LVM, ZFS, snapshots etc

D

dcrobinson

New Member
Dec 5, 2010
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Malvern, UK
www.36arn.co.uk
I've read lots of threads and have been struggling since upgrading to PVE4.0 3 days ago. I am now very confused!

I read in one that you are currently adding snapshot backups to LVM storage.

1. Does this mean that if I have a directory storage with ext4+LVM I will be able to do snapshot backups of running KVM and LXC VMs?
2. When will this be ready?

If I understand what I've read correctly, I can create a ZFS pool and add it as a ZFS storage for KVM and LXC, so long as I mount it under /rpool?

3. Is that correct?
4. Do I use storage type "directory" or "ZFS" when I create the storage?

Thanks.
 
dcrobinson said:
I've read lots of threads and have been struggling since upgrading to PVE4.0 3 days ago. I am now very confused!

I read in one that you are currently adding snapshot backups to LVM storage.

1. Does this mean that if I have a directory storage with ext4+LVM I will be able to do snapshot backups of running KVM and LXC VMs?
Click to expand...

LXC snapshot backups are using the storage snapshot capability. Currently Ceph and ZFS. LVM will follow in a future release (it will be available when its ready)
KVM live backups works with all storage types.

see http://pve.proxmox.com/wiki/Backup_and_Restore

dcrobinson said:
2. When will this be ready?

If I understand what I've read correctly, I can create a ZFS pool and add it as a ZFS storage for KVM and LXC, so long as I mount it under /rpool?

3. Is that correct?
4. Do I use storage type "directory" or "ZFS" when I create the storage?

Thanks.
Click to expand...

ZFS
 
I tried that but couldn't get LXC to work (and I had to change the caching on KVM machines, IIRC). I've given up trying to get it to work, and so I'm temporarily using the "unsupported" mdadm RAID10 with LVM/ext4. I'll move to ZFS at another time.

I can live without live snapshots of LXC, because my critical VMs are KVM.
 
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