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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">I'm having problems getting drbd9 to start on RHEL 7.6.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Previously was using drbd8 on RHEL6.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">In that scenario, we had a bash script which had the following (at a high level):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">(1) install the drbd packages<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">(2) update drbd config file(s) with resource data
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> (3) create the meta data via 'drbdadm create-md <resource'><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">(4) bring up the resource 'drbdadm up <resource>'<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">(5) determine which side was primary and set it: 'drbdadm primary --force <resource>'<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">(6) likewise, for the secondary: 'drbdadm secondary drbdadm secondary<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">The first node would be brought up and this scrip was executed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">The drbd-overview output would show that the remote resource was unavailable, as expected.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Eventually, the 2<sup>nd</sup> node is brought up, the above script executed, and the drbd resources would begin syncing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Moving to drbd9 on RHEL7.6:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">I tweaked the script a bit, but basically it's the same.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">However, after it runs, the drbdadm status shows the resource as StandAlone:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">[root@node1 ~]# drbdadm status<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">r0 role:Secondary<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> disk:UpToDate<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> node1.mycompany.com connection:StandAlone<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">[root@node1 ~]#<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Later, I bring up the other node and same thing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">I then tried adding the following commands between steps (3) and (4):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">systemctl start drbd<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">systemctl enable drbd<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Problem now, is that the script hangs at the 'systemctl start drbd'.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Digging further, I find it's because it's waiting to connect to the remote resource.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">[root@chris-nsp1 log]# systemctl status drbd<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">● drbd.service - DRBD -- please disable. Unless you are NOT using a cluster manager.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> Loaded: loaded (/usr/lib/systemd/system/drbd.service; disabled; vendor preset: disabled)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> Active: activating (start) since Wed 2019-03-27 18:16:34 EST; 1min 47s ago<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">Main PID: 20321 (drbd)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> Tasks: 3<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> CGroup: /system.slice/drbd.service<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> ├─20321 /bin/bash /lib/drbd/drbd start<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> ├─20352 drbdadm wait-con-int<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> └─20353 drbdsetup
<span style="background:yellow;mso-highlight:yellow">wait-connect-resource r0</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Ideally, I’d like to bring one node up (including the starting of drbd), perform some sanity operations, then, bring up the other node.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Is there a way to start/enable drbd without having to wait for the remote resource?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">David<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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