[gpfsug-discuss] question on viewing block distribution across NSDs

Greg.Lehmann at csiro.au Greg.Lehmann at csiro.au
Thu Mar 30 00:51:37 BST 2017


Thanks. I don't have a snap. I'll keep that in mind for next time I do this.

From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Knister, Aaron S. (GSFC-606.2)[COMPUTER SCIENCE CORP]
Sent: Thursday, 30 March 2017 9:45 AM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] question on viewing block distribution across NSDs

Hi Greg,

You could run an mmdf which will show you how full each NSD is. I'm not sure how to look back in time though to see the fs before the restripe. Do you perhaps have a gpfs.snap you took somewhat recently before the restripe? Maybe an internaldump in /tmp/mmfs somewhere?

From: greg.lehmann at csiro.au<mailto:greg.lehmann at csiro.au>
Sent: 3/29/17, 19:21
To: gpfsug main discussion list
Subject: [gpfsug-discuss] question on viewing block distribution across NSDs
Hi All,
               I added some NSDs to an existing filesystem and ran mmrestripefs. I was sort of curious to see what the distribution looked like before and after the restripe. Is there any way of looking at it?

Cheers,

Greg.
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