Thanks Sven … We found a node with kswapd running 100% (and swap was off)… Killing that node made access to the FS spring into life. Simon From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of "oehmes at gmail.com" <oehmes at gmail.com> Reply-To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org> Date: Tuesday, 27 November 2018 at 16:14 To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org> Subject: Re: [gpfsug-discuss] Hanging file-systems 1. are you under memory pressure or even worse started swapping . -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20181127/de9879e3/attachment.html>