<html><body><p><font size="2">This is a known issue. The workaround is to use </font>--force-nsd-mismatch option. Just <font size="2">make sure that the failure group is different from those used by the vdisk NSDs</font><br><br><font size="2">Regards, The Spectrum Scale (GPFS) team<br><br>------------------------------------------------------------------------------------------------------------------<br>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 <a href="https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479">https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479</a>. <br><br>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. <br><br>The forum is informally monitored as time permits and should not be used for priority messages to the Spectrum Scale (GPFS) team.</font><br><br><img width="16" height="16" src="cid:1__=0ABB0958DFFDEA708f9e8a93df938690918c0AB@" border="0" alt="Inactive hide details for Luke Sudbery ---03/28/2019 01:45:16 PM---We have a 2 site Lenovo DSS-G based filesystem, which with ("><font size="2" color="#424282">Luke Sudbery ---03/28/2019 01:45:16 PM---We have a 2 site Lenovo DSS-G based filesystem, which with (some of the data) replicated across the</font><br><br><font size="2" color="#5F5F5F">From: </font><font size="2">Luke Sudbery <L.R.Sudbery@bham.ac.uk></font><br><font size="2" color="#5F5F5F">To: </font><font size="2">"gpfsug-discuss@spectrumscale.org" <gpfsug-discuss@spectrumscale.org></font><br><font size="2" color="#5F5F5F">Date: </font><font size="2">03/28/2019 01:45 PM</font><br><font size="2" color="#5F5F5F">Subject: </font><font size="2">[gpfsug-discuss] Filesystem descriptor discs for GNR</font><br><font size="2" color="#5F5F5F">Sent by: </font><font size="2">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr width="100%" size="2" align="left" noshade style="color:#8091A5; "><br><br><br><tt><font size="2">We have a 2 site Lenovo DSS-G based filesystem, which with (some of the data) replicated across the 2 sites. We'd like to a 3rd filesystem descriptor disk so we can lose one site and still have filesystem descriptor quorum. But this seems incompatible unless we make new vdisks - which we can't do on non native raid servers.<br><br>We've added a new NSD which now has a free disc, but can't add that disk as descOnly.<br><br>Adding the new descriptor disk to the system pool says:<br> mmadddisk: A storage pool may not contain both vdisk NSDs and non-vdisk NSDs.<br><br>Adding the new disk to a new system_desc pool says:<br> mmadddisk: Disk usage descOnly is incompatible with storage pool system_desc.<br><br>Tried adding config to specify the system_desc pool is for metadataOnly and it still says it's incompatible.<br><br>There is no mention of descOnly disks here: </font></tt><tt><font size="2"><a href="https://www.ibm.com/support/knowledgecenter/en/SSFKCN_4.1.0/com.ibm.cluster.gpfs.v4r1.gpfs200.doc/bl1adv_planning.htm">https://www.ibm.com/support/knowledgecenter/en/SSFKCN_4.1.0/com.ibm.cluster.gpfs.v4r1.gpfs200.doc/bl1adv_planning.htm</a></font></tt><tt><font size="2"><br><br>Is it possible add a non-vdisk descOnly NSD to a dss-g/GNR solution?<br><br>Cheers,<br><br>Luke<br><br>-- <br>Luke Sudbery<br>Architecture, Infrastructure and Systems<br>Advanced Research Computing, IT Services<br>Room 103, Computer Centre G5, Elms Road<br><br>Please note I don't work on Monday and work from home on Friday.<br><br><br>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br></font></tt><tt><font size="2"><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a></font></tt><tt><font size="2"><br><br></font></tt><br><br><BR>
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