[torqueusers] Upgrade from 2.1.*

[Joshua Bernstein]

David,

As Sarah point out, there are problems with doing that large of an 
upgrade while jobs are running. As you know, the job data structure has 
changed quite a bit from 2.1 to 2.4, and thus currently running jobs are 
detected as corrupted, and generally unpredictable things seem to 
happen. More often then not, when pbs_server starts back up it sees 
these jobs, but isn't able to correctly process them, and thus they get 
lost or worse, sometimes get killed. My advice would be to do the 
upgrade only after draining the system of of jobs. It some cases when a 
complete drain isn't an option, I've done this using a rolling upgrade 
with two pbs_server and two sets of pbs_mom's running

-Joshua Bernstein
Penguin Computing

David Beer wrote:
> Hi all,
> 
> I'm wondering if anyone out there has experience upgrading from TORQUE 2.1.* to 2.3.*, 2.4.*, etc.? We have a customer that is planning to do this, and he's curious what challenges he is likely to face in upgrading.
> 
> Thanks for any help on this,
>