[Linux-cluster] RHCS TestCluster with ScientificLinux 5.2

[Rainer Schwierz]

Hello Lon,

could you please go a little bit more in detail?.
Each NFS filesystem has been exported only once, that means e.g. when I 
have activated service_nfs_home, service_nfs_home_fast was not active.
In all the tests IPtables on both servers has been stopped and all TCP 
and UDP traffic on the clients to and from the server's real IP and the 
servers service IPs have been accepted. I also see no significant 
difference to the document
"The Red Hat Cluster Suite NFS Cookbook" by Bob Peterson.

Thanks in advance & Cheers, Rainer

Lon Hohberger wrote:
> On Thu, 2009-09-17 at 07:30 +0200, Rainer Schwierz wrote:
>> Hello,
>>
>> hmm, meanwhile the fence_apc problem is fixed by a more recent version 
>> of fence_apc.
>>
>> But the nfs lock problem is still open. Does it mean I definitely 
>> should not use ScientificLinux and switch to Fedora 11 or RHEL5.4?
> 
> When doing a multi-export of the same NFS file system on top of GFS,
> lock recovery will not work correctly - there's no way to prevent a new
> GFS lock from being taken after a failure but before NFS has sent the
> lock reclaim notifications, nor is there a way for GFS to respect the
> NFS lock reclaim grace period.
> 
> I do not know why you would have this particular problem, though - locks
> shouldn't randomly "not work at all" just because you take them from a
> service IP address vs. the host's real IP.  Maybe there's some IPtables
> firewall rule in place ?
> 
> 
> -- Lon
> 
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| Rainer  Schwierz, Inst. f. Kern- und Teilchenphysik |
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