[Linux-cluster] (new) problems with qdisk, running test rpms

[Frederik Ferner]

Hi Lon,

thanks for your reply.

Unfortunately I'm currently not in a position to test this at the 
moment. I really should get myself a proper test setup :-(

Before I try the next time, I have one small detail to clarify here.

Lon Hohberger wrote:
> On Wed, May 02, 2007 at 02:44:06PM +0100, Frederik Ferner wrote:

>> With the new version of qdiskd it seems the heuristics are not tested 
>> anymore after it reaches a sufficient score once. When the outside 
>> network is lost qdiskd on both server still claim the same score in the 
>> status file and both servers report the votes for the qdisk to cman.

> Hmm, could you add 'tko="1"' to your cluster.conf for the heuristics?  I
                       ^^^^^^^
> wonder if it's an initialization problem.

>> If qdiskd is started while the outside network is unreachable the scores 
>> start without the scores for the failing heuristics. Once network is 
>> restored the score jumps to at least the minimum required for operation 
>> and once again stays there.

> This seems to work for me:
> 
> [10538] debug: Heuristic: 'ping 192.168.79.254 -c1 -t3' missed (1/3)
> [10538] debug: Heuristic: 'ping 192.168.79.254 -c1 -t3' missed (2/3)
> [10538] info: Heuristic: 'ping 192.168.79.254 -c1 -t3' DOWN (3/3)
> [10537] notice: Score insufficient for master operation (0/11;
> required=6); downgrading
> 
> Message from syslogd at green at Mon May  7 10:36:43 2007 ...
> green clurgmgrd[7305]: <emerg> #1: Quorum Dissolved 
> 
> (machine rebooted)

[snip]

> Hmm, try adding tko="3" to each of your ping heuristics, like this:
                   ^^^^^^^

Is this the same suggestion as above (tko="1")? In any case I'll try 
that next time I get a chance.

Many thanks,
Frederik
-- 
Frederik Ferner		
Linux Systems Administrator		phone: +44 1235 77 8624
Diamond Light Source Ltd.		mob:   +44 7917 08 5110