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	<updated>2026-07-25T06:40:48Z</updated>
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	<entry>
		<id>https://wiki.tetrain.com/index.php?title=ALPHA_Cluster_Troubleshooting&amp;diff=1616</id>
		<title>ALPHA Cluster Troubleshooting</title>
		<link rel="alternate" type="text/html" href="https://wiki.tetrain.com/index.php?title=ALPHA_Cluster_Troubleshooting&amp;diff=1616"/>
		<updated>2014-05-03T09:46:42Z</updated>

		<summary type="html">&lt;p&gt;Amitchaurasia: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt; cs:Connected st:&#039;&#039;&#039;&#039;&#039;&#039;Primary/Unknown&#039;&#039;&#039; ds:UpToDate/DUnknown&#039;&#039;&#039; r---&lt;br /&gt;
 ns:0 nr:0 dw:1036 dr:3111 al:0 bm:98 lo:0 pe:0 ua:0 ap:0 &lt;br /&gt;
&lt;br /&gt;
(a) If the cluster (/OPT) is mounted on &#039;&#039;&#039;Primary&#039;&#039;&#039; node and showing above error,then run the following commands.&lt;br /&gt;
&lt;br /&gt;
(1) drbdadm -- --discard-my-data connect all           (on &#039;&#039;&#039;Node2&#039;&#039;&#039; with &amp;quot;bad&amp;quot; data)&lt;br /&gt;
&lt;br /&gt;
(2) drbdadm connect all                                (on &#039;&#039;&#039;Node1&#039;&#039;&#039; with &amp;quot;good&amp;quot; data)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
After running those commands check &#039;&#039;&#039;Node1&#039;&#039;&#039; .&lt;br /&gt;
&lt;br /&gt;
(3) service drbd status  (It will show that data is syncing to &#039;&#039;&#039;node2&#039;&#039;&#039; disk)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
 cs:WFConnection st:&#039;&#039;&#039;&#039;&#039;&#039;Secondary/Unknown&#039;&#039;&#039;&#039;&#039;&#039; ds:&#039;&#039;&#039;UpToDate/DUnknown&#039;&#039;&#039; C r---&lt;br /&gt;
 ns:0 nr:0 dw:0 dr:0 al:0 bm:17 lo:0 pe:0 ua:0 ap:0 &lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
(a) If the cluster (/OPT) is mounted on &#039;&#039;&#039;Secondary&#039;&#039;&#039; node and showing above error,then run the following commands.&lt;br /&gt;
&lt;br /&gt;
(1) drbdadm -- --discard-my-data connect all           (on &#039;&#039;&#039;Node1&#039;&#039;&#039; with &amp;quot;bad&amp;quot; data)&lt;br /&gt;
&lt;br /&gt;
(2) drbdadm connect all                                (on &#039;&#039;&#039;Node2&#039;&#039;&#039; with &amp;quot;good&amp;quot; data)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
After running this command check &#039;&#039;&#039;Node2&#039;&#039;&#039; .&lt;br /&gt;
&lt;br /&gt;
(3) service drbd status  (It will show that data is syncing to &#039;&#039;&#039;node1&#039;&#039;&#039; disk)&lt;/div&gt;</summary>
		<author><name>Amitchaurasia</name></author>
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