[Ocfs2-devel] A question on OCFS2 mount

[Gechangwei]

On 2016/11/21 9:14, Joseph Qi wrote:
> It supports that a device can be mounted multiple times.
>
> Actually it is a general feature of linux filesystems.
>
> Thanks,
>
> Joseph
>

That's solve my problem.
Many thanks!

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