Replicate locally store VM:s

[George Bredberg]

Hi,

I have set up fenced and HA and everything seems to work. We have some web-servers on a shared storage (nfs) and they migrate very nicely when the hypervisor goes down.

I have googled a lot to try to find a good way to replicate locally stored appliances, but not really found a working solution. What I want to do is to keep the appliances replicated between my proxmox servers (I have four of them, running Proxmox 3.1-3)

I have read about DRBD and similar, but they all demand a separate disk to share and I dont have that. (Im working at a school so money is scarse.) The disks have space enough for this to work though.

Are there any way to keep locally stored VM:s (not using containers) between proxmox servers so that they can start a bit quicker in case of failure? We need them to be local due to performance issues. These locally stored appliances does not change much though. The users does not store anything on them. They run thin clients at the school and user dirs are mounted on the NAS via ldap from the appliances.

Hope anyone could give me a pointer where to look. Regards /G

 

[stavros]

If the connection between your servers is good enough, DRBD works just fine, since you do not need separate disks, you can simply create logical volumes on each disk and create a DRBD block device from those.