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I am studying OCFS2 kernel source code and I found this comment of function dlm_lanuch_thread in file fs/ocfs2/dlm/dlmthread.c:

/* Launch the NM thread for the mounted volume */

So what does the "NM thread" mean?

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up vote 2 down vote accepted

From the user's guide, section 4, "O2CB Cluster Service":

  • NM: Node Manager that keep[sic] track of all the nodes in the cluster.conf
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