On Tue, Nov 08, 2011 at 04:57:04PM +0200, Avi Kivity wrote:Right, thinko - qemu's snapshots are fairly useless due to sittingRunning qemu -snapshot on the actual root block device is the onlyHow is -snapshot any different? If the host writes a block after the
safe way to reuse the host installation, although it gets a bit
complicated if people have multiple devices mounted into the namespace.
guest has been launched, but before that block was cowed, then the guest
will see the new block.
ontop of the file to be modified.
It could work with a btrfs snapshot, but not everyone uses that.Or LVM snapshot. Either way, just reusing the root fs without care
is a dumb idea, and I really don't want any tool or script that
encurages such braindead behaviour in the kernel tree.