SSD Cache on PVE Server

[Carlos M. De Matos]

I have 4x servers each with an aging Dell Perc 5x controller with 512Mb cache. I want to install a Linux SSD cache solution over the top of this, just for kicks. There are plenty of sub $60 SSD drives and one for each server sounds just the trick.

I imagine the solution would use b-cache or dm-cache, but the outdated kernel (2.6.32) does not look good for this.

Is there a solution?

 

[wolfgang]

Hi Carlos,

if you don't use VZContainers, then you can upgrade to 3.10 Kernel.

 

[starkruzr]

Wait, what? Is this new information? Is there a guide on how this is done without breaking things somewhere?

 

[tom]

3.10 was introduce in 3.2 (see http://pve.proxmox.com/wiki/Roadmap#Proxmox_VE_3.2)

> apt-get install pve-kernel-3.10.0-5-pve

but there is no openvz in 3.10, therefore 2.6.32 is still the default for Proxmox VE 3.3.

 

[starkruzr]

That's great, thank you. I have no interest in OpenVZ so this is great news for me.

 

[mmenaz]

I'm also interested. Once you have completed and tested your setup, could you please report back here how to enable ssd cache, tricks or special configuration you put in place, and/or tutorials you have followed? Maybe also a wiki page would be great. Thanks in advance.