> On Dec 17, 2017, at 3:37 PM, Konstantin Belousov <kostikbel_at_gmail.com> wrote: > > 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_at_: 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_at_bacula-sd-02 ~]# ls -l /dev/pass7 >> crw------- 1 root operator 0x74 Dec 16 21:52 /dev/pass7 >> >> The command in the jail: >> >> [root_at_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 ? Yes, it does. see "This command on the host" at https://lists.freebsd.org/pipermail/freebsd-scsi/2017-December/007610.html > Same question for the host access using the nodes of the jailed devfs mount. I didn't try that, but I will soon. To be clear, does this command on the host look like what you have in mind? mtx -f /usr/jails/bacula-sd-02/dev/pass7 status -- Dan Langille - BSDCan / PGCon dan_at_langille.orgReceived on Sun Dec 17 2017 - 19:49:43 UTC
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