[linux-cifs-client] Multiple mounts on same mount points

[Suresh Jayaraman]

On 05/31/2010 09:25 PM, Steve French wrote:
> The existing MultiUserMount feature of cifs (this existing multiuser
> support is more limited than what Jeff has proposed for the future)
> required multiple mounts in order to pass unique credentials down for
> each new uid.

Ok, thanks for the clarifying.


> Which local file systems allow multiple mounts to the same device on
> same mount point?

I'm not aware of any such disk-based filesystem.

> I think for the future it would be reasonable to forbid it (e.g. for
> smb2 experimental code) assuming we have Jeff's multiuser support (or
> something similar) implemented.

Sounds good.

Thanks,
> 
> On Mon, May 31, 2010 at 7:56 AM, Suresh Jayaraman <sjayaraman at suse.de> wrote:
>> Wondering what could be the reason behind CIFS allowing multiple mounts
>> on same mount points while other Network File systems (say NFS) does
>> not.. For e.g.
>>
>> � mount -t cifs //server/share /mnt/cifs
>> � mount -t cifs //server/share /mnt/cifs (also succeeds)
>>
>> where one would expect an -EBUSY error during the second attempt.
>>
>> Though I do not see any major issues, this behavior could be confusing
>> for users when they discover the mount is still present after umount
>> (because they mounted it twice unknowingly) or when they see multiple
>> mounts on same mount points.
>>
>>
>> Thanks,
>>
>> --
>> Suresh Jayaraman
>>
> 
> 
> 


-- 
Suresh Jayaraman