Ray Van Dolson schrieb:
On Wed, Jan 20, 2010 at 06:14:02AM -0800, Dirk H. Schulz wrote:That means calling sync echo 3 > /proc/sys/vm/drop_caches inside the VM, right? Or is there anything more to do to flush everything? DirkI would think the best way would be to actually pause the VM. If you snapshot a VM while it's running, even with the above, how can you guarantee an application won't do something on the VM right as the snapshot occurs?
That is an important point, I am already pondering about it. Of course pausing the vm is the better option - if you can afford it.
I am working systematically on an environment where the possibility of very high level availability vms is part of the design (e.g. 99,99 %). At the moment the only approach I can see is doing snapshots of a running vm and making those as reliable as possible.
Dirk -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
