[Linux-cluster] linux cluster and virtualization - shared xend-config.sxp

[Gunther Schlegel]

Aaron,

> The documentation provided via the conga cluster recipe (Add a virtual 
> machine as a clustered service 
> <http://sourceware.org/cluster/conga/cookbook/VMs_as_services>) states that:
> 
> 1) "Both xen config files [e.g. xend-config-sxp] and VM disk images must 
> be located on shared storage, with identical mount paths for each node"
> 
> and then on the next slide states:
> 
> 2) "Xend must be running on each node, and MUST BE STARTED BEFORE THE 
> CMAN CLUSTER DAEMON"
> 
 > ...
> 
> The only other documentation I found for this 
> setup: http://magazine.redhat.com/2007/08/23/automated-failover-and-recovery-of-virtualized-guests-in-advanced-platform/ 
> says absolutely nothing about system service startup order and includes 
> an example of a cluster node reboot.
> 
> So, my question is this; is the default ordering of system service 
> startup (cman < xend) workable with virtual machines defined as cluster 
> services?

It works fine in the normal startup order. xend has to be started before 
rgmanager and after cman.

best regards, Gunther

-- 
Gunther Schlegel
Manager IT Infrastructure


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