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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">It is not mmvdisk issue. Mmvdisk hangs because ‘tslsrecgroup’ command hangs which executed by mmvdisk.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">I recreated it on my environment (coexist 5.1.3 or 5.1.4, 5.1.5 with 5.1.2 or previous version)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">After further investigation, it should be a known issue which is fixed in 5.1.6 PTF1.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt">To resolve this issue, we need to upgrade the version to 5.1.6.1 at least.
<o:p></o:p></span></p>
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</span><span lang="EN-US" style="font-family:宋体;color:black">代表</span><span lang="EN-US" style="color:black"> Luke Sudbery <l.r.sudbery@bham.ac.uk><br>
</span><b><span lang="EN-US" style="font-family:宋体;color:black">日期</span><span lang="EN-US" style="color:black">:</span></b><span lang="EN-US" style="color:black">
</span><span lang="EN-US" style="font-family:宋体;color:black">星期六</span><span lang="EN-US" style="color:black">, 2023</span><span lang="EN-US" style="font-family:宋体;color:black">年</span><span lang="EN-US" style="color:black">3</span><span lang="EN-US" style="font-family:宋体;color:black">月</span><span lang="EN-US" style="color:black">18</span><span lang="EN-US" style="font-family:宋体;color:black">日</span><span lang="EN-US" style="color:black">
00:06<br>
</span><b><span lang="EN-US" style="font-family:宋体;color:black">收件人</span><span lang="EN-US" style="color:black">:</span></b><span lang="EN-US" style="color:black"> gpfsug main discussion list <gpfsug-discuss@gpfsug.org><br>
</span><b><span lang="EN-US" style="font-family:宋体;color:black">主题</span><span lang="EN-US" style="color:black">:</span></b><span lang="EN-US" style="color:black"> [EXTERNAL] Re: [gpfsug-discuss] mmvdisk version/communication issues?</span><span lang="EN-US" style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span lang="EN-US" style="font-size:1.0pt;color:white">On further investigation the command does eventually complete, after 11 minutes rather than a couple of seconds. [root@ rds-pg-dssg01 ~]# time mmvdisk
pdisk list --rg rds_er_dssg02 --not-ok mmvdisk: All pdisks of recovery group 'rds_er_dssg02'
</span><span lang="EN-US" style="font-size:1.0pt;font-family:宋体;color:white"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">On further investigation the command does eventually complete, after 11 minutes rather than a couple of seconds.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB">[root@rds-pg-dssg01 ~]# time mmvdisk pdisk list --rg rds_er_dssg02 --not-ok</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB">mmvdisk: All pdisks of recovery group 'rds_er_dssg02' are ok.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB">real 11m14.106s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB">user 0m1.430s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB">sys 0m0.555s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black;mso-fareast-language:EN-GB">[root@rds-pg-dssg01 ~]#</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Looking at the process tree, the bits that hang are:<o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]# time tslsrecgroup rds_er_dssg02 -Y --v2 --failure-domain</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">Failed to connect to file system daemon: Connection timed out</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">real 5m30.181s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">user 0m0.001s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">sys 0m0.003s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">and then<o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]# time tslspdisk --recovery-group rds_er_dssg02 --notOK</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">Failed to connect to file system daemon: Connection timed out</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">real 5m30.247s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">user 0m0.003s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">sys 0m0.002s</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]#</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Which adds up to the 11 minutes.... then it does something else and just works. Or maybe it <i>doesn't work</i> and just wouldn't report any failed disks is there were any….<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">While hanging, the ts commands appear to be LISTENing, not attempting to make connections:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]# pidof tslspdisk</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">2156809</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]# netstat -apt | grep 2156809</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">tcp 0 0 0.0.0.0:60000 0.0.0.0:* LISTEN 2156809/tslspdisk</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]#</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Port 60000 is the lowest of our </span><span class="CodeChar"><span lang="EN-US" style="color:black">tscCmdPortRange</span></span><span lang="EN-US">.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Don’t know if that helps anyone….<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Luke<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">--
</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Luke Sudbery</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Principal Engineer (HPC and Storage).</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Architecture, Infrastructure and Systems</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Advanced Research Computing, IT Services</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Room 132, Computer Centre G5, Elms Road</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Please note I don’t work on Monday.</span></b><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="mso-fareast-language:EN-GB"> gpfsug-discuss <gpfsug-discuss-bounces@gpfsug.org>
<b>On Behalf Of </b>Luke Sudbery<br>
<b>Sent:</b> 17 March 2023 15:11<br>
<b>To:</b> gpfsug-discuss@gpfsug.org<br>
<b>Subject:</b> [gpfsug-discuss] mmvdisk version/communication issues?</span><span lang="EN-US"><o:p></o:p></span></p>
</div>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We 3 Lenovo DSSG “Building Blocks” as they call them – 2x GNR server pairs.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We’ve just upgraded the 1st of them from 3.2a (GPFS 5.1.1.0) to 4.3a (5.1.5.1 efix 20).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Now the older systems can’t communicated with the newer in certain circumstances, specifically querying recovery groups hosted on other servers.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It works old->old, new->old and new->new but not old->new.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">If fairly sure it is not a TCP comms problem. I can ssh between the node as root and as the GPFS
</span><span class="CodeChar"><span lang="EN-US" style="color:black">sudoUser</span></span><span lang="EN-US">. Port 1191 and the
</span><span class="CodeChar"><span lang="EN-US" style="color:black">tscCmdPortRange</span></span><span lang="EN-US"> are open and accessible in both direction between the nodes. There are connections present between the nodes in netstat and in
</span><span class="CodeChar"><span lang="EN-US" style="color:black">mmfsd.latest.log</span></span><span lang="EN-US">. No pending message (to that node) in
</span><span class="CodeChar"><span lang="EN-US" style="color:black">mmdiag --network.</span></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In these examples </span><span class="CodeChar"><span lang="EN-US" style="color:black">rds-er-dssg01/2</span></span><span lang="EN-US"> are upgraded,
</span><span class="CodeChar"><span lang="EN-US" style="color:black">rds-pg-dssg01/2</span></span><span lang="EN-US"> are downlevel:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-er-dssg01 ~]# mmvdisk pdisk list --rg rds_er_dssg02 --not-ok # New to new</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">mmvdisk: All pdisks of recovery group 'rds_er_dssg02' are ok.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-er-dssg01 ~]# mmvdisk pdisk list --rg rds_pg_dssg02 --not-ok # New to old</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">mmvdisk: All pdisks of recovery group 'rds_pg_dssg02' are ok.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-er-dssg01 ~]#</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]# mmvdisk pdisk list --rg rds_pg_dssg02 --not-ok # Old to old</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">mmvdisk: All pdisks of recovery group 'rds_pg_dssg02' are ok.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]# mmvdisk pdisk list --rg rds_er_dssg02 --not-ok # Old to new [HANGS]</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">^Cmmvdisk: Command failed. Examine previous error messages to determine cause.</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="Code"><span lang="EN-US" style="color:black">[root@rds-pg-dssg01 ~]#</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Has anyone come across this? mmvdisk should work across slightly different versions of 5.1, right? No recovery group, cluster or filesystem versions have been changed yet.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We will also log a ticket with snaps and more info but wondered if anyone had seen this.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And while this particular command is not a major issue, we don’t know what else it may affect, before we proceed with the reset of the cluster.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Many thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Luke<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">--
</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Luke Sudbery</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Principal Engineer (HPC and Storage).</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Architecture, Infrastructure and Systems</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Advanced Research Computing, IT Services</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Room 132, Computer Centre G5, Elms Road</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-GB">Please note I don’t work on Monday.</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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