[gpfsug-discuss] What NSDs does a file have blocks on?

[Bryan Banister]

I know we are trying to be helpful, but suggesting that admins mess with undocumented, dangerous commands isn’t a good idea.  If directed from an IBM support person with explicit instructions, then good enough, IFF it’s really required and worth the risk!

I think the Kum’s suggestions are definitely a right way to handle this.

In general, avoid running ts* commands unless directed by somebody that knows exactly what they are doing and understands your issue in great detail!!

Just a word to the wise.. 2 cents… etc,
-Bryan

From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Marc A Kaplan
Sent: Tuesday, July 10, 2018 8:09 AM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] What NSDs does a file have blocks on?

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As long as we're giving hints...
Seems tsdbfs has several subcommands that might be helpful.
I like "inode"
But there's also "listda"
Subcommand "desc" will show you the structure of the file system under "disks:" you will see which disk numbers are which NSDs.

Have fun, but DO NOT use the any of the *patch* subcommands!



From:        Simon Thompson <S.J.Thompson at bham.ac.uk<mailto:S.J.Thompson at bham.ac.uk>>
To:        gpfsug main discussion list <gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>>
Date:        07/09/2018 05:21 PM
Subject:        Re: [gpfsug-discuss] What NSDs does a file have blocks on?
Sent by:        gpfsug-discuss-bounces at spectrumscale.org<mailto:gpfsug-discuss-bounces at spectrumscale.org>
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I was going to say something like that … e.g.



blockaddr 563148261

Inode 563148261 snap 0 offset 0 N=2  1:45255923200  13:59403784320

1: and 13: in the output are the NSD disk devices for inode 563148261



Simon



From: <gpfsug-discuss-bounces at spectrumscale.org<mailto:gpfsug-discuss-bounces at spectrumscale.org>> on behalf of "makaplan at us.ibm.com<mailto:makaplan at us.ibm.com>" <makaplan at us.ibm.com<mailto:makaplan at us.ibm.com>>
Reply-To: "gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>" <gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>>
Date: Monday, 9 July 2018 at 22:04
To: "gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>" <gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>>
Subject: Re: [gpfsug-discuss] What NSDs does a file have blocks on?



(psss... )  tsdbfs

Not responsible for anything bad that happens...!

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