over that... > >So the result of taking a snapshot will be an image of limited consistency. This is >the reason why a proper snapshot of a VM includes the entire state of the >system, including RAM, device state and so on. > Yes, that makes sense, because you have no control what is going on inside the Guest OS, like a database for example. Anything that happens in the guest which needs consistency needs to be taken care of separately. Have a great day! Geoff _______________________________________________ vbox-dev mailing list vbox-dev@virtualbox.org http://vbox.innotek.de/mailman/listinfo/vbox-dev