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List:       ocfs2-devel
Subject:    Re: [Ocfs2-devel] A question on OCFS2 mount
From:       Gechangwei <ge.changwei () h3c ! com>
Date:       2016-11-21 5:55:50
Message-ID: 63ADC13FD55D6546B7DECE290D39E37342E5C04E () H3CMLB12-EX ! srv ! huawei-3com ! com
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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 2016Äê08Ô 31ÈÕ 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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