[Users] Data Center Non Responsive / Contending

[Liron Aravot]

----- Original Message -----
> From: "Giorgio Bersano" <giorgio.bersano at gmail.com>
> To: "Liron Aravot" <laravot at redhat.com>
> Cc: "Meital Bourvine" <mbourvin at redhat.com>, "users at ovirt.org" <Users at ovirt.org>, fsimonce at redhat.com
> Sent: Wednesday, March 5, 2014 1:19:34 PM
> Subject: Re: [Users] Data Center Non Responsive / Contending
> 
> 2014-03-04 22:35 GMT+01:00 Liron Aravot <laravot at redhat.com>:
> >
> >
> > ----- Original Message -----
> >> From: "Giorgio Bersano" <giorgio.bersano at gmail.com>
> >> To: "Liron Aravot" <laravot at redhat.com>
> >> Cc: "Meital Bourvine" <mbourvin at redhat.com>, "users at ovirt.org"
> >> <Users at ovirt.org>, fsimonce at redhat.com
> >> Sent: Tuesday, March 4, 2014 6:10:27 PM
> >> Subject: Re: [Users] Data Center Non Responsive / Contending
> >>
> >> 2014-03-04 16:37 GMT+01:00 Liron Aravot <laravot at redhat.com>:
> >> >
> >> >
> >> > ----- Original Message -----
> >> >> From: "Giorgio Bersano" <giorgio.bersano at gmail.com>
> >> >> To: "Liron Aravot" <laravot at redhat.com>
> >> >> Cc: "Meital Bourvine" <mbourvin at redhat.com>, "users at ovirt.org"
> >> >> <Users at ovirt.org>, fsimonce at redhat.com
> >> >> Sent: Tuesday, March 4, 2014 5:31:01 PM
> >> >> Subject: Re: [Users] Data Center Non Responsive / Contending
> >> >>
> >> >> 2014-03-04 16:03 GMT+01:00 Liron Aravot <laravot at redhat.com>:
> >> >> > Hi Giorgio,
> >> >> > Apperantly the issue is caused because there is no connectivity to
> >> >> > the
> >> >> > export domain and than we fail on spmStart - that's obviously a bug
> >> >> > that
> >> >> > shouldn't happen.
> >> >>
> >> >> Hi Liron,
> >> >> we are reaching the same conclusion.
> >> >>
> >> >> > can you open a bug for the issue?
> >> >> Surely I will
> >> >>
> >> >> > in the meanwhile, as it seems to still exist - seems to me like the
> >> >> > way
> >> >> > for
> >> >> > solving it would be either to fix the connectivity issue between vdsm
> >> >> > and
> >> >> > the storage domain or to downgrade your vdsm version to before this
> >> >> > issue
> >> >> > was introduced.
> >> >>
> >> >>
> >> >> I have some problems with your suggestion(s):
> >> >> - I cannot fix the connectivity between vdsm and the storage domain
> >> >> because, as I already said, it is exposed by a VM by this very same
> >> >> DataCenter and if the DC doesn't goes up, the NFS server can't too.
> >> >> - I don't understand what does it mean to downgrade the vdsm: to which
> >> >> point in time?
> >> >>
> >> >> It seems I've put myself - again - in a situation of the "the egg or
> >> >> the chicken" type, where the SD depends from THIS export domain but
> >> >> the export domain isn't available if the DC isn't running.
> >> >>
> >> >> This export domain isn't that important to me. I can throw it away
> >> >> without any problem.
> >> >>
> >> >> What if we edit the DB and remove any instances related to it? Any
> >> >> adverse consequences?
> >> >>
> >> >
> >> > Ok, please perform a full db backup before attempting the following:
> >> > 1. right click on the the domain and choose "Destory"
> >> > 2. move all hosts to maintenance
> >> > 3. log in into the database and run the following sql command:
> >> > update storage_pool where id = '{you id goes here}' set
> >> > master_domain_version = master_domain_version + 1;
> >> > 4. activate a host.
> >>
> >> Ok Liron, that did the trick!
> >>
> 
> Just for the record, the correct command was this one:
> 
> update storage_pool  set master_domain_version = master_domain_version + 1
> where id = '{your id goes here}' ;
> 
> Best regards,
> Giorgio.

Giorgio,
I've added the following patch to resolve the issue: http://gerrit.ovirt.org/#/c/25424/
Have you opened the bug for it? if so, please provide me the bug number so i could assign the patch to it.
Thanks.
> 
> >> Up and running again, even that VM supposed to be the server acting as
> >> export domain.
> >>
> >> Now I've to run away as I'm late to a meeting but tomorrow I'll file a
> >> bug regarding this.
> >>
> >> Thanks to you and Meital for your assistance,
> >> Giorgio.
> >
> > Sure, happy that everything is fine!
> >>
>