Re: AW: [Xen-users] Deploying redhat clusters under Xen 3.0.2

[carlopmart <carlopmart@xxxxxxxxx>]

Christopher,

 What do you mean when you say: "First, don't let dom0 manage any of 
the storage"?? i need to setup vbds for virtual storage on dom0 machine, 
because this host have all disks!!! ...

 Using w! param only on virtual storage shared disks, both nodes can 
write at the same time using GFS???

Christopher G. Stach II wrote:
> I had CLVM, CMAN, CCS, and GFS set up on a development Xen cluster.  I 
> just got rid of Xen because we were needed the full machine performance. 
>  Basically, we were going in the opposite direction that virtualization 
> is. :)  It worked fine most of the time, but there are some things I 
> would do differently.  First, don't let dom0 manage any of the storage. 
>  Use one of GNBD, iSCSI, AoE, etc. and dedicated private network cards 
> for each domain.  I wouldn't even bother bridging vifs.  Second, use the 
> new credit scheduler.  If you decide to not take this advice, expect to 
> be turning your CMAN timeouts way up when you find your domains stalling 
> and getting fenced multiple times a day. :)  It would be nice if the 
> dom0 <-> domU traffic worked so fence_xen functioned.  If you can't get 
> it to work, say hello to fence_manual.  Not fun.
--
CL Martinez
carlopmart {at} gmail {d0t} com

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