Re: [Lustre-discuss] Virtualization and Lustre

2010-06-10 Thread Cliff White
On 05/20/2010 08:03 PM, Tyler Hawes wrote:
 Has there been any testing or conclusions regarding the use of virtualization 
 and Lustre, or is this even possible considering how Lustre is coded? I've 
 gotten used to the idea of virtualization for all our other servers, where it 
 is great to know we can mount the image on another host very quickly if a 
 hardware problem brings down a machine, and it seems the same would be nice 
 with Lustre...

 Tyler Hawes
 Lit Post
 www.litpost.com


We do virtualization routinely. Should be no issues. In fact, use of 
KVM/VMware/Virtual box for local testing is quite common among Lustre devs.

However, we really like to be close to the metal for performance 
reasons.  I would not use visualization in a production environment 
where performance was crucial.  I am also not certain how well 
high-performance networking does in a virtual server - we make heavy use 
of RDMA when available.

cliffw



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Re: [Lustre-discuss] Virtualization and Lustre

2010-05-21 Thread Sebastian Reitenbach
Hi,
On Friday 21 May 2010 05:03:20 am Tyler Hawes wrote:
 Has there been any testing or conclusions regarding the use of
 virtualization and Lustre, or is this even possible considering how Lustre
 is coded? I've gotten used to the idea of virtualization for all our other
 servers, where it is great to know we can mount the image on another host
 very quickly if a hardware problem brings down a machine, and it seems the
 same would be nice with Lustre...
I do this for the MGS and MDS hosts in our cluster on SLES 11. Just took the 
xen kernel and applied the patches and built rpms like it is described in the 
manual. 
My OSS servers are configured with lustre failover on physical machines, 
managed by pacemaker.

cheers,
Sebastian

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[Lustre-discuss] Virtualization and Lustre

2010-05-20 Thread Tyler Hawes
Has there been any testing or conclusions regarding the use of virtualization 
and Lustre, or is this even possible considering how Lustre is coded? I've 
gotten used to the idea of virtualization for all our other servers, where it 
is great to know we can mount the image on another host very quickly if a 
hardware problem brings down a machine, and it seems the same would be nice 
with Lustre...

Tyler Hawes
Lit Post
www.litpost.com



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