[gpfsug-discuss] GPFS inside OpenStack guests

[orlando.richards at ed.ac.uk]

On Wed, 19 Nov 2014, Simon Thompson (Research Computing - IT Services) wrote:

>
> I was asking this question at the gpfs forum on Monday at sc, but there didn't seem to be much in how wr could do it.
>
> One of the suggestions was to basically use nfs, or there is the Manilla compnents of Openstack coming, but still that isn't really true gpfs access.
>

NFS should be easy enough - but you can lose a lot of the gpfs good-ness 
by doing that (acl's, cloning, performance?, etc).

> I did wonder about virtio, but whether that would work with gpfs passed from the hosting system.

I was more looking for something fairly native - so that we don't have to, 
for example, start heavily customising the hypervisor stack. In fact - if 
you're pushing out to a third-party service provider cloud (and that could 
be your internal organisation's cloud run as a separate service) then you 
don't have that option at all.

I've not dug into virtio much in a basic kvm hypervisor, but one of the 
guys in EPCC has been trying it out. Initial impressions (once he got it 
working!) were tarred by terrible performance. I've not caught up with how 
he got on after that initial look.


>
> Simon
> ________________________________________
> From: gpfsug-discuss-bounces at gpfsug.org [gpfsug-discuss-bounces at gpfsug.org] on behalf of Orlando Richards [orlando.richards at ed.ac.uk]
> Sent: 19 November 2014 16:35
> To: gpfsug-discuss at gpfsug.org
> Subject: [gpfsug-discuss] GPFS inside OpenStack guests
>
> Hi folks,
>
> Does anyone have experience of running GPFS inside OpenStack guests, to
> connect to an existing (traditional, "bare metal") GPFS filesystem
> owning cluster?
>
> This is not using GPFS for openstack block/image storage - but using
> GPFS as a "NAS" service, with openstack guest instances as as a "GPFS
> client".
>
>
> ---
> Orlando
>
>
>
>
> --
>             --
>        Dr Orlando Richards
> Research Facilities (ECDF) Systems Leader
>        Information Services
>    IT Infrastructure Division
>        Tel: 0131 650 4994
>      skype: orlando.richards
>
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.
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-- 
             --
        Dr Orlando Richards
Research Facilities (ECDF) Systems Leader
        Information Services
    IT Infrastructure Division
        Tel: 0131 650 4994
      skype: orlando.richards

The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.