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Date:      Thu, 7 Nov 2019 03:36:22 +0100
From:      Jan Behrens <jbe-mlist@magnetkern.de>
To:        freebsd-fs@freebsd.org
Subject:   Re: ZFS snapdir readability (Crosspost)
Message-ID:  <20191107033622.16414272ae743d50f75786ec@magnetkern.de>
In-Reply-To: <0a823048-d191-72e8-e20b-0491ebd4ea4a@peak.org>
References:  <20191107004635.c6d2e7d464d3d556a0d87465@magnetkern.de> <CAOtMX2huHZcXHH%2B=3Bx7hX_p9udJ2acOX%2BZL8vW=pjqbe6mOAA@mail.gmail.com> <20191107012027.9639f3a9dda1941518358a52@magnetkern.de> <0a823048-d191-72e8-e20b-0491ebd4ea4a@peak.org>

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On Wed, 6 Nov 2019 16:36:08 -0800
Alan Batie <alan@peak.org> wrote:

> On 11/6/19 4:20 PM, Jan Behrens wrote:
> 
> > My problem here is that with most (or maybe even all) other backup
> > systems, I would be able to restrict ordinary users from accessing all
> > backups. So I consider this problem to be pretty much unique to ZFS
> 
> This is going to be a problem with any system that does snapshots - our
> Netapps would also have the same issue, and it's unfortunate, but one
> you want as you want users to be able to recover their files on their
> own, it's part of the point...

I understand the point now.

Not all application fields of snapshots, however, (whether backup or
replication or other) have the purpose of letting non-privileged users
access the data. With the current implementation of ZFS I have no
choice on whether I want this behavior or consider it a security
problem that should be avoided in my scenario. This also applies to
snapshots taken for other reasons than (user readable) backups.

Regards,
Jan



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