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<p>It supports that a device can be mounted multiple times.</p>
<p>Actually it is a general feature of linux filesystems.<br>
</p>
<p>Thanks,</p>
<p>Joseph<br>
</p>
<br>
<div class="moz-cite-prefix">On 16/11/19 16:32, Gechangwei wrote:<br>
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<div class="moz-cite-prefix">On 2016年08月31日 18:59, Gechangwei
wrote:<br>
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<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am asking for your
help on OCFS2 again.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I can’t figure out a
segment of code.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In the function
dlm_register_domain which is called during mount
procedure, below code stays:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> dlm =
__dlm_lookup_domain(domain);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if (dlm) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if
(dlm->dlm_state != DLM_CTXT_JOINED) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
spin_unlock(&dlm_domain_lock);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
mlog(ML_ERROR, "fence: dlm(%s) is not joined yet.\n",
dlm->name);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
mlog(0, "This ctxt is not joined yet!\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
wait_event_interruptible(dlm_domain_events,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
dlm_wait_on_domain_helper(<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
domain));<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">
goto retry;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I can see that it
wants to look up an existed DLM context object which
matches file system’s UUID.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">According to my
comprehension, DLM context object must be detached from
the DLM domain’s list and released when dismount.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">So it’s weird that
such a DLM context object can be found at the procedure of
MOUNT.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Could you please
provide a clue for me, if convenient?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> how are u<br>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Many thanks!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">BR.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Changwei.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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