Date: Thu, 08 Aug 2013 14:06:40 +0100 From: Matthew Seaman <matthew@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: ZFS in jails 9.2-RC1 permission denied Message-ID: <520397E0.1090209@freebsd.org> In-Reply-To: <1375963526.32115.7488635.39B9BAB2@webmail.messagingengine.com> References: <CA%2BdUSyqDY9CQUrTDGNT5xwGjRce=JvAJrJHATxAocvffbz=ewg@mail.gmail.com> <CA%2BdUSypajBopACJt4HiNOGGYb2RqSfvrL0iP3eA_j%2BRd7hVi%2BA@mail.gmail.com> <alpine.BSF.2.00.1308081356490.90799@mail.fig.ol.no> <1375963526.32115.7488635.39B9BAB2@webmail.messagingengine.com>
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On 08/08/2013 13:05, Mark Felder wrote: > On Thu, Aug 8, 2013, at 6:59, Trond Endrestøl wrote: >> >> I'm just guessing, but I doubt a jail would be able to create new ZFS >> filesystems outside its own structure, if at all able. A jail would >> however be allowed to (un)mount already existing filesystems within >> its own structure, i.e. Pool/test1. >> > > When I first reviewed his post I clearly confused "mounting" with > "creating a new zfs filesystem". Is that even supposed to be permitted > in a jail? I almost feel a sysctl disabling that by default would be > nice... DoS by zfs filesystem creation/deletion, anyone? There's a 'zfs jail' command and a 'jailed' property you can set on a ZFS which I believes allow you to manage that ZFS from within the jail. I think that extends to creating other ZFSes beneath that one (which would inherit the 'jailed' property), BICBW. Mostly I find it easier to just manage the ZFSes from the host system but then again, I'm not really making very extensive use of jails. Cheers, Matthewhome | help
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