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<pre><span style="font-size:16pt; line-height:1.5; font-family:微软雅黑; background-color:window">In the process of dlm_prepare_lvb_for_migration，</span></pre>
<pre><span style="font-family:微软雅黑; font-size:16pt; line-height:1.5">if </span><span style="font-family:微软雅黑; font-size:16pt; line-height:1.5">all va</span><span style="font-family:微软雅黑; font-size:16pt; line-height:1.5">lid locks have not the </span><span style="font-family:微软雅黑; font-size:16pt; line-height:1.5">same LVB， </span><span style="font-family:微软雅黑; font-size:16pt; line-height:1.5; background-color:window">then BUGs.</span></pre>
<pre><span style="background-color:window; font-family:微软雅黑; font-size:16pt; line-height:1.5">the patch ensures that the other valid locks have the</span></pre>
<pre><pre><font face="微软雅黑">same a LVB </font><i style="font-size:16pt; line-height:1.5; font-family:微软雅黑; background-color:window">from the first valid lock</i><span style="font-size:16pt; background-color:window; font-family:微软雅黑; line-height:normal; white-space:normal"> </span><span style="background-color:window; font-family:微软雅黑; font-size:16pt; line-height:normal; white-space:normal">to solute the problem of BUGs</span></pre><pre><span style="background-color:window; font-family:微软雅黑; font-size:16pt; line-height:normal; white-space:normal"><br></span></pre><pre><font face="微软雅黑"><span style="background-color:rgb(255,255,255)">Finally, any feedback about this process (positive or negative) would be
greatly appreciated.
Thanks,
--zgh</span></font></pre><pre><font face="微软雅黑"><span style="background-color:rgb(255,255,255)"><br></span></font></pre></pre>
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<pre><i style="font-size:16pt; line-height:1.5; font-family:微软雅黑; background-color:window">static void dlm_prepare_lvb_for_migration(struct dlm_lock *lock, </i><span style="font-size:16pt; line-height:1.5; font-family:微软雅黑; font-style:italic">struct dlm_migratable_lockres *mres,</span><span style="font-size:16pt; line-height:1.5; font-family:微软雅黑; font-style:italic">int queue)</span><span style="font-size:16pt; line-height:1.5; font-style:italic; font-family:微软雅黑"> </span></pre>
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<div><code><font face="微软雅黑"><i>--- dlmrecovery.c 2014-12-17 01:39:45.000000000 +0800 <br>
+++ dlmrecovery0.c 2015-05-16 10:59:59.683924862 +0800 <br>
@@ -1215,7 +1215,10 @@ <br>
lock->lockres->lockname.len, lock->lockres->lockname.name, <br>
lock->ml.node); <br>
dlm_print_one_lock_resource(lock->lockres); <br>
- BUG(); <br>
+ <br>
+ /* Ensure the lvb copied for migration matches the first valid locks */ <br>
+ memcpy(lock->lksb->lvb, mres->lvb, DLM_LVB_LEN); <br>
+ return; <br>
}</i></font></code></div>
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<pre><font face="微软雅黑"><i>On Mon, Jan 25, 2010 at 04:57:39PM -0800, Sunil Mushran wrote:
> During lock resource migration, o2dlm fills the packet with a LVB from the
> first valid lock. For sanity, it ensures that the other valid locks have the
> same LVB. If not, it BUGs.
>
> The valid locks are ones that have granted EX or PR lock levels and are either
> on the Granted or Converting lists. Locks in the Blocked list cannot have a
> valid LVB.</i></font></pre>
<pre><i style="font-size:16pt; line-height:1.5; font-family:微软雅黑; background-color:window"><br></i></pre>
<pre><br></pre>
<pre><br></pre>
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