From owner-freebsd-emulation@FreeBSD.ORG Wed Feb 11 05:01:52 2015 Return-Path: Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id F394CC06 for ; Wed, 11 Feb 2015 05:01:51 +0000 (UTC) Received: from udns.ultimatedns.net (unknown [IPv6:2602:d1:b4d6:e600:4261:86ff:fef6:aa2a]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BF168D9 for ; Wed, 11 Feb 2015 05:01:51 +0000 (UTC) Received: from ultimatedns.net (localhost [127.0.0.1]) by udns.ultimatedns.net (8.14.9/8.14.9) with ESMTP id t1B52LSs022832; Tue, 10 Feb 2015 21:02:21 -0800 (PST) (envelope-from bsd-lists@bsdforge.com) To: Kevin Oberman In-Reply-To: References: <54D4EF23.7050604@astart.com> <20150208111022.4094218f@ernst.home> <54DA6B4B.6080708@astart.com> , From: "Chris H" Subject: Re: /compat/linux and /usr/compat/linux Date: Tue, 10 Feb 2015 21:02:21 -0800 Content-Type: text/plain; charset=UTF-8; format=fixed MIME-Version: 1.0 Message-id: <0cd6ea56dadf9a02877417c2a7e3b1f6@ultimatedns.net> Content-Transfer-Encoding: 8bit Cc: gljennjohn@gmail.com, "freebsd-emulation@freebsd.org" X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Feb 2015 05:01:52 -0000 On Tue, 10 Feb 2015 18:12:43 -0800 Kevin Oberman wrote > On Tue, Feb 10, 2015 at 2:54 PM, Chris H wrote: > > > On Tue, 10 Feb 2015 12:34:19 -0800 Patrick Powell > > wrote > > > > > On 02/08/15 02:10, Gary Jennejohn wrote: > > > > On Fri, 06 Feb 2015 08:43:15 -0800 > > > > Patrick Powell wrote: > > > > > > > >> The latest linux-base appears to install into /compat, rather than > > > >> /usr/compat > > > >> > > > >> However, some FreeBSD FAQ and other documents appear to refer to > > > >> /usr/compat. > > > >> > > > >> Question: when did the move from using /usr/compat to /compat take > > > >> place (just out of curiosity)? > > > >> > > > >> Question: can linproc be in /compat/linux/proc or > > /usr/compat/linux/proc? > > > >> Question: if you have a /usr/compat/linux/lib directory will this be > > > >> added to the > > > >> libraries for linux emulation? > > > >> > > > > /compat has historically always been a symbolic link to /usr/compat: > > > > > > > > lrwxr-xr-x 1 root wheel 10 Nov 25 2011 /compat -> usr/compat > > > > > > > > linprocfs on /usr/compat/linux/proc (linprocfs, local) > > > > but in my /etc/fstab I have > > > > linproc /compat/linux/proc linprocfs rw 0 > > 0 > > > > > > > > Since /compat is a symbolic link it resolves to /usr/compat when it's > > > > used. > > > > > > > # uname -a > > > FreeBSD astart2.astart.com 9.3-RELEASE-p9 FreeBSD 9.3-RELEASE-p9 #0: Tue > > > Jan 27 10:43:40 UTC 2015 > > > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 > > > > > > # ls -l / |grep compat > > > > > > drwxr-xr-x 3 root wheel 512 Dec 3 14:41 compat > > > > > > # ls -l /usr |grep compat > > > drwxr-xr-x 3 root wheel 512 Nov 21 21:06 compat > > > > > > Note that neither /compat or /usr/compat are symbolic links. > > Interesting. On a RELENG_9 (9.3-STABLE); I only return > > /compat > > no linux, or compat available in /usr > > So what's the *real* story behind all this? > > > > > ls -ld /compat > lrwxr-xr-x 1 root wheel 11 Feb 8 09:18 /compat@ -> /usr/compat > > It is NOT created by the OS or any port, as far as I know. By default the > installation of an emulators/linux_base-* port will create /compat. Because > it can become fairly large and is in root, it was recommended some time ago > that /usr/compat be created and the contents of /compat be moved there, > /compat be deleted, and a symlink be created. Unless something was changed, > his is up to the user. > > If you have both and neither is a symlink, something was not done right at > some point. Once the symlink is in place, neither an upgrade or install of > a linux_base-* port will affect it at all. It can significantly reduce the > space required in root. > > I suppose it is possible that some linux ports may be installing stuff in > /usr/compat/linux instead of /compat/linux so that both show up if > /compat/linux is still in use. I hope this is not the case. Thanks for the informative response, Kevin. FWIW as most of the servers I manage use nVidia video; in anticipation of installing the nvidia drivers, I always install the emulators/linux_base-* port prior to the [nvidia] video driver, knowing it's a prereq. Under the circumstances (linux-base-* v [linux]ports); I wonder what, or if some "standard" should be determined || applied? Assuming one isn't already in place. Thanks again, Kevin. > -- > Kevin Oberman, Network Engineer, Retired > E-mail: rkoberman@gmail.com --Chris --