Best practice partition & LVM for KVM
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Hi all,
If I have :
- raid 1 4TB Sata 7200 rpm
- raid 1 1TB SSD
What is the best practice partition and mount point for above configuration?
I want to utilize ssd for VM that required high IOPs and the rest will be on SATA.Is it ok if i do like this :
LVG : vg_ssd_critical_vm
/vm (ssd)LVG : vg_sata_non_critical_vm
/boot 2GB
/bootBIOS 1GB
/root (ALL remaining space)
/swap (32GB)I plan to install centos with KVM and ovirt on Sata Raid. Should i also separate the host on different partition / LV?
Do I need to spare some free space for LVM snapshot?
All guru please advise... thanks
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@kuyaz said in Best practice partition & LVM for KVM:
Hi all,
If I have :
- raid 1 4TB Sata 7200 rpm
- raid 1 1TB SSD
What is the best practice partition and mount point for above configuration?
I want to utilize ssd for VM that required high IOPs and the rest will be on SATA.Is it ok if i do like this :
LVG : vg_ssd_critical_vm
/vm (ssd)LVG : vg_sata_non_critical_vm
/boot 2GB
/bootBIOS 1GB
/root (ALL remaining space)
/swap (32GB)I like to make root it's own smallish partition when talking large amounts of storage. It shouldn't require all that much space. I like 50GB, but that's more than is really required often times.
/biosBOOT should be MB, not GB.
I plan to install centos with KVM and ovirt on Sata Raid. Should i also separate the host on different partition / LV?
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.
Do I need to spare some free space for LVM snapshot?
If you want to take a snapshot of one of the LVMs, then yes.
All guru please advise... thanks
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@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.
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@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.
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@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.
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@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.
That looks like a decent web-based management tool. Does it need installed on the host tho?
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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:
@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.
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@travisdh1 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.
That looks like a decent web-based management tool. Does it need installed on the host tho?
No, but you can (known as self-hosted). You can also make the oVirt Engine HA between two hosts.
The other way is to run the oVirt Engine as a VM on another host, and connect the nodes to it.
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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:
@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.
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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
