Re: [PATCH / RFC] nfs-utils: High Availability NFS

[Paul Clements <paul.clements@steeleye.com>]

Greg Banks wrote:
> On Mon, Aug 30, 2004 at 10:25:11AM +0200, Olaf Kirch wrote:

>>Doesn't a HA NFS deployment require a shared disk anyway?
> 
> 
> Shared data disks, not a shared root disk.
> 
> 
>>Why not just
>>move /var/lib/nfs to this file system so it gets shared the same way you
>>share the rest of your data?
> 
> 
> This would have to be done manually on a per-site basis because you
> can't predict where the mountpoint of any particular shared disk will
> be when NFS starts.  So packaging an HA solution based on that
> arrangement would be a mite tricky.

You also cannot support active/active configurations when /var/lib/nfs 
is linked (or mounted) to a shared location. That is our primary reason 
for needing the callouts. Specifically, in order to support 
active/active configurations, either you've got to broadcast the 
information to all cluster nodes or you've got to "shadow" the 
/var/lib/nfs contents on shared storage.

--
Paul


-------------------------------------------------------
This SF.Net email is sponsored by BEA Weblogic Workshop
FREE Java Enterprise J2EE developer tools!
Get your free copy of BEA WebLogic Workshop 8.1 today.
http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs