Re: [gpfsug-discuss] 5.1.2.2 changes

Mon, 17 Jan 2022 10:21:40 -0800

We are working on a new & improved version of online fsck which will show up in upcoming releases. Stay tuned.
 
 
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Mathias Dietz
 
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----- Original message -----
From: "Simon Thompson" <[email protected]>
Sent by: [email protected]
To: "gpfsug main discussion list" <[email protected]>
Cc:
Subject: Re: [gpfsug-discuss] [External] 5.1.2.2 changes
Date: Mon, Jan 17, 2022 13:27
 

My guess is … they decided it was unsafe. I’m sure I’ve seen a few release notes that have referred to mmfsck and data corruption.

 

e.g.:

https://www.ibm.com/support/pages/ibm-spectrum-scale-alert-all-supported-versions-may-be-affected-issue-online-mmfsck-which-may-result-file-system-corruption

 

So maybe it was classified as too dangerous to leave in the field?

 

Simon

 

From: [email protected] <[email protected]> on behalf of Jonathan Buzzard <[email protected]>
Date: Friday, 14 January 2022 at 14:38
To: [email protected] <[email protected]>
Subject: Re: [gpfsug-discuss] [External] 5.1.2.2 changes

On 13/01/2022 17:39, [email protected] wrote:
[SNIP]
>
> The change that I noticed most was:
>
>          Repair functionality of mmfsck command in online mode is deprecated
>              The repair functionality of mmfsck command in online mode is no longer available. The report-only operation still works in the online mode.
>
> While I know that mmfsck is rarely needed and has gotten much faster, deprecating the ability to do any online repairs seems
> like a significant regression.
>

I would concur with that sentiment, and given it is a significant
regression I would suggest that it IBM should give an explanation as to
why functionality has been removed.

Been able to do online repairs on large file systems is when you need it
a complete life saver. It could be the difference between several days
of outage vs. end users not realizing there was even a problem.


JAB.

--
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG
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