At the end of this FAQ (viewtopic.php?f=24&t=8046
), TerryE suggests this prcedure for a backup:
"If you can’t take your VMs offline for long then one good trick is to start a new snapshot. Only the latest snapshot VDIs are opened R/W, so you can then backup the second to last whilst still using the VM. To resync, you savestate, delete the second last snapshot which in effect merges its content into latest; and resume the VM."
I have a question regarding this advice in the light of Virtualbox 4's keeping everything in one folder:
If I take a snapshot of a VM, copy the base VDI while the VM is running as suggested, then save-state, I could then copy the entire VM folder contents, except for the base vdi which has already been copied. My backup will then be a save-stated VM with one snapshot, theoretically being completed with the machine being off-line for much less time. I start the VM again, "delete" the snapshot, which merges the snapshot data back into the base vdi (while the VM is running, yes?) and I'm back up quickly.
Now, if my host dies and I reinstall Virtualbox on a new processor-compatible host, and I copy over that backed-up VM folder, will the new install of Virtualbox be able to recognize the save-stated, snapshotted VM and restart using the save-state, and then allow me to delete the snapshot into the base vdi as before? In other words, will the "restore" part of this backup process work?