We hit something like this due to a bug in gskit. We all thought it was networking at first and it took me a fair bit of time to check all that. We have 7 nsd servers and around 400 clients running 4.2.0.4. We are just trying a workaround now that looks promising. The bug will be fixed at some point.
Cheers, Greg From: [email protected] [mailto:[email protected]] On Behalf Of Matt Thorpe Sent: Tuesday, 25 October 2016 11:06 PM To: gpfsug main discussion list <[email protected]> Subject: Re: [gpfsug-discuss] Forcing which node gets expelled? Hi Bob, That is exactly what I was after, thanks very much! Should buy us a little time so we can resolve our networking issue. Thanks again Matt. From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Oesterlin, Robert Sent: 25 October 2016 13:23 To: gpfsug main discussion list <[email protected]<mailto:[email protected]>> Subject: Re: [gpfsug-discuss] Forcing which node gets expelled? If you look at /usr/lpp/mmfs/samples/expelnode.sample you can use this as a base and install this in /var/mmfs/etc on the cluster manager. You can control which of the two nodes get expelled. We use it here to send an alert when a node is expelled. There is also "mmexpelnode" which you can force a particular node to be expelled. Bob Oesterlin Sr Principal Storage Engineer, Nuance From: <[email protected]<mailto:[email protected]>> on behalf of Matt Thorpe <[email protected]<mailto:[email protected]>> Reply-To: gpfsug main discussion list <[email protected]<mailto:[email protected]>> Date: Tuesday, October 25, 2016 at 7:05 AM To: gpfsug main discussion list <[email protected]<mailto:[email protected]>> Subject: [EXTERNAL] [gpfsug-discuss] Forcing which node gets expelled? Hi, We are in the process of diagnosing a networking issue that is causing 2 of our 6 node GPFS cluster to expel each other (it appears they experience a temporary network connection outage and lose contact with each other). At present it's not consistent which gets expelled by the cluster manager, and I wondered if there was any way to always force a specific node to be expelled in this situation? Thanks and best regards, Matt -------- Matt Thorpe | BDLSS Systems Administrator Bodleian Libraries Osney One Building, Osney Mead, Oxford, OX2 0EW [email protected]<mailto:[email protected]> | 01865 (2)80027 _______________________________________________ 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=CwICAg&c=djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=LPDewt1Z4o9eKc86MXmhqX-45Cz1yz1ylYELF9olLKU&m=Q_f6z64tvENxA9ac7rqWFj2jNd5IrpWEXcynJzHFjz4&s=jqso6xVB-V_zgLba-xjlWwiw3fNRan9NspsVq4PY4nA&e=
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