Re: [gpfsug-discuss] [External] 5.1.2.2 changes
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: gpfsug-discuss-boun...@spectrumscale.org on behalf of Jonathan Buzzard Date: Friday, 14 January 2022 at 14:38 To: gpfsug-discuss@spectrumscale.org Subject: Re: [gpfsug-discuss] [External] 5.1.2.2 changes On 13/01/2022 17:39, mark.berg...@uphs.upenn.edu 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 ___ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
Re: [gpfsug-discuss] [External] 5.1.2.2 changes
On 13/01/2022 17:39, mark.berg...@uphs.upenn.edu 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
Re: [gpfsug-discuss] [External] 5.1.2.2 changes
In the message dated: Thu, 13 Jan 2022 18:26:12 +0100, The pithy ruminations from "Hannappel, Juergen" on [[External] [gpfsug-discuss] 5.1.2.2 changes] were: => Hi, => just got notified that 5.1.2.2 is out. => What are the changes to 5.1.2.1? => https://www.ibm.com/docs/en/spectrum-scale/5.1.2?topic=summary-changes => does not specify that 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. => => -- => Dr. Jürgen Hannappel DESY/ITTel. : +49 40 8998-4616 => ___ => gpfsug-discuss mailing list => gpfsug-discuss at spectrumscale.org => http://gpfsug.org/mailman/listinfo/gpfsug-discuss => ___ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
