Date: Sat, 01 Feb 2014 21:55:03 -0500 From: Scott Robbins <scottro11@gmail.com> To: FreeBSD-gnats-submit@freebsd.org Subject: misc/186360: jail using nullfs and unionfs doesn't mount devfs Message-ID: <52edb2e5.c7218c0a.7d28.645a@mx.google.com> Resent-Message-ID: <201402020300.s12300tX046242@freefall.freebsd.org>
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>Number: 186360 >Category: misc >Synopsis: jail using nullfs and unionfs doesn't mount devfs >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Feb 02 03:00:00 UTC 2014 >Closed-Date: >Last-Modified: >Originator: Scott Robbins >Release: FreeBSD 10.0-RELEASE amd64 >Organization: >Environment: System: FreeBSD clevo1.scottro.net 10.0-RELEASE FreeBSD 10.0-RELEASE #0 r261350: Sat Feb 1 08:40:58 EST 2014 root@clevo1.scottro.net:/usr/obj/usr/src/sys/GENERIC amd64 >Description: When creating a jail to share a nullfs jail, as described in detail at http://home.roadrunner.com/~computertaijutsu/nullfsjail.html, based on the article at https://www.freebsd.org/doc/handbook/jails-application.html, devfs does not get mounted on the application jail, despite an entry for it in /etc/jail.conf. When using a standard jail (or jails), devfs does mount as expected. However, when using the nullfs method to share jails, after the application jail is started, its /dev only shows two directories, log and null. I realize that this is a fairly uncommon use case, but it is something that worked without problem in FreeBSD-9.2, (although in that case, entries were made in /etc/rc.conf rather than /etc/jail.conf How-To-Repeat: Install a jail as described in the link above, that shares a filesystem with a nullfs jail. Have the entry for the application jail to mount devfs and start the jail. An example jail.conf entry www_jail { path = /jails/_www_jail; mount.devfs; devfs_ruleset = 4; host.hostname = www_jail; ip4.addr = 192.168.1.199; exec.start = "/bin/sh /etc/rc"; exec.stop = "/bin/sh /etc/rc.shutdown"; } >How-To-Repeat: >Fix: The only workarounds that I have found are to either manually mount devfs after starting the jail or to create an /etc/rc.local with a line to mount devfs on each application jail. >Release-Note: >Audit-Trail: >Unformatted:
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