[Linux-cluster] virtual machine failover with gfs

matt whiteley whiteley at pdx.edu
Wed Jun 25 22:51:53 UTC 2008

I have spent lots of hours trying different setups and reading the  
documentation already so I hope this isn't a faq as I am new to the  

I read the Red Hat Magazine article on this topic[1], but have come to  
realize that it might not be exactly what I am going for. I want to  
have a group of nodes that run a group of virtual machines with  
automated failover. I set things up how the article described but  
realized I didn't want the gfs mount in the fstab file. I would like  
the gfs mount described in the cluster.conf file so that as nodes are  
added or removed the mount will follow the changes (I know about the 1  
journal per node so have created a few extra already). When I add a  
service to mount the gfs resource, it only gets mounted on one node as  
is to be expected thinking in terms of other resources.

I started thinking about this and it almost seems like gfs is  
unnecessary. Should I have a file system per virtual machine that  
wouldn't need to be gfs since only one node will ever run a virtual  
machine at a time? Then mount/umount the file system as the virtual  
machine was migrated in the cluster?

It seems like I am missing something about how this should be setup  
and I would really appreciate any tips or ideas. I will include my  
cluster.conf in case it provides any more info.

As a side note, what is with all the errors from system-config- 
kickstart telling me my config file is invalid if it was generated by  
conga. Both versions are updated to the newest available.

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[1] http://www.redhatmagazine.com/2007/08/23/automated-failover-and-recovery-of-virtualized-guests-in-advanced-platform/

matt whiteley <whiteley at pdx.edu>

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