[evla-sw-discuss] Lustre work on Wednesday

[Ken Sowinski]

On Mon, 15 Sep 2014, James Robnett wrote:

>
> This Wednesday I need to make a change to the Lustre network name for the 
> Infiniband(IB) network from o2ib0 to o2ib1.  Currently both the AOC and VLA 
> IB networks are named o2ib0 which is confusing the NGAS nodes which mount 
> both Lustres but only the AOC one over IB.
>
> I'll need roughly an hour, either 9am to 10am or 10am to 11am(1).  If nobody 
> has a preference I'll probably do it from 10 to 10am.

Either of these would be a good time.  We expect that Kerry will be
struggling with CRM and the correlator Wednesday morning and that
nothing else will be happening.  In particualar CBE and telcal will
be idle and can be stopped.

Jeb


> During the work the CBE nodes will need to be down, telcal will need to be 
> stopped on mchammer and mctest (so I can umount lustre) and ingestion will 
> need to be disabled on the NGAS node (again so I can umount lustre).
>
> Once I've made the changes I'll see that the CBE nodes, mchammer and mctest 
> are working as expected.  Then I'll likely need to reboot the NGAS nodes to 
> change how they mount lustre.
>
> John do we need to put a notice on the archive page saying it will be 
> unavailable ?  Should only be down long enough to reboot.
>
> James
> 1) If it needs to be some other time just let me know.
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