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 _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
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