On 08/22/2011 03:48 PM, Ryan Harper wrote:
* Stefan Hajnoczi<stefa...@gmail.com> [2011-08-22 15:32]:
We wouldn't rm -rf block/* because we still need qemu-nbd. It
probably makes sense to keep what we have today. I'm talking more
about a shift from writing our own image format to integrating
existing storage support.
I think this is a key point. While I do like the idea of keeping QEMU
focused on single VM, I think we don't help ourselves by not consuming
the hypervisor platform services and integrating/exploiting those
features to make using QEMU easier.
Let's avoid the h-word here as it's not terribly relevant to the discussion.
Configuring block devices is fundamentally a privileged operation. QEMU
fundamentally is designed to be useful as an unprivileged user.
That's the trouble with something like LVM. Only root can create LVM
snapshots and it's an all-or-nothing security model.
If you want to get QEMU out of the snapshot business, you need a file
system that's widely available that allows non-privileged users to take
snapshots of individual files.
Regards,
Anthony Liguori
