LVM Layout for working Snapshots?

[chris121212]

Hey guys,

i'm currently evaluating pve 4.x for a new Server.
Got a lot of openvz Containers which should be transfered to that new machine. I'm struggeling with my lvm/partition Layout because i wanna do snapshot backups.
This is my original setup:
https://www.evernote.com/shard/s221...377777cb17ad/11c7736b1eefd5c0617193da9b0494cb

I wanna make this working:
http://www.evernote.com/shard/s221/...273e08cf9b8d/56700bcefd087355f993e0629a5b8fa0

I already tried to add a new vg, lv on md8 and started the backup - but the manager says:
INFO: mode failure - some volumes do not support snapshots
INFO: trying 'suspend' mode instead

What is the right layout for my Issue?

Gratz chris

 

[ned]

Did you use lvm thin volumes?

 

[chris121212]

Hey,

no just mounted the fs under HGST Sata as a folder.

 

[ned]

You need FS support for snapshots...either lvm thin pool or zfs. Did not try zfs only lvm thin pools.

 

[chris121212]

Ok, i changed my whole setup to:
http://www.evernote.com/shard/s221/...e359202388b7/c5bbdeb1e59535b193b52b5605763369

Snapshots working great now. Thx
But I'm not sure about the performance and reliability of zfs... well I'll do some long term experience tests.

 

[ned]

Never tried zfs myself. Please report back. You can always use lvm thin volumes with ext4 and have snapshots. So you have 2 disk what kind of raid?