[Linux-cluster] CLVM performance

[Andrew Holway]

On Oct 24, 2012, at 5:01 PM, Heiko Nardmann wrote:

> Am 24.10.2012 16:38, schrieb Andrew Holway:
>> Hello,
>> 
>> Ive been doing some testing.
>> I have an iSCSI device that I have set up with CLVM. 
>> I have 4 physical hosts, all with top of the range xeons and 144GB ram. 
>> I have 12 KVM machines per physical machine with a total of 48 VMs.
>> Each KVM is mounted on a LV.
>> The performance is not very good.
>> I am not a fish.
>> 
>> Could CLVM be the bottleneck? Especially with so many LV's?
>> I though I would ask before I set up 48 physical luns on the iSCSI device :)
>> 
>> Thanks,
>> 
>> Andrew
>> 
>> 
>> 
>> 
> Looks like you should open a ticket with RedHat and give them/us some
> more infos (including expected perf. vs. experienced perf., cluster
> configuration) ...

That would be tricky! We don't have Redhat subscription!

In any case, Im just interested if it *could* be a problem. I will have to test this with no CLVM before I can open a ticket somewhere.

Ta,

Andrew

> 
> Kind regards,
> 
>    Heiko
>