I’ve needed the same sort of thing — we use NHC to check for FS status and we’ve had cases that we were not able to detect because they were in this “Stale file handle” state. GPFS doesn’t always seem to behave in the way Linux would expect.
> On Aug 9, 2019, at 2:03 PM, Frederick Stock <[email protected]> wrote: > > Are you able to explain why you want to check for stale file handles? Are > you attempting to detect failures of some sort, and why do the existing > mechanisms in GPFS not provide the functionality you require? > > Fred > __________________________________________________ > Fred Stock | IBM Pittsburgh Lab | 720-430-8821 > [email protected] > > > ----- Original message ----- > From: Alexander John Mamach <[email protected]> > Sent by: [email protected] > To: "[email protected]" <[email protected]> > Cc: > Subject: [EXTERNAL] [gpfsug-discuss] Checking for Stale File Handles > Date: Fri, Aug 9, 2019 1:46 PM > > Hi folks, > > We’re currently investigating a way to check for stale file handles on the > nodes across our cluster in a way that minimizes impact to the filesystem and > performance. > > Has anyone found a direct way of doing so? We considered a few methods, > including simply attempting to ls a GPFS filesystem from each node, but that > might have false positives, (detecting slowdowns as stale file handles), and > could negatively impact performance with hundreds of nodes doing this > simultaneously. > > Thanks, > > Alex > > Senior Systems Administrator > > Research Computing Infrastructure > Northwestern University Information Technology (NUIT) > > 2020 Ridge Ave > Evanston, IL 60208-4311 > > O: (847) 491-2219 > M: (312) 887-1881 > www.it.northwestern.edu > > _______________________________________________ > 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 _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
