They should be able to take snapshots, but they wouldn't be any different than lvm snapshots.
On Fri, Aug 14, 2009 at 9:58 AM, Kent Tenney <[email protected]> wrote: > Can ZFS or btrfs create successful snapshots of VMs? > > Thanks, > Kent > > On Thu, Aug 13, 2009 at 3:24 PM, Etienne > Goyer<[email protected]> wrote: > > Mat wrote: > >> Just an idea: what if both a KVM snapshot and the LVM snapshot could be > >> done at the same time? It should then be possible to bring the VM up in > >> a running state. > > > > I guess that might be good in some circumstance, but only when it's ok > > to get a system in a previous running state. This is not always the > > case; for example, you would not want a mail server to go back a couple > > of hours in time (mail in the queue at backup time would get redelivered > > at restore time, mail deleted from user inbox would reappear, mail > > delivered to user's inbox since backup would disappear, etc). > > > >> My idea is probably trying to address the underlining issue from the > >> wrong angle. I suppose that if I needed a service to run 24/7 and > >> downtime was not acceptable, I would run my services in a server farm > >> with proper fault-tolerance and redundancy, and where database backup > >> and recoveries wouldn't be done on the VM level. > > > > I do not know. Backup is a tough problem, and there is no > > one-size-fit-all solution. Dumping the file system content and > > checkpointing system states have been the two most common approaches to > > date, but they are flawed for many applications. It's all a matter of > > compromise. But yeah. backup is second best after resiliency, so you > > may want to invest your time and brain cycles in that instead. > > > > Just my 0.02$ ... > > > > -- > > Etienne Goyer > > Technical Account Manager - Canonical Ltd > > Ubuntu Certified Instructor > > > > ~= Ubuntu: Linux for Human Beings =~ > > > > -- > > ubuntu-server mailing list > > [email protected] > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-server > > More info: https://wiki.ubuntu.com/ServerTeam > > > > -- > ubuntu-server mailing list > [email protected] > https://lists.ubuntu.com/mailman/listinfo/ubuntu-server > More info: https://wiki.ubuntu.com/ServerTeam >
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