Re: [HPDD-discuss] bringing deactivated ost back online
-----Original Message-----
From: hpdd-discuss-bounces(a)lists.01.org [mailto:hpdd-discuss-
bounces(a)lists.01.org] On Behalf Of Kurt Strosahl
Sent: Wednesday, May 08, 2013 8:08 AM
To: hpdd-discuss(a)ml01.01.org
Subject: [HPDD-discuss] bringing deactivated ost back online
Good Morning,
Hey Kurt! Nice to see you on the list - it's actually beginning to feel like
'old home' week here. ;)
A bit of back story... several months ago one of my OSSs
encountered a
hardware error and had to be returned to the vendor. It came back, and was
intact (the vendor hadn't touched the hard drive). So now I've brought one
of the OSTs online (one of six) and we are encountering some unusual
issues. I set the OST to active using the conf_param and now some of the
clients are picking it up, while others are not. I was able to force a client to
see it by unmounting and remounting lustre... but this would be awkward to
do for every client (~1100) as they are currently in use.
I guess the first (obvious) question is:
Is there anything different among the clients? Version of Lustre, configuration, current
workloads? Looking for the low hanging fruit that might help our engineers.
Also, can you comment on which version of Lustre is in use - both clients and servers?
Thanks, Brett
w/r,
Kurt J. Strosahl
System Administrator
Scientific Computing Group, Thomas Jefferson National Accelerator Facility
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Brett Lee
Sr. Systems Engineer
Intel High Performance Data Division