Re: Bug? Kernel doesn't prevent multiple rw nilfs mounts

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Hi Michael,

On Oct 24, 2013, at 9:21 PM, Michael Conrad wrote:

> Hi,  When I mount a NILFS partition twice (not on purpose), it correctly prints:
> 
>  mount.nilfs2: the device already has a rw-mount on /mnt/_bak.
>                multiple rw-mount is not allowed.
> 
> But the mount happens anyway?!
> 
>  /dev/sdb4 on /mnt/_bak type nilfs2 (rw,relatime)
>  /dev/sdb4 on /mnt/sdb4 type nilfs2 (rw,relatime)
> 
> I saw this in Linux 3.2.16, then upgraded to 3.10.7 and it still happens.  Writing to these mounts in parallel causes buggy behavior, though it didn't corrupt my partition (yet).
> 
> Has no-one tested this lately?
> 

I can't reproduce such behavior. Could you describe your environment and
reproducing path in more details?

Thanks,
Vyacheslav Dubeyko.

> -Mike
> 
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