[lustre-discuss] upgrading from 2.5.2 to 2.9

[E.S. Rosenberg]

We went 2.5.x > 2.7.0 > 2.8.0

Now I'm eyeing 2.9.0 but as far as I understood it involves going to CentOS
7.x which in and of itself I don't mind but does mean I want to test it on
a test setup which I lack currently....

HTH,
Eli

On Wed, Mar 29, 2017 at 4:23 PM, Anjana Kar <kar at psc.edu> wrote:

> Hi,
>
> Has anyone upgraded lustre servers from 2.5.x to 2.9?
>
> Our setup is one MDS (ldiskfs) hosting two MDTs, and one OSS (zfs OSTs)
>
> running version 2.5.2 on Centos 6.x for two lustre filesystems, ~350TB.
>
> Recently writes from a 2.9 client has been crashing the MDS, which prompted
>
> us to look into the upgrade path. Is this upgrade feasible, and if so, is
> there
>
> documentation we can follow for backing up the MDS, and doing the upgrade.
>
> Thanks in advance,
>
> -Anjana Kar
>
>  Pittsburgh Supercomputing Center
>
>  kar at psc.edu
>
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