From owner-freebsd-current@freebsd.org Sun Dec 17 19:52:41 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 21217E93FDF for ; Sun, 17 Dec 2017 19:52:41 +0000 (UTC) (envelope-from dan@langille.org) Received: from clavin2.langille.org (clavin2.langille.org [199.233.228.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "clavin.langille.org", Issuer "BSD Cabal Headquarters" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 032A97C138 for ; Sun, 17 Dec 2017 19:52:40 +0000 (UTC) (envelope-from dan@langille.org) Received: from (clavin2.int.langille.org (clavin2.int.unixathome.org [10.4.7.7]) (Authenticated sender: hidden) with ESMTPSA id 359BA1F80C for ; Sun, 17 Dec 2017 19:52:39 +0000 (UTC) From: Dan Langille Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 11.2 \(3445.5.20\)) Subject: cannot access pass device from within jail Message-Id: Date: Sun, 17 Dec 2017 14:52:12 -0500 To: freebsd-current@freebsd.org X-Mailer: Apple Mail (2.3445.5.20) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 17 Dec 2017 19:52:41 -0000 Hello, What suggestions do you have for where I should look next? I'm happy to = start installing various builds of FreeBSD in order to track down which = commit caused this. I'm trying to access a tape library from within a jail running on a = FreeBSD 11.1 host. sa(4) devices are working (e.g. I can rewind nsa0). pass(4) devices (i.e. the tape changer ch0) are not working. This = morning I posted to -scsi@: = https://lists.freebsd.org/pipermail/freebsd-scsi/2017-December/007608.html= The device appears in the jail and has appropriate permissions. This = access was granted via /etc/devfs.rules using the same approach I used for FreeBSD 10.3 The permissions in the jail: [root@bacula-sd-02 ~]# ls -l /dev/pass7 crw------- 1 root operator 0x74 Dec 16 21:52 /dev/pass7 The command in the jail: [root@bacula-sd-02 ~]# mtx -f /dev/pass7 status=20 cannot open SCSI device '/dev/pass7' - Operation not permitted Here is the truss output of the command in question: = https://gist.github.com/dlangille/b80ee804b8080e1cbf5b5ab67f0bdabe Thank you. --=20 Dan Langille - BSDCan / PGCon dan@langille.org