[lustre-discuss] Suspended jobs and rebooting lustre servers

[Colin Faber]

Can you provide more details on your upgrade strategy? In some cases
expanding your storage shouldn't impact client / job activity at all.

On Wed, Feb 20, 2019, 11:09 AM Raj Ayyampalayam <ansraj at gmail.com> wrote:

> Hello,
>
> We are planning on expanding our storage by adding more OSTs to our lustre
> file system. It looks like it would be easier to expand if we bring the
> filesystem down and perform the necessary operations. We are planning to
> suspend all the jobs running on the cluster. We originally planned to add
> new OSTs to the live filesystem.
>
> We are trying to determine the potential impact to the suspended jobs if
> we bring down the filesystem for the upgrade.
> One of the questions we have is what would happen to the suspended
> processes that hold an open file handle in the lustre file system when the
> filesystem is brought down for the upgrade?
> Will they recover from the client eviction?
>
> We do have vendor support and have engaged them. I wanted to ask the
> community and get some feedback.
>
> Thanks,
> -Raj
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