> > From: Jason Keltz <j...@cse.yorku.ca> > To: users@ovirt.org > Subject: [Users] RAID1 mirror on ovirt-node + engine nfs server > Message-ID: <51d5a06e.10...@cse.yorku.ca> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hi. > > I've been reading about ovirt, and ready to try my own experiments with > it. I have two small questions.. > > When an ovirt-node is installed from the standard ISO, there's no > mention in the documentation about setting up a RAID1 mirror for the > root disk on the node. I'm sure that once I get around to working out > kickstarting the node, I could easily install the raid1 mirror, but I'm > just wondering why I don't see that in the default ISO. Maybe I'm just > missing something. Is redundancy of the disk on the node not > important? Sure, if the node goes down, I guess the VMs could be run on > other nodes, but if we can prevent the node from going down in the first > place, then why not? > > Kickstarting the Node is an interesting proposition, but not one that the current image is well-suited for. Nor is support for mdraid devices, to be honest. It's something worth considering (whether btrfs redundancy or mdraid), but it's not currently implemented to my knowledge. I could be wrong about that.
I also have a question about the storage backend. In particular, I have > a pretty powerful server that I intend to use as the NFS server, and a > few servers to use as nodes. On the other hand, I don't have a powerful > machine (at the moment) to use for the ovirt-engine. Would it be poor > practice to run the ovirt-engine ON the NFS server? During engine > setup, I see that you can setup an NFS share for ISOs from the > ovirt-engine, but I don't think there's mention of just generalized > storage there. I suspect it's "poor practice", but I thought I'd ask > anyway. My setup will be relatively small (say, 4 nodes), and this > would let me reduce 1 general server from the infrastructure (dedicated > ovirt-engine). > I run the engine virtualized as a guest on the NFS server. This is definitely a workable use case, especially for small environments.
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