[gpfsug-discuss] FYI, Spectrum Scale 5.0.1 is out -NSD Checksum

[Oesterlin, Robert]

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: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of "Buterbaugh, Kevin L" <Kevin.Buterbaugh at Vanderbilt.Edu>
Reply-To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: Friday, May 11, 2018 at 1:29 PM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
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 <Paul.Sanchez at deshaw.com<mailto:Paul.Sanchez at deshaw.com>> 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: gpfsug-discuss-bounces at spectrumscale.org<mailto:gpfsug-discuss-bounces at spectrumscale.org> <gpfsug-discuss-bounces at spectrumscale.org<mailto:gpfsug-discuss-bounces at spectrumscale.org>> On Behalf Of Bryan Banister
Sent: Friday, May 11, 2018 12:25 PM
To: gpfsug main discussion list (gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>) <gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>>
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

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