1:40 p.m.
Hi
There is one additional option you didn't realized:
- Add new hosts to the same DC/Cluster and add the new NAS appliance as a second Storage
Domain.
This approach will make it easier to live migrate your running VMs to new hosts allowing
you to power off old servers. Also, having the the new Storage Domain available, you can
storage live migrate (move) all virtual disks from old TrueNas to the new device.
Important: for the storage live migration, make sure the "Wipe after delete"
option is not set at the virtual disk level and at the Storage Domain level. I saw some
threads on an ovirt telegram group about corrupting virtual disks when these options are
enabled.
Anyway, from the options available (new deployment, new cluster on same deployment, adding
hosts/storage to the existing deployment), my preferred is to create a new deployment from
scratch, export existing VMs as OVA files, then import them on the new deployment. The
benefit is to have everything still available in the old deployment, the down side is to
have a downtime to run the export/import process.
Marcos
-----Original Message-----
From: gbigras--- via Users <users(a)ovirt.org>
Sent: Tuesday, October 29, 2024 12:28 PM
To: users(a)ovirt.org
Subject: [External] : [ovirt-users] Need advice before building a new oVirt Environment
My question will be down below but before that here is some background info:
I currently have a functioning oVirt env (v4.5.7) with two self-hosted nodes (hand-me-down
servers) and shared storage (TrueNAS server) with three data domains: one for the
EngineVM (iSCSI), one for the VMs (iSCSI) and one for ISO files (NFS).
The powers that be, want to move away from TrueNAS and hand-me-downs and have new servers
and a new NAS appliance (most likely NetApp). They are the ones who did not want to spend
the money on new gear but now they have changed their minds. I wish that I could have
started my oVirt env on the new equipment. This new equipment will take at best 2 months
to arrive. In the meantime, I have to create various VMs in my existing environment.
Once my new gear arrives, what is the recommended approach:
1 - Start from scratch with a new datacenter/cluster env? Can I migrate VMs from one DC
to another? The docs seem to say no. I'm guessing, I would have to export first,
then import.
2 - Can my new equipment be part of the same DC but a different cluster?
I was thinking that option #2 is the right approach. I could start with storage (ie: new
NetApp) as part of the new cluster. Once that is part of the cluster, I can add hosts
then finally migrate VMs.
What say you?
thank you in advance.
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