[Ocfs2-devel] For reviews, thanks

[Guozhonghua]

As dlm lock LVB different, the dlm lock migration may be failed without the dlm lock.
So the new owner will not have the dlm lock with the node, such as cookie 10:2696 as below.

diff -cp dlmrecovery_org.c dlmrecovery.c
*** dlmrecovery_org.c  2015-05-25 09:53:05.530826236 +0800
--- dlmrecovery.c    2015-05-25 10:01:12.242839116 +0800
*************** static void dlm_prepare_lvb_for_migratio
*** 1194,1199 ****
--- 1194,1203 ----
      if (!lock->lksb)
             return;

+     if (dlm_lvb_is_empty(lock->lksb->lvb)) {
+             return;
+     }
+
      /* Ignore lvb in all locks in the blocked list */
      if (queue == DLM_BLOCKED_LIST)
              return;

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