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List:       drbd-user
Subject:    Re: [DRBD-user] Understanding "classic" 3 node set up.
From:       Igor Cicimov <icicimov () gmail ! com>
Date:       2018-02-10 0:01:41
Message-ID: CAAKASGxERtmV7Da=ea7M+uqw-60dokAKpoFiGC3FPTmUJjt_nQ () mail ! gmail ! com
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On 9 Feb 2018 7:30 pm, "Paul O'Rorke" <paul@tracker-software.com> wrote:

In a functional classic 3 node set up what is the expected state of the
secondary node that is the lower resource with regards the upper resource?

trk-kvm-01 (primary for both resource levels)

root@trk-kvm-01:~/scripts# drbd-overview
[...]
 12:convirt/0                Connected Primary/Secondary
UpToDate/UpToDate _convirt           vda virtio
[...]
120:convirt-U/0         ^^12 Connected Primary/Secondary
UpToDate/UpToDate

trk-kvm-02 (secondary lower resource)

root@trk-kvm-02:~/scripts# drbd-overview
[...]
 12:convirt/0                Connected    Secondary/Primary
UpToDate/UpToDate _convirt           vda virtio
[...]
120:convirt-U/0         ^^12 Unconfigured .
.

trk-kvm-03 (secondary on upper resource)

root@trk-kvm-03:/media/scratch# drbd-overview
[...]
120:convirt-U/0  Connected Secondary/Primary UpToDate/UpToDate

I see nowhere to set this node's IP yet the docs say this resource file
"must be distributed across all nodes in the cluster — in this case, three
nodes."  What is the point of the convirt-U res file on trk-kvm-02?

Well I guess if you loose the first node someone needs to take over its
role, right? Never used stacked resources so it is just a guess.

[Attachment #5 (text/html)]

<div dir="auto"><br><div class="gmail_extra" dir="auto"><br><div \
class="gmail_quote">On 9 Feb 2018 7:30 pm, &quot;Paul O&#39;Rorke&quot; &lt;<a \
href="mailto:paul@tracker-software.com">paul@tracker-software.com</a>&gt; wrote:<br \
type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px \
#ccc solid;padding-left:1ex">  
    
  
  <div text="#000000" bgcolor="#FFFFFF">
    <p>In a functional classic 3 node set up what is the expected state
      of the secondary node that is the lower resource with regards the
      upper resource?   <br>
    </p>
    <p>trk-kvm-01 (primary for both resource levels)</p>
    <blockquote>
      <p><tt>root@trk-kvm-01:~/scripts# drbd-overview </tt><tt><br>
        </tt></p><div class="quoted-text"><tt>[...] </tt><tt><br>
        </tt><tt>  12:convirt/0                               Connected
          Primary/Secondary     UpToDate/UpToDate _convirt                     vda
          virtio </tt><tt><br>
        </tt><tt>[...]</tt><tt><br>
        </tt></div><tt>120:convirt-U/0                 ^^12 Connected
          Primary/Secondary     UpToDate/UpToDate </tt><br>
      <p></p>
    </blockquote>
    <p>trk-kvm-02 (secondary lower resource)<br>
    </p>
    <blockquote>
      <p><tt>root@trk-kvm-02:~/scripts# drbd-overview <br>
          [...]<br>
            12:convirt/0                               Connected       \
Secondary/Primary      UpToDate/UpToDate _convirt                     vda virtio <br>
          [...]<br>
          120:convirt-U/0                 ^^12 Unconfigured .                         \
                
          .                                 </tt></p>
    </blockquote>
    <p>trk-kvm-03 (secondary on upper resource)<br>
    </p>
    <blockquote>
      <p><tt>root@trk-kvm-03:/media/<wbr>scratch# drbd-overview</tt><tt><br>
          [...]<br>
        </tt><tt>120:convirt-U/0   Connected Secondary/Primary
          UpToDate/UpToDate </tt><br>
      </p>
    </blockquote>
    <p>I see nowhere to set this node&#39;s IP yet the docs say this
      resource file &quot;must be distributed across all nodes in the
      cluster — in this case, three<br>
      nodes.&quot;   What is the point of the convirt-U res file on
      trk-kvm-02?</p></div></blockquote></div></div><div dir="auto">Well I guess if \
you loose the first node someone needs to take over its role, right? Never used \
stacked resources so it is just a guess.</div><div class="gmail_extra" \
dir="auto"></div></div>



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