On Tue, Aug 11, 2009 at 8:55 AM, Etienne Goyer <[email protected]>wrote:
> Jarl Friis wrote: > >> We run our servers 24/7, so suspending the virtual machines is not an > >> option. My solution has been to store the disk images on lvm volumes > and > >> take a snapshot of the lvm volume, then backup the disk images from the > >> snapshot. > > I did that for a couple system in the past. It is a nice hack, as long > as you understand that your snapshots are dynamic images of a running > systems and hence may not be coherent. > > For example, if your system is running some form of database, you may > want to temporarily put the database read-only, commit pending writes > and *then* take the LVM snapshot. > Yeah it would absolutely be prudent to quiesce your virtual machines before backing them up. For Windows virtual machines, I'm not even sure where I would start to try and do that from the host. For linux virtual machines, you could ssh in and run the necessary commands, but that takes time, which I have not gotten to yet. For the time being, they are crash-consitent backups at least. Brazen
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