Date: Sun, 17 Dec 2017 22:37:34 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Dan Langille <dan@langille.org> Cc: freebsd-current@freebsd.org Subject: Re: cannot access pass device from within jail Message-ID: <20171217203734.GA2272@kib.kiev.ua> In-Reply-To: <E1314554-C8D0-4E8F-B8DB-E0B4D9DE325F@langille.org> References: <E1314554-C8D0-4E8F-B8DB-E0B4D9DE325F@langille.org>
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On Sun, Dec 17, 2017 at 02:52:12PM -0500, Dan Langille wrote: > 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 > 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 Does it work to access the pass device from host using host' /dev ? Same question for the host access using the nodes of the jailed devfs mount.
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