This means that the stripe group descriptor on the disk dcs3800u31b_lun7 is corrupted. As we maintain copies of the stripe group descriptor on other disks as well we can copy the good descriptor from one of those disks to this one. Please open a PMR and work with IBM support to get this fixed. Regards, The Spectrum Scale (GPFS) team ------------------------------------------------------------------------------------------------------------------ If you feel that your question can benefit other users of Spectrum Scale (GPFS), then please post it to the public IBM developerWroks Forum at https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479 . If your query concerns a potential software error in Spectrum Scale (GPFS) and you have an IBM software maintenance contract please contact 1-800-237-5511 in the United States or your local IBM Service Center in other countries. The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team. From: "Jeffrey R. Lang" <JRLang at uwyo.edu> To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org> Date: 03/27/2018 04:15 AM Subject: Re: [gpfsug-discuss] GPFS autoload - wait for IB portstobecomeactive Sent by: gpfsug-discuss-bounces at spectrumscale.org Can someone provide some clarification to this error message in my system logs: mmfs: [E] The on-disk StripeGroup descriptor of dcs3800u31b_lun7 sgId 0x0B00620A:9C84DF56 is not valid because of bad checksum: Mar 26 12:25:50 mmmnsd2 mmfs: 'mmfsadm writeDesc <device> sg 0B00620A:9C84DF56 2 /var/mmfs/tmp/sg_gscratch_dcs3800u31b_lun7', where device is the device name of that NSD. I’ve been unable to find anything while googling that provides any details about the error. Anyone have any thoughts or commands? We are using GPFS 4.2.3.-6, under RedHat 6 and 7. The NSD nodes are all RHEL 6. Any help appreciated. Thanks Jeff_______________________________________________ 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=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM2Sbon4Lbbi4w&m=3u8q7zs1oLvf23bMVLe5YO_0SFSILFiL1d85LRDp9aQ&s=lf2ivnySwvhLDS-AnJSbm6cWcpO2R-vdHOll5TvkBDU&e= -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20180327/670aab41/attachment.html>