[gpfsug-discuss] Creation time

[Jez Tucker]

Allo

See gpfs_set_times_path() in gpfs.h

Best,

Jez


On 01/10/2026 14:34, Jonathan Buzzard via gpfsug-discuss wrote:
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On 01/10/2026 14:22, Ahmed Essam Mahrous Gaber Elmazaty via gpfsug-
discuss wrote:

In addition to rsync, we have migrated to GPFS using AFM and it
preserves all the metadata including modification timestamps Best
regards,
If it does then a GPFS API must exist even if undocumented for modifying
it. However I don't think it does.

Note that creation/birth time is not POSIX and GPFS only acquired it in
version 3.2 from memory, at the same time as MS-DOS attributes were
added. Presumably added as part of being able to mount GPFS on Windows,
with the fun fact you needed a GPFS file system created under 3.2 or
later to do so.

It is a common misconception that ctime is a creation time, it is in
fact the time you last changed permissions.

I am talking about the "Creation Time" as reported by mmlsattr -L or on
XFS the Birth time you see on when stating the file.


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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--
Jez Tucker
VP Product Development

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jtucker at pixitmedia.com<mailto:jtucker at pixitmedia.com>

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