[gpfsug-discuss] Handling bad file names in policies?

Alec anacreo at gmail.com
Fri Oct 8 20:36:03 BST 2021

Why not just configure a file placement policy using a non existent pool or
a bad encryption key to prevent files with non-printables characters from
even being created in the first place.


On Fri, Oct 8, 2021, 11:49 AM Wahl, Edward <ewahl at osc.edu> wrote:

> This goes back as far as I can recall to <=GPFS 3.5 days. And no, I cannot
> recall what version of TSM-EE that was.   But newline has been the only
> stopping point, for what seems like forever.
> Having filed many an mmbackup bug, I don't recall ever crashing on
> filenames.  (tons of OTHER reasons, but not character set)   We even
> generate an error report from this and email users to fix it.
> We accept basically almost everything else, and I have to say, we see some
> really crazy things sometimes.   I think my current favorite is the full
> windows paths as a filename.
> (eg:  "Y:\Temp\temp\290\work\0\Material_ERTi-5.in" )
> Current IBM documentation doesn't go backwards past 4.2 but it says:
> "For IBM Spectrum Scale™ file systems with special characters frequently
> used in the names of files or directories, backup failures might occur.
> Known special characters that require special handling include: *, ?, ", ’,
> carriage return, and the new line character.
> In such cases, enable the Tivoli Storage Manager client options
> WILDCARDSARELITERAL and QUOTESARELITERAL on all nodes that are used in
> backup activities and make sure that the mmbackup option --noquote is used
> when invoking mmbackup."
> So maybe we could handle newlines somehow.   But my lazy searches didn't
> show what TSM doesn't accept.
> Ed Wahl
> -----Original Message-----
> From: gpfsug-discuss-bounces at spectrumscale.org <
> gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Jonathan Buzzard
> Sent: Monday, October 4, 2021 7:29 PM
> To: gpfsug-discuss at spectrumscale.org
> Subject: Re: [gpfsug-discuss] Handling bad file names in policies?
> On 04/10/2021 23:23, Wahl, Edward wrote:
> > I know I've run into this before way back, but my notes on how I
> > solved this aren't getting the job done in Scale and my notes
> > are from 3.5.  😉
> > Anyone know a way to get a LIST policy to properly feed bad filenames
> > into the output or an external script?
> >
> > When I say bad I mean things like control characters, spaces, etc.
> > Not concerned about the dreaded 'newline' as we force users to fix
> > those or the files do not get backed up in Tivoli.
> >
> Since when? Last time I checked which was admittedly circa 2008, TSM would
> backup files with newlines in them no problem. mmbackup on the other hand
> in that time frame would simply die and backup nothing if there was a
> single file on the file system with a newline in it.
> I would take a look at the mmbackup scripts which can handle such stuff
> (least ways in >4.2) which would also suggest dsmc can handle it.
> As an aside I now think I know how you end up with newlines in file names.
> Basically you cut and paste the file name complete with newlines (most
> likely at the end) into a text field when saving the file.
> Personally I think any program should baulk at that point but what do I
> know.
> 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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