Ah be careful! looking at the man page for mmchconfig “nsdCksumTraditional:
https://www.ibm.com/support/knowledgecenter/STXKQY_5.0.1/com.ibm.spectrum.scale.v5r01.doc/bl1adm_mmchconfig.htm * Enabling this feature can result in significant I/O performance degradation and a considerable increase in CPU usage. Bob Oesterlin Sr Principal Storage Engineer, Nuance From: <[email protected]> on behalf of "Buterbaugh, Kevin L" <[email protected]> Reply-To: gpfsug main discussion list <[email protected]> Date: Friday, May 11, 2018 at 1:29 PM To: gpfsug main discussion list <[email protected]> Subject: [EXTERNAL] Re: [gpfsug-discuss] FYI, Spectrum Scale 5.0.1 is out On the other hand, we are very excited by this (from the README): File systems: Traditional NSD nodes and servers can use checksums NSD clients and servers that are configured with IBM Spectrum Scale can use checksums to verify data integrity and detect network corruption of file data that the client reads from or writes to the NSD server. For more information, see the nsdCksumTraditional and nsdDumpBuffersOnCksumError attributes in the topic mmchconfig command. Finally! Thanks, IBM (seriously)… Kevin On May 11, 2018, at 12:11 PM, Sanchez, Paul <[email protected]<mailto:[email protected]>> wrote: I’d normally be excited by this, since we do aggressively apply GPFS upgrades. But it’s worth noting that no released version of Scale works with the latest RHEL7 kernel yet (anything >= 3.10.0-780). So if you’re also in the habit of aggressively upgrading RedHat then you’re going to have to wait for 5.0.1-1 before you can resume that practice. From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> On Behalf Of Bryan Banister Sent: Friday, May 11, 2018 12:25 PM To: gpfsug main discussion list ([email protected]<mailto:[email protected]>) <[email protected]<mailto:[email protected]>> Subject: [gpfsug-discuss] FYI, Spectrum Scale 5.0.1 is out It’s on fix central, https://www-945.ibm.com/support/fixcentral<https://urldefense.proofpoint.com/v2/url?u=https-3A__na01.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Fwww-2D945.ibm.com-252Fsupport-252Ffixcentral-26data-3D02-257C01-257CKevin.Buterbaugh-2540vanderbilt.edu-257Cfba17a5bf8c54359d5a308d5b7636fc4-257Cba5a7f39e3be4ab3b45067fa80faecad-257C0-257C0-257C636616560077181684-26sdata-3D9PJJi3aWHak-252FZRO0CWxvV7XN5gOf2Mqdq573WMyH8lI-253D-26reserved-3D0&d=DwMGaQ&c=djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=LPDewt1Z4o9eKc86MXmhqX-45Cz1yz1ylYELF9olLKU&m=rAbpsTqYolOXLuyuZ65ElZ4D1J1uwvjRo1hevsn_2VU&s=juQOL76bpLnc5spOjlvmXisqA-fqosmHa5hCN1951-8&e=> Cheers, -Bryan ________________________________ Note: This email is for the confidential use of the named addressee(s) only and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you are hereby notified that any review, dissemination or copying of this email is strictly prohibited, and to please notify the sender immediately and destroy this email and any attachments. Email transmission cannot be guaranteed to be secure or error-free. The Company, therefore, does not make any guarantees as to the completeness or accuracy of this email or any attachments. This email is for informational purposes only and does not constitute a recommendation, offer, request or solicitation of any kind to buy, sell, subscribe, redeem or perform any type of transaction of a financial product. _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__spectrumscale.org_&d=DwMGaQ&c=djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=LPDewt1Z4o9eKc86MXmhqX-45Cz1yz1ylYELF9olLKU&m=rAbpsTqYolOXLuyuZ65ElZ4D1J1uwvjRo1hevsn_2VU&s=Rp4abiUOovsyI4GaSCSTFkvVfaDN7_NbYzD0jH1xQaU&e=> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss&data=02%7C01%7CKevin.Buterbaugh%40vanderbilt.edu%7Cfba17a5bf8c54359d5a308d5b7636fc4%7Cba5a7f39e3be4ab3b45067fa80faecad%7C0%7C0%7C636616560077181684&sdata=ymNFnAFOsfzWoFLXWiQMgaHdUKn9sAC8WMv4%2FNjCP%2B0%3D&reserved=0<https://urldefense.proofpoint.com/v2/url?u=https-3A__na01.safelinks.protection.outlook.com_-3Furl-3Dhttp-253A-252F-252Fgpfsug.org-252Fmailman-252Flistinfo-252Fgpfsug-2Ddiscuss-26data-3D02-257C01-257CKevin.Buterbaugh-2540vanderbilt.edu-257Cfba17a5bf8c54359d5a308d5b7636fc4-257Cba5a7f39e3be4ab3b45067fa80faecad-257C0-257C0-257C636616560077181684-26sdata-3DymNFnAFOsfzWoFLXWiQMgaHdUKn9sAC8WMv4-252FNjCP-252B0-253D-26reserved-3D0&d=DwMGaQ&c=djjh8EKwHtOepW4Bjau0lKhLlu-DxM1dlgP0rrLsOzY&r=LPDewt1Z4o9eKc86MXmhqX-45Cz1yz1ylYELF9olLKU&m=rAbpsTqYolOXLuyuZ65ElZ4D1J1uwvjRo1hevsn_2VU&s=pgHJZIGcu4d4THo17qEa4wA69B0ml9_XcTnisqlDy2U&e=>
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