Re: user snapshots

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On Wed 2017-08-23 (10:16), Dmitrii Tcvetkov wrote:
> > >Also in https://btrfs.wiki.kernel.org/index.php/Mount_options
> > >"user_subvol_rm_allowed (...) Use with caution."
> > >
> > >Why? What is the problem?  
> > 
> > Because with the mount option any user can delete any subvolume,
> > including root one (subvol_id=5)
> 
> Apologies, it works somewhat different:
> filesystem doesn't allow to delete subvolume with id 5 and POSIX access
> is checked before deleting subvolume with user_subvol_rm_allowed mount
> option.

I have tested it already :-)

So, still: What is the problem with user_subvol_rm_allowed?

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Ullrich Horlacher              Server und Virtualisierung
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Universitaet Stuttgart         E-Mail: horlacher@xxxxxxxxxxxxxxxxxxxx
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REF:<20170823101635.114d02d2@job>
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