[ovirt-users] ovirt+gluster+NFS : storage hicups

[Nicolas Ecarnot]

Hi Vered,

Thanks for answering.

Le 06/08/2015 11:08, Vered Volansky a écrit :

>> But from times to times, there seem to appear a severe hicup which I
>> have great difficulties to diagnose.
>> The messages in the web gui are not very precise, and not consistent:
>> - some tell about some host having network issues, but I can ping it
>> from every place it needs to be reached (especially from the SPM and the
>> manager)
> Ping doesn't say much as the ssh protocol is the one being used.
> Please try this and report.

Try what?

> Please attach logs (engine+vdsm). Log snippets would be helpful (but more important are full logs).

I guess that what will be most useful is to provide logs at or around 
the precise moment s**t is hitting the fan.
But this is very difficult to forecast :
There are times I'm trying hard to break it (see dumb user tests 
previously described) and oVirt is doing well at coping with these 
situations.
And at the opposite, there are times where even zero VM is running, and 
I see the DC appearing as non operational for some minutes.
So I'll send logs the next time I see such situation.

>
> In general it smells like an ssh/firewall issue.

On this test setup, I disabled the firewall on my hosts.
And you're right, it appears I forgot to disable it on one of the three 
hosts.
On the one I forgot, a brief look at the iptables rules seemed like very 
conform with what I'm use to see as managed by oVirt, nothing weird. 
Anyway, it is now completely disabled.

>
>> "On host serv-vm-al01, Error: Network error during communication with
>> the Host"

This host had no firewall activated...

-- 
Nicolas ECARNOT