[OpenAFS] Weird Quorum Issues

[Stephen Jones]

Our AFS cell experienced a similar problem several years ago.  The
problem was a "large" time drift between the AFS servers.  If you're not
running some type of network time service to keep them synchronized,
check the time on the servers to see how close they are.  If they're not
close, set them and see whether or not the "No Quorum Elected" problem
goes away.

Steve

On Wed, 2003-11-05 at 21:50, Aaron Stanley wrote:
> I was away from my cluster for two days and when I got back I noticed some
> very odd behavior with volumes locking for replication and not getting
> unlocked like normal.  When I would issue a vos unlock for the volumes that
> were locked I got strange errors like:
> 
> u: No Quorum Elected
> Error in vos unlock command
> 
> If I continued to re-run the command, eventually the volume would unlock.  I
> noticed this behavior with vos create, vos release, and vos backup as well.
> 
> I ran a udebug on all three of my vl servers for both ports 7002 and 7004.
> On the primary (largest) fileserver, the output would waffle between the
> normal "I am sync site" and the not normal "I am not sync site".  I thought
> at first that it might be a network issue, but pings between servers was
> great and bandwith was not an issue.
> 
> At this point, I don't know what could be causing the primary server to,
> sort of, lose its quorum every second or so, so I'm hoping someone on the
> list might be able to point in a direction.  I didn't notice anything
> strange in the logs, but perhaps I'm looking in the wrong place so any hints
> there would be appreciated.
> 
> I tried culling the list archives for a similar problem report, but I
> couldn't find anybody describing a situation where sometimes the quorum was
> present, but then a second or two later it was gone.
> 
> I truly appreciate any ideas and/or help.  Thanks!
> 
>  - AB
-- 
Stephen Jones <Stephen.Jones@Rose-Hulman.Edu>
Rose-Hulman Institute of Technology