Best practice partition & LVM for KVM
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@kuyaz said in Best practice partition & LVM for KVM:
LVG : vg_ssd_critical_vm
/vm (ssd)
LVG : vg_sata_non_critical_vm
/boot 2GB
/bootBIOS 1GB
/root (ALL remaining space)
/swap (32GB)I'd use XFS. Don't use EXT4. You're correct with using LVM.
I'd go like this:
LVG : vg_ssd_critical_vm
/DATAssdLVG : vg_sata_non_critical_vm
/DATAhdd (xfs)
/boot 2GB (xfs)
/bootBIOS 1GB
/root 50GB (xfs)
/swap 32GB (swap)
/home whatever (xfs)As @travisdh1 said, you'll need space for snapshots of the LVMs, but don't do it for the VMs. Use VM snapshots for those instead.
You're VMs should be RAW (.img) for better performance.
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@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@travisdh1 said in Best practice partition & LVM for KVM:
Why CentOS instead of Fedora Server? It's a relatively recent change in recommendation around here, but most of us prefer Fedora Server over CentOS. CentOS packages are just getting old and untenable for anything other than legacy software.
Because oVirt will be installed on it, and it requires CentOS.
Fedora has been supported at least as recently as Fed 24.
As a node, yes.
But for oVirt Engine, he'll need to use CentOS.
No, as the engine. The client goes on all Fedora.
I know for a 100% fact you cannot use the oVirt Engine on Fedora. It does not work. I tried that first, even though Fedora is not listed as a supported OS for the oVirt Engine.
But you can run oVirt nodes on Fedora.
They had it listed as working on the oVirt site, that's where I looked it up.
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@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@travisdh1 said in Best practice partition & LVM for KVM:
Why CentOS instead of Fedora Server? It's a relatively recent change in recommendation around here, but most of us prefer Fedora Server over CentOS. CentOS packages are just getting old and untenable for anything other than legacy software.
Because oVirt will be installed on it, and it requires CentOS.
Fedora has been supported at least as recently as Fed 24.
As a node, yes.
But for oVirt Engine, he'll need to use CentOS.
No, as the engine. The client goes on all Fedora.
I know for a 100% fact you cannot use the oVirt Engine on Fedora. It does not work. I tried that first, even though Fedora is not listed as a supported OS for the oVirt Engine.
But you can run oVirt nodes on Fedora.
They had it listed as working on the oVirt site, that's where I looked it up.
It wouldn't install for me, unless I just couldn't find the correct repo... but I tried.
https://www.ovirt.org/download/
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I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
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The only recent fedora repos I see are for ovirt-node, not the engine.
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@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
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@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
Missed that... would you use FC24 to control your datacenter, and for how long? I'd rather use something I know will stay supported or at least stay current. It seems it only is with CentOS/RHEL. So I'd use CentOS for the oVirt Engine and Fedora for each oVirt Node.
But that's not what the OP is doing. It looks like he's going to do a self-hosted install of oVirt Engine, if that's the case, I'd go with the most recent most stably supported way, and that happens to be CentOS or RHEL.
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@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
Missed that... would you use FC24 to control your datacenter, and for how long? I'd rather use something I know will stay supported or at least stay current. It seems it only is with CentOS/RHEL. So I'd use CentOS for the oVirt Engine and Fedora for each oVirt Node.
But that's not what the OP is doing. It looks like he's going to do a self-hosted install of oVirt Engine, if that's the case, I'd go with the most recent most stably supported way, and that happens to be CentOS or RHEL.
no, but it's clearly been on Fedora from time to time. I wonder why they are doing it like that.
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@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
Missed that... would you use FC24 to control your datacenter, and for how long? I'd rather use something I know will stay supported or at least stay current. It seems it only is with CentOS/RHEL. So I'd use CentOS for the oVirt Engine and Fedora for each oVirt Node.
But that's not what the OP is doing. It looks like he's going to do a self-hosted install of oVirt Engine, if that's the case, I'd go with the most recent most stably supported way, and that happens to be CentOS or RHEL.
no, but it's clearly been on Fedora from time to time. I wonder why they are doing it like that.
No idea... you know I'd much rather use Fedora. But having to start with FC24 reminds me of technical debt in a way.
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@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
Missed that... would you use FC24 to control your datacenter, and for how long? I'd rather use something I know will stay supported or at least stay current. It seems it only is with CentOS/RHEL. So I'd use CentOS for the oVirt Engine and Fedora for each oVirt Node.
But that's not what the OP is doing. It looks like he's going to do a self-hosted install of oVirt Engine, if that's the case, I'd go with the most recent most stably supported way, and that happens to be CentOS or RHEL.
no, but it's clearly been on Fedora from time to time. I wonder why they are doing it like that.
No idea... you know I'd much rather use Fedora. But having to start with FC24 reminds me of technical debt in a way.
It is, but having oVirt only on CentOS 7 feels like that, too
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@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
Missed that... would you use FC24 to control your datacenter, and for how long? I'd rather use something I know will stay supported or at least stay current. It seems it only is with CentOS/RHEL. So I'd use CentOS for the oVirt Engine and Fedora for each oVirt Node.
But that's not what the OP is doing. It looks like he's going to do a self-hosted install of oVirt Engine, if that's the case, I'd go with the most recent most stably supported way, and that happens to be CentOS or RHEL.
no, but it's clearly been on Fedora from time to time. I wonder why they are doing it like that.
No idea... you know I'd much rather use Fedora. But having to start with FC24 reminds me of technical debt in a way.
It is, but having oVirt only on CentOS 7 feels like that, too
Not 7.0... CentOS 7 or 7.x
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@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
I seen an FC22 repo, but that's using oVirt 3.6 and is way old.
FC24 repos for 4.1
Missed that... would you use FC24 to control your datacenter, and for how long? I'd rather use something I know will stay supported or at least stay current. It seems it only is with CentOS/RHEL. So I'd use CentOS for the oVirt Engine and Fedora for each oVirt Node.
But that's not what the OP is doing. It looks like he's going to do a self-hosted install of oVirt Engine, if that's the case, I'd go with the most recent most stably supported way, and that happens to be CentOS or RHEL.
no, but it's clearly been on Fedora from time to time. I wonder why they are doing it like that.
No idea... you know I'd much rather use Fedora. But having to start with FC24 reminds me of technical debt in a way.
It is, but having oVirt only on CentOS 7 feels like that, too
Not 7.0... CentOS 7 or 7.x
Patched, but still old. Not something I want as my hypervisor base.
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Patched and most recent CentOS, plus most recent stable oVirt I think is better than running old Fedora plus old oVirt.
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@tim_g said in Best practice partition & LVM for KVM:
Patched and most recent CentOS, plus most recent stable oVirt I think is better than running old Fedora plus old oVirt.
Right, better, but I don't count it as good. I'm saying that CentOS doesn't offer something I'm happy with for KVM.
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@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
Patched and most recent CentOS, plus most recent stable oVirt I think is better than running old Fedora plus old oVirt.
Right, better, but I don't count it as good. I'm saying that CentOS doesn't offer something I'm happy with for KVM.
Then don't run KVM on it. You can set up some CentOS VM for only oVirt Engine. Then you can set up your Fedora KVM hypervisors with oVirt Node to do the hypervising.
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@tim_g said in Best practice partition & LVM for KVM:
@scottalanmiller said in Best practice partition & LVM for KVM:
@tim_g said in Best practice partition & LVM for KVM:
Patched and most recent CentOS, plus most recent stable oVirt I think is better than running old Fedora plus old oVirt.
Right, better, but I don't count it as good. I'm saying that CentOS doesn't offer something I'm happy with for KVM.
Then don't run KVM on it. You can set up some CentOS VM for only oVirt Engine. Then you can set up your Fedora KVM hypervisors with oVirt Node to do the hypervising.
OIC, it can be a pure oVirt VM, KVM still on Fedora?
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Yes.. I just thought of something...
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@tim_g said in Best practice partition & LVM for KVM:
Yes.. I just thought of something...
What's taht?
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I'd have to verify, but maybe one could set up a Fedora hypervisor, and run a CentOS VM on it for oVirt Engine... and oVirt Node on the Fedora host?
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Technically that's not self-hosted.... so I think that would work.
I mean as far as what they consider self-hosted.
