We are running 2.12.1, which we've been running for more then a year now. A reboot of the OST cleaned it up.
________________________________ From: Nathan Dauchy - NOAA Affiliate <[email protected]> Sent: Wednesday, February 17, 2021 4:36 PM To: Kurt Strosahl <[email protected]>; [email protected] <[email protected]> Subject: [EXTERNAL] Re: [lustre-discuss] Disabling max creates and migrating data doesn't seem to be reducing the usage on an OST On Tue, Feb 16, 2021 at 9:46 AM Kurt Strosahl <[email protected]<mailto:[email protected]>> wrote: During a maintenance window today I revooted the OSS that OST had been mounted on, after it came up the usage dropped significantly Kurt, That behavior you describe sounds a bit like issues reported on this list a while back: Data migration from one OST to anther http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/2019-March/016304.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.lustre.org_pipermail_lustre-2Ddiscuss-2Dlustre.org_2019-2DMarch_016304.html&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=a1-ymUluZsecMceDMlAHsomwMJl4Iqg-UcfvwQZVldk&m=X_1B-IbTpYA22WlaUxdusP5_08yu4Lvz_dt5QzFBWKA&s=d-i1qo1qsCY7jYzjFeW9A4kNcFrAXHyXLJfwEqdrjb4&e=> Migrating files doesn't free space on the OST http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/2019-January/016196.html<https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.lustre.org_pipermail_lustre-2Ddiscuss-2Dlustre.org_2019-2DJanuary_016196.html&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=a1-ymUluZsecMceDMlAHsomwMJl4Iqg-UcfvwQZVldk&m=X_1B-IbTpYA22WlaUxdusP5_08yu4Lvz_dt5QzFBWKA&s=Du1WbV3eVdCTx_rSxxuC4zfNSq0Jne8mUTMkD8MimZI&e=> I thought that those problems were addressed in more recent versions of Lustre though. Perhaps someone else can verify that. You aren't running a very old version, are you? Hope this helps, Nathan ________________________________ From: Iannetti, Gabriele <[email protected]<mailto:[email protected]>> Sent: Tuesday, February 16, 2021 10:02 AM To: Kurt Strosahl <[email protected]<mailto:[email protected]>>; [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Subject: [EXTERNAL] Re: Disabling max creates and migrating data doesn't seem to be reducing the usage on an OST Hi Kurt, one more thing... The I-Node count should not increase, since new files should not be created on that OST. You can check the I-Node count with `lfs df -i | grep "\[OST:15\]"`. Modifications on existing files are still possible e.g. file increases in it's size... ~Gabriele ________________________________________ From: lustre-discuss <[email protected]<mailto:[email protected]>> on behalf of Kurt Strosahl <[email protected]<mailto:[email protected]>> Sent: Thursday, February 11, 2021 16:51 To: [email protected]<mailto:[email protected]> Subject: [lustre-discuss] Disabling max creates and migrating data doesn't seem to be reducing the usage on an OST Good Morning, One of the OSTs in a lustre file system I manage is showing a higher usage. I attempted to stop writes by setting the max_create_count to zero and then moving data off it but that doesn't seem to be working. > lfs df | grep OST:15lustre19-OST000f_UUID 71145018368 62653382656 8491631616 > 89% /lustre19[OST:15] MDS> lctl set_param osp.lustre19-OST000f*.max_create_count=0 MDS> lctl get_param osp.lustre19-OST000f*.max_create_count losp.lustre19-OST000f-osc-MDT0000.max_create_count=0 lfs find /lustre19/expphy/volatile --ost lustre19-OST000f -size +50M | lfs_migrate -y I've been watching it, and the ost in question isn't shrinking. I can see its size usage go down a bit... and then tick up a bit w/r, Kurt J. Strosahl System Administrator: Lustre, HPC Scientific Computing Group, Thomas Jefferson National Accelerator Facility _______________________________________________ lustre-discuss mailing list [email protected]<mailto:[email protected]> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.lustre.org_listinfo.cgi_lustre-2Ddiscuss-2Dlustre.org&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=a1-ymUluZsecMceDMlAHsomwMJl4Iqg-UcfvwQZVldk&m=X_1B-IbTpYA22WlaUxdusP5_08yu4Lvz_dt5QzFBWKA&s=CYaDwh1tEObhElOTvys0Y6vBBY3ZvKKrTRSD7WfV5iw&e=>
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