Hey Olaf, We'll investigate as suggested. I'm hopeful the journald logs would provide some additional insight.
As for OFED versions, we use the same Mellanox version across the cluster and haven't seen any issues with working nodes that mount the filesystem. We also have a PMR open with IBM but we'll send a follow-up if we discover something more for group discussion. Thanks, Oluwasijibomi (Siji) Saula HPC Systems Administrator / Information Technology Research 2 Building 220B / Fargo ND 58108-6050 p: 701.231.7749 / www.ndsu.edu<http://www.ndsu.edu/> [cid:image001.gif@01D57DE0.91C300C0] ________________________________ From: gpfsug-discuss-boun...@spectrumscale.org <gpfsug-discuss-boun...@spectrumscale.org> on behalf of gpfsug-discuss-requ...@spectrumscale.org <gpfsug-discuss-requ...@spectrumscale.org> Sent: Tuesday, March 30, 2021 1:07 AM To: gpfsug-discuss@spectrumscale.org <gpfsug-discuss@spectrumscale.org> Subject: gpfsug-discuss Digest, Vol 110, Issue 34 Send gpfsug-discuss mailing list submissions to gpfsug-discuss@spectrumscale.org To subscribe or unsubscribe via the World Wide Web, visit http://gpfsug.org/mailman/listinfo/gpfsug-discuss or, via email, send a message with subject or body 'help' to gpfsug-discuss-requ...@spectrumscale.org You can reach the person managing the list at gpfsug-discuss-ow...@spectrumscale.org When replying, please edit your Subject line so it is more specific than "Re: Contents of gpfsug-discuss digest..." Today's Topics: 1. Filesystem mount attempt hangs GPFS client node (Saula, Oluwasijibomi) 2. Re: Filesystem mount attempt hangs GPFS client node (Olaf Weiser) ---------------------------------------------------------------------- Message: 1 Date: Mon, 29 Mar 2021 18:38:00 +0000 From: "Saula, Oluwasijibomi" <oluwasijibomi.sa...@ndsu.edu> To: "gpfsug-discuss@spectrumscale.org" <gpfsug-discuss@spectrumscale.org> Subject: [gpfsug-discuss] Filesystem mount attempt hangs GPFS client node Message-ID: <ph0pr08mb6598f1a7bc557225d417d8c998...@ph0pr08mb6598.namprd08.prod.outlook.com> Content-Type: text/plain; charset="utf-8" Hello Folks, So we are experiencing a mind-boggling issue where just a couple of nodes in our cluster, at GPFS boot up, get hung so badly that the node must be power reset. These AMD client nodes are diskless in nature and have at least 256G of memory. We have other AMD nodes that are working just fine in a separate GPFS cluster albeit on RHEL7. Just before GPFS (or related processes) seize up the node, the following lines of /var/mmfs/gen/mmfslog are noted: 2021-03-29_12:47:37.343-0500: [N] mmfsd ready 2021-03-29_12:47:37.426-0500: mmcommon mmfsup invoked. Parameters: 10.12.50.47 10.12.50.242 all 2021-03-29_12:47:37.587-0500: mounting /dev/mmfs1 2021-03-29_12:47:37.590-0500: [I] Command: mount mmfs1 2021-03-29_12:47:37.859-0500: [N] Connecting to 10.12.50.243 tier1-sn-02.pixstor <c0n2> 2021-03-29_12:47:37.864-0500: [I] VERBS RDMA connecting to 10.12.50.242 (tier1-sn-01.pixstor) on mlx5_0 port 1 fabnum 0 sl 0 index 0 2021-03-29_12:47:37.864-0500: [I] VERBS RDMA connecting to 10.12.50.242 (tier1-sn-01) on mlx5_0 port 1 fabnum 0 sl 0 index 1 2021-03-29_12:47:37.866-0500: [I] VERBS RDMA connected to 10.12.50.242 (tier1-sn-01) on mlx5_0 port 1 fabnum 0 sl 0 index 0 2021-03-29_12:47:37.867-0500: [I] VERBS RDMA connected to 10.12.50.242 (tier1-sn-01) on mlx5_0 port 1 fabnum 0 sl 0 index 1 2021-03-29_12:47:37.868-0500: [I] Connected to 10.12.50.243 tier1-sn-02 <c0n2> There have been hunches that this might be a network issue, however, other nodes connected to the IB network switch are mounting the filesystem without incident. I'm inclined to believe there's a GPFS/OS-specific setting that might be causing these crashes especially when we note that disabling the automount on the client node doesn't result in the node hanging. However, once we issue mmmount, we see the node seize up shortly... Please let me know if you have any thoughts on where to look for root-causes as I and a few fellows are stuck here ? Thanks, Oluwasijibomi (Siji) Saula HPC Systems Administrator / Information Technology Research 2 Building 220B / Fargo ND 58108-6050 p: 701.231.7749 / www.ndsu.edu<http://www.ndsu.edu/> [cid:image001.gif@01D57DE0.91C300C0] -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss/attachments/20210329/4ce36267/attachment-0001.html> ------------------------------ Message: 2 Date: Tue, 30 Mar 2021 06:06:54 +0000 From: "Olaf Weiser" <olaf.wei...@de.ibm.com> To: gpfsug-discuss@spectrumscale.org Cc: gpfsug-discuss@spectrumscale.org Subject: Re: [gpfsug-discuss] Filesystem mount attempt hangs GPFS client node Message-ID: <of4ff5120b.5e2b3de7-on002586a8.0021023a-002586a8.00219...@notes.na.collabserv.com> Content-Type: text/plain; charset="us-ascii" An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss/attachments/20210330/ae3c3cdd/attachment.html> ------------------------------ _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss End of gpfsug-discuss Digest, Vol 110, Issue 34 ***********************************************
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