Re: [CentOS-virt] Backing up a running KVM guest

Rui Miguel Silva Seabra wrote:

On Wed, Mar 25, 2009 at 01:22:43PM +0000, Julian Price wrote:

...

It has not been released yet and it's a first draft, so break it to me gently... http://wiki.centos.org/HowTos/BackupKVMGuest

Interesting read. One other alternative, with drbd:

1. break sync on other node
2. backup on other node
3. resync other node

Of course, drbd may not be best suited for disk intensive uses but your milleage may vary...

Rui

drdb - If I understand right, this is another way to take a snapshot - similar to taking one disk out of a RAID1, backing it up then rebuilding the RAID. The LVM snapshot requires space and degrades performance during the backup and your method suffers neither of those disadvantages.

Thanks for the suggestion.