Hello all, /tmp/mmfs is being deleted every 10 days by a systemd service " systemd-tmpfiles-setup.service ". That service calls a configuration file " /usr/lib/tmpfiles.d/tmp.conf . What we did was add a drop in file in /etc/tmpfiles.d/tmp.conf to then create the directory /tmp/mmfs and then exclude deleting going forward. Here's our actual file and some commentary of what the options mean:
# cat /etc/tmpfiles.d/tmp.conf # Create a /tmp/mmfs directory d /tmp/mmfs 0755 root root 1s <-------- the " d " is to create directory x /tmp/mmfs/* <-------- the " x " says to ignore it That change helped us avoid /tmp/mmfs from being deleted every 10 days. In addition I think also did a %systemctl daemon-reload ( but I don't have it in my notes, wouldn't hurt to run it ) Hope this helps, Lior On Mon, Nov 8, 2021 at 7:00 AM <[email protected]> wrote: > Send gpfsug-discuss mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > > https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=slrrB7dE8n7gBJbeO0g-IQ&r=mpcjMHidaF8RcWRPB_iRCw&m=9QxnPQt1bSZxcCSYNtyRayTlYJXf34X5KKh3De5IgMDu-nH9CJqmaDSWLT8a55c6&s=vChJle7IBS3KbsRXb2h7akGKeDm_cjQUD6xeLHLSyDs&e= > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of gpfsug-discuss digest..." > > > Today's Topics: > > 1. /tmp/mmfs vanishes randomly? (Billich Heinrich Rainer (ID SD)) > 2. Re: /tmp/mmfs vanishes randomly? (Olaf Weiser) > 3. Re: /tmp/mmfs vanishes randomly? (Jonathan Buzzard) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 8 Nov 2021 09:20:24 +0000 > From: "Billich Heinrich Rainer (ID SD)" <[email protected]> > To: gpfsug main discussion list <[email protected]> > Subject: [gpfsug-discuss] /tmp/mmfs vanishes randomly? > Message-ID: <[email protected]> > Content-Type: text/plain; charset="utf-8" > > Hello, > > We use /tmp/mmfs as dataStructureDump directory. Since a while I notice > that this directory randomly vanishes. Mmhealth does not complain but just > notes that it will no longer monitor the directory. Still I doubt that > trace collection and similar will create the directory when needed? > > Do you know of any spectrum scale internal mechanism that could cause > /tmp/mmfs to get deleted? It happens on ESS nodes, with a plain IBM > installation, too. It happens just on one or two nodes at a time, it's no > cluster-wide cleanup or similar. We run scale 5.0.5 and ESS 6.0.2.2 and > 6.0.2.2. > > Thank you, > > Mmhealth message: > local_fs_path_not_found INFO The configured dataStructureDump path > /tmp/mmfs does not exists. Skipping monitoring. > > Kind regards, > > Heiner > --- > ======================= > Heinrich Billich > ETH Z?rich > Informatikdienste > Tel.: +41 44 632 72 56 > [email protected] > ======================== > > > > > > ------------------------------ > > Message: 2 > Date: Mon, 8 Nov 2021 09:53:04 +0000 > From: "Olaf Weiser" <[email protected]> > To: [email protected] > Cc: [email protected] > Subject: Re: [gpfsug-discuss] /tmp/mmfs vanishes randomly? > Message-ID: > <of2a5ebcf0.dd13f52d-on00258787.0035d664-00258787.00364...@ibm.com > > > Content-Type: text/plain; charset="us-ascii" > > An HTML attachment was scrubbed... > URL: < > https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_pipermail_gpfsug-2Ddiscuss_attachments_20211108_1d32c09e_attachment-2D0001.html&d=DwICAg&c=slrrB7dE8n7gBJbeO0g-IQ&r=mpcjMHidaF8RcWRPB_iRCw&m=9QxnPQt1bSZxcCSYNtyRayTlYJXf34X5KKh3De5IgMDu-nH9CJqmaDSWLT8a55c6&s=zpe2MuRXotkV_yDkY-UQSIE68CEBIWsRoj4Qya85nJU&e= > > > > ------------------------------ > > Message: 3 > Date: Mon, 8 Nov 2021 09:54:18 +0000 > From: Jonathan Buzzard <[email protected]> > To: [email protected] > Subject: Re: [gpfsug-discuss] /tmp/mmfs vanishes randomly? > Message-ID: <[email protected]> > Content-Type: text/plain; charset=utf-8; format=flowed > > On 08/11/2021 09:20, Billich Heinrich Rainer (ID SD) wrote: > > > Hello, > > > > We use /tmp/mmfs as dataStructureDump directory. Since a while I > > notice that this directory randomly vanishes. Mmhealth does not > > complain but just notes that it will no longer monitor the directory. > > Still I doubt that trace collection and similar will create the > > directory when needed? > > > > Do you know of any spectrum scale internal mechanism that could cause > > /tmp/mmfs to get deleted? It happens on ESS nodes, with a plain IBM > > installation, too. It happens just on one or two nodes at a time, > > it's no cluster-wide cleanup or similar. We run scale 5.0.5 and ESS > > 6.0.2.2 and 6.0.2.2. > > > > I know several Linux distributions clear the contents of /tmp at boot > time. Could that explain it? > > I would say using /tmp like you are doing is not a sensible idea anyway > and that you should be using something under /var. > > > 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 > > https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=slrrB7dE8n7gBJbeO0g-IQ&r=mpcjMHidaF8RcWRPB_iRCw&m=9QxnPQt1bSZxcCSYNtyRayTlYJXf34X5KKh3De5IgMDu-nH9CJqmaDSWLT8a55c6&s=vChJle7IBS3KbsRXb2h7akGKeDm_cjQUD6xeLHLSyDs&e= > > > End of gpfsug-discuss Digest, Vol 118, Issue 4 > ********************************************** >
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