kern/180236: [zfs] [nullfs] Leakage free space using ZFS with nullfs on 9.1-STABLE

[Konstantin Belousov]

On Thu, Jul 04, 2013 at 12:00:01AM +0000, Steven Hartland wrote:
> The following reply was made to PR kern/180236; it has been noted by GNATS.
> 
> From: "Steven Hartland" <smh at freebsd.org>
> To: <bug-followup at freebsd.org>,
> 	"Ivan Klymenko" <fidaj at ukr.net>
> Cc:  
> Subject: Re: kern/180236: [zfs] [nullfs] Leakage free space using ZFS with nullfs on 9.1-STABLE
> Date: Thu, 4 Jul 2013 00:58:13 +0100
> 
>  Looks like nullfs isn't cleaning up correctly in the case
>  where a rename colides with an existing file hence results
>  in an implicit remove.
>  
>  This can be seen in the zdb output for the volume in that
>  before the unmount all the plain file entries still exist
>  but after the unmount of nullfs they are gone.

Can you demonstrate the scenario of the problem, e.g. using the basic
filesystem commands, like cp(1), mv(1) ?  Does the issue reproduce
on UFS ?
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