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<p class="MsoPlainText"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">According to current DLM recovery implementation after another node</span><span lang="EN-US" style="font-family:"Courier New"">’</span><span lang="EN-US">s death in cluster, all resources belonging to that dead node
will be recovered by the recovery master. <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">MLE related mastery procedure is not exclusive against DLM recovery. That means when allocating a new lock resource whose owner is unknown before mastery procedure accomplishment, it will not be attached the list on
which will be recovered subsequently.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">However since its mastery is not done yet, it will be notified that some nodes in vote map pass away. So finally, it will select a proper lock resource master.
<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">BR.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">Chauncey Ge.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt">发件人<span lang="EN-US">:</span></span></b><span lang="EN-US" style="font-size:10.0pt"> ocfs2-devel-bounces@oss.oracle.com [mailto:ocfs2-devel-bounces@oss.oracle.com]
</span><b><span style="font-size:10.0pt">代表 </span></b><span lang="EN-US" style="font-size:10.0pt">Zhangguanghui<br>
</span><b><span style="font-size:10.0pt">发送时间<span lang="EN-US">:</span></span></b><span lang="EN-US" style="font-size:10.0pt"> 2016</span><span style="font-size:10.0pt">年<span lang="EN-US">7</span>月<span lang="EN-US">22</span>日<span lang="EN-US"> 10:12<br>
</span><b>收件人<span lang="EN-US">:</span></b><span lang="EN-US"> ocfs2-devel@oss.oracle.com<br>
</span><b>主题<span lang="EN-US">:</span></b><span lang="EN-US"> [Ocfs2-devel] review patch: return in progress if master can not clear the refmap bit right now<o:p></o:p></span></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"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black">hi</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black">We found a BUG situation described below. To fix the bug, I think</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black">dlm_drop_lockres_ref should be 0 in the case of dlm_is_host_down(</span><span lang="EN-US" style="font-size:13.5pt;font-family:"微软雅黑","sans-serif";color:black;background:white">master
goes down).</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black">or <span style="background:white">list_del_init(&res->purge) should be behind the !master && ret != 0 return,</span></span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black;background:white">the res will release int the recovery process while umounting the vol.</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black;background:white">Thanks</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black">detail:<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> Node 1 Node 2(master)<br>
</span><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> </span><span lang="EN-US" style="font-family:"微软雅黑, Tahoma","serif";color:black">
</span><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> </span><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black">dlm_purge_lockres <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> dlm_drop_lockres_ref master goes down</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> </span><span lang="EN-US" style="font-family:"微软雅黑, Tahoma","serif";color:black">
</span><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> </span><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> list_del_init(&res->purge)<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> !master && ret != 0 return</span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> get a failure while umounting.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:16.0pt"><span lang="EN-US" style="font-family:"微软雅黑","sans-serif";color:black"> </span><span lang="EN-US" style="font-size:16.0pt;font-family:"微软雅黑","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.5pt;font-family:"Arial","sans-serif";color:#333333">ocfs2/dlm: return in progress if master can not clear the refmap bit right now<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:#333333"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:#333333">Master returns in-progress to non-master node when it can not clear the refmap bit right now. And non-master node will not purge the lock resource until
receiving deref done message.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:#333333"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:#333333"><br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><i><span lang="EN-US" style="font-family:"Verdana","sans-serif";color:#993300">zhangguanghui</span></i><span lang="EN-US" style="font-family:"Verdana","sans-serif";color:black"><o:p></o:p></span></p>
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