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Message-Id: <E1IFnSa-0002BL-00@dorka.pomaz.szeredi.hu>
Date:	Tue, 31 Jul 2007 10:52:08 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	chuck.lever@...cle.com
CC:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	kzak@...hat.com, sfrench@...ba.org, trond.myklebust@....uio.no,
	mark.fasheh@...cle.com, kurt.hackel@...cle.com
Subject: Re: request for patches: showing mount options

> After a successful mount, the NFS mount command tucks some options into 
> /etc/mtab that reflect which mountd was used for the mount, and what 
> protocol version and port was used for the mount request.  Those options 
> are not passed to the kernel, and do not appear in /proc/mounts today. 
> See nfs(5)'s discussion of the mountport, mounthost, mountprog, and 
> mountvers options.
> 
> However, the trend for NFS is to push mount option parsing into the 
> kernel.  Thus all options will be passed to the kernel, and at that 
> point it should be able to reflect the mount* options in /proc/mounts. 
> But it doesn't do that quite yet.

Trond, do you have a roadmap for this?

> I'm wondering if there are other such cases in other file systems.

Anything that has /sbin/mount.XXX could be doing this.  According to
Karel, those are nfs, cifs and ocfs2.

Miklos
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