Hi Brock, thanks for your answers!

On Wed, Jul 7, 2021 at 2:12 PM Brock Palen <[email protected]> wrote:
>
> Assuming your using the default sg driver that most LTO drives use as opposed 
> to something like ibm lintape,

It does, yes.

> look at the tapestat  command,  it should show your tape drive throughput, 
> look for pauses or very large fluxtuations in performance (drive compression 
> may make this more difficult).  If your spool storage is fast enough you 
> should see performance close to the drive streaming performance  assuming no 
> compression.

Very useful, thanks! It seems tape metric support for the Prometheus
node exporter is in the works,
https://github.com/prometheus/node_exporter/pull/2044, so I will use
that for now - but the idea is exactly what you are proposing, just
through another tool.

Thanks!

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