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Hi list,<br>
<br>
I had to relocate my third node in a classic DRBD 8.4 three node set up
to a new host. I am having difficulty making the stacked resource the
primary. I am following this guide:
<a class="moz-txt-link-freetext" href="https://www.linbit.com/drbd-user-guide/users-guide-drbd-8-4/#s-three-nodes">https://www.linbit.com/drbd-user-guide/users-guide-drbd-8-4/#s-three-nodes</a><br>
<br>
Specifically this:<br>
<blockquote type="cite">
<h4 id="s-three-node-enable">5.18.3. Enabling stacked resources</h4>
<div class="paragraph"><p>To enable a stacked resource, you first
enable its lower-level
resource and promote it:</p></div>
<div class="listingblock"><div class="content"><pre>drbdadm up r0
drbdadm primary r0</pre></div></div>
<div class="paragraph"><p>As with unstacked resources, you must
create DRBD meta data on the
stacked resources. This is done using the following command:</p></div>
<div class="listingblock"><div class="content"><pre># drbdadm create-md --stacked r0-U</pre></div></div>
<div class="paragraph"><p>Then, you may enable the stacked resource:</p></div>
<div class="listingblock"><div class="content"><pre># drbdadm up --stacked r0-U
# drbdadm primary --stacked r0-U</pre></div></div>
<div class="paragraph"><p>After this, you may bring up the resource
on the backup node, enabling
three-node replication:</p></div>
<div class="listingblock"><div class="content"><pre># drbdadm create-md r0-U
# drbdadm up r0-U</pre></div></div>
</blockquote>
It seems all is good right up to the last command:<br>
<br>
:~# drbdadm primary informer<br>
:~# drbdadm create-md --stacked informer-U<br>
You want me to create a v08 style flexible-size internal meta data
block.<br>
There appears to be a v08 flexible-size internal meta data block<br>
already in place on /dev/drbd11 at byte offset 429483581440<br>
<br>
Do you really want to overwrite the existing meta-data?<br>
[need to type 'yes' to confirm] yes<br>
<br>
md_offset 429483581440<br>
al_offset 429483548672<br>
bm_offset 429470441472<br>
<br>
Found some data<br>
<br>
==> This might destroy existing data! <==<br>
<br>
Do you want to proceed?<br>
[need to type 'yes' to confirm] yes<br>
<br>
initializing activity log<br>
NOT initializing bitmap<br>
Writing meta data...<br>
New drbd meta data block successfully created.<br>
:~# drbdadm up --stacked informer-U<br>
:~# drbdadm primary --stacked informer-U<br>
110: State change failed: (-2) Need access to UpToDate data<br>
Command 'drbdsetup-84 primary 110' terminated with exit code 17<br>
<br>
drbd11 is the device for the lower level resource 'informer', drbd110
the device for stacked resource 'informer-U'. Replication between hosts
'Alice' and 'Bob' (not the real host names but corresponding to the
names used int the documentation) is functional. I am performing the
above commands on 'bob'.<br>
<br>
I do not understand why it is complaining it needs UpToDate data in that
last command if 'informer-U' is 'stacked-on-top-of informer' and was
just created.<br>
<br>
the .res file(s) look like this:<br>
<br>
<blockquote type="cite">resource informer {<br>
net {<br>
protocol C;<br>
}<br>
<br>
device /dev/drbd11;<br>
meta-disk internal;<br>
<br>
on trk-kvm-01 {<br>
address 10.10.1.125:7789;<br>
disk /dev/trk-kvm-01-vg/informer;<br>
}<br>
on trk-kvm-02 {<br>
address 10.10.1.126:7789;<br>
disk /dev/trk-kvm-02-vg/informer;<br>
}<br>
}<br>
<br>
resource informer-U {<br>
net {<br>
protocol A;<br>
}<br>
<br>
stacked-on-top-of informer {<br>
device /dev/drbd110;<br>
address 10.10.2.126:7789;<br>
}<br>
<br>
on trk-bkp-01 {<br>
device /dev/drbd110;<br>
disk /dev/ubuntu-vg/informer;<br>
address 10.10.2.127:7789;<br>
meta-disk internal;<br>
}<br>
}</blockquote>
Any suggestions on what I am missing in this picture?<br>
<br>
Please and thanks.<br>
<div class="moz-signature">-- <br><span style="font-weight: bold;">Paul
O'Rorke</span><br>
<span style="font-weight: bold;">Tracker Software Products (Canada)
Limited</span><br>
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