Snapshots

MasterTH

Active Member
Jun 12, 2009
224
7
38
www.sonog.de
Hi,

nice work with 2.2. I've updated my lab-cluster and everything works fine.

I've a 3 node cluster-lab with replicated storage on two servers with drbd. ontop of this i setup nfs to share the storage. Nice. 5secs downtime on hardware failure (power plug).
But now there's the option to take a live-snapshot. Really cool feature that's seen in every other virtualization-solution but it only works with lvm. Isn't it possible to take snapshots without lvm?

Kind regards
MasterTH
 

spirit

Famous Member
Apr 2, 2010
5,861
702
133
www.odiso.com
lvm snapshots are only used for backup for now. (snapshot create,backup, snasphot delete), because they don't know in cluster (live migrate).


New proxmox snapshots works (currently) with : qcow2 file, sheepdog, ceph (rbd), nexenta.
 
how is this new snapshot any different from what we had?
as we speak, i've just created a snapshot on one of my VM, and VM is not responding at all. i'm on 2.1 btw. for me, snapshot usually takes half hour or longer, so you could say, it's not really snappy.
 

MasterTH

Active Member
Jun 12, 2009
224
7
38
www.sonog.de
this snapshot is like snapshots in vmware, virtualbox, hyperv, ... You can snapshot the current state of the system without suspending your VM oder dealing with lvm snapshots.

The really cool thing is, when you plan to install updates or new features to a server you can snapshot the state first, then do the update and when something goes wrong, just switch back to the state before the snapshot. But you should delete the snapshot when your installation or upgrade is done, otherwise you waste space
 
this snapshot is like snapshots in vmware, virtualbox, hyperv, ... You can snapshot the current state of the system without suspending your VM oder dealing with lvm snapshots.

The really cool thing is, when you plan to install updates or new features to a server you can snapshot the state first, then do the update and when something goes wrong, just switch back to the state before the snapshot. But you should delete the snapshot when your installation or upgrade is done, otherwise you waste space

ahh finally! thought this day would never come!

now the hard part, upgrading 2.1 to 2.2. how safe is it to upgrade?
 

MasterTH

Active Member
Jun 12, 2009
224
7
38
www.sonog.de
hmm... i can't tell you how it is in production. i tested the upgrade procedure in my test-lab with only 2 VServers running, everything worked fine.
In production i started with a complete fresh installation because i build up a new cluster so i didn't had to upgrade
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!