Date: Fri, 16 Mar 2012 19:34:56 +0100 From: "Patrick M. Hausen" <hausen@punkt.de> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS & NFS Message-ID: <114CC851-7F85-470D-B203-5B2E9E35B7BD@punkt.de> In-Reply-To: <20120316174233.GN52973@zxy.spb.ru> References: <20120316172006.GM97848@zxy.spb.ru> <F53B6039-4404-49EF-88EC-96A5DDDAA881@punkt.de> <20120316174233.GN52973@zxy.spb.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
Hello, Am 16.03.2012 um 18:42 schrieb Slawa Olhovchenkov: > On Fri, Mar 16, 2012 at 06:32:43PM +0100, Patrick M. Hausen wrote: >=20 >> Hello, >>=20 >> Am 16.03.2012 um 18:20 schrieb Slawa Olhovchenkov: >>> I do NFSv3 export of ZFS. >>> root from remote host create files on ZFS witch uid 2^32-2: >>>=20 >>> # ls -l /usr/ports/packages32/ >>> total 6 >>> drwxr-xr-x 2 4294967294 wheel 5 Mar 17 00:57 All >>> drwxr-xr-x 2 4294967294 wheel 5 Mar 17 00:57 Latest >>> drwxr-xr-x 2 4294967294 wheel 3 Mar 17 00:52 archivers >>> drwxr-xr-x 2 4294967294 wheel 4 Mar 17 00:57 lang >>=20 >>=20 >> Yes? This is expected behaviour of NFS. If you don't want that, try >>=20 >> -maproot=3Droot >>=20 >> either in sharenfs option to zfs or /etc/exports, whichever it is you = are using. >=20 > hmm... > nobody:*:65534:65534:Unprivileged user:/nonexistent:/usr/sbin/nologin >=20 > 65534 !=3D 4294967294 (2^16-2 !=3D 2^32-2) >=20 > Also, I am think ZFS+NFS will be wrong for UID>2^15. I admit I overlooked that one (16 vs 32 bits). But if I'm not mistaken, = NFS does not care a bit about the name of the user "nobody" or the UID in /etc/passwd or = what-have-you. It simply sets the UID of remote root (UID 0) to the value -1. And 4294967294 happens to be -1 in 32 bits signed. So - possibly this is = built into ZFS this way. I would at least give the sharenfs=3D"..." options a try = ... HTH, Patrick --=20 punkt.de GmbH * Kaiserallee 13a * 76133 Karlsruhe Tel. 0721 9109 0 * Fax 0721 9109 100 info@punkt.de http://www.punkt.de Gf: J=FCrgen Egeling AG Mannheim 108285
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?114CC851-7F85-470D-B203-5B2E9E35B7BD>