Hmm. Well, I used to take care of the cluster at the Naval Postgraduate
School, and I would always upgrade both. When we went to 7, it was on
the Luster servers first (the nodes were on 6).
The only thing I could guess is a FUD factor (Fear-Uncertainty-Doubt).
We did several kernel upgrades without an issue.
I expect the concern is about data loss, but the path has been traveled
by many very large instances, so with a proper plan, there is no worry.
Brian Andrus
On 10/8/2017 4:42 AM, Jones, Peter A wrote:
Hmm. Perhaps one of the end user sites will speak up with something
that they have tried successfully but I cannot think of anyone that I
have heard running RHEL 5.x on the Lustre servers but RHEL 7.x on the
Lustre clients. Why os there a reluctance to upgrade the OS on the
storage servers? Is it older storage not supported on supported with
newer version of RHEL?
On 2017-10-07, 10:59 PM, "lustre-discuss on behalf of Amjad Syed"
<[email protected]
<mailto:[email protected]> on behalf of
[email protected] <mailto:[email protected]>> wrote:
Hello,
We have an existing HPC running Lustre 1.8.7 on RHEL 5.4
The Lustre servers (MDS and OSS) are all running RHEL 5.4
The Lustre clients(HPC compute nodes) are also running RHEL 5.4
Now the management has decided to upgrade the compute nodes to RHEL 7.
But they do not want to upgrade the OS of Lustre Servers which is
still RHEL 5.4
So the question is will this configuration work where the Lustre
clients are RHEL 7 and Lustre server are all running RHEL 5.4?
Thanks.
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