From owner-freebsd-questions@FreeBSD.ORG Fri Jan 9 10:51:18 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4ED6016A4CE for ; Fri, 9 Jan 2004 10:51:18 -0800 (PST) Received: from hobbiton.shire.net (hobbiton.shire.net [206.71.64.250]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2FE0943D46 for ; Fri, 9 Jan 2004 10:51:17 -0800 (PST) (envelope-from chad@shire.net) Received: from [67.161.247.57] (helo=[192.168.99.66]) by hobbiton.shire.net with asmtp (TLSv1:RC4-SHA:128) (Exim 4.10) id 1Af1j1-000AT3-00 for freebsd-questions@freebsd.org; Fri, 09 Jan 2004 11:51:15 -0700 Mime-Version: 1.0 (Apple Message framework v609) Message-Id: To: freebsd-questions@freebsd.org From: "Chad Leigh -- Shire.Net LLC" Date: Fri, 9 Jan 2004 11:51:12 -0700 X-Mailer: Apple Mail (2.609) Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; format=flowed X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on hobbiton.shire.net X-Spam-Status: No, hits=-4.9 required=5.0 tests=BAYES_00 autolearn=no version=2.60 X-Spam-Level: Subject: how many mounts can a system have? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Jan 2004 18:51:18 -0000 I am experimenting with using nfs mounts from localhost to build a set of read only mounts of basic system directories so that I have a single "filebase" to base a farm of jails off of. Ie, mount localhost:/jail/master/bin /jail/myjail1/bin mount localhost:/jail/master/libexec /jail/myjail1/libexec etc Currently I am doing this with /bin /lib /libexec /sbin /usr/bin /usr/include /usr/lib /usr/libexec /usr/sbin /usr/share The following remain as separate per jail structures: /etc /var /usr/local and also something I call /local which is a separate file-backed FS (md based). This is where the user sticks all their stuff. The idea is to make it easier to upgrade and maintain a large number of jails. Upgrade the (non running) master and youonly have to merge etc and stuff like that in the individuals... It seems to be working pretty well in test. I was wondering how well this will scale (ie, how many jails I can make)? How many different mounts can I do on the base system before you either have performance problems or you hit a limit? I did some simple Googles and didn't find any answer on how many mounts you can have. Thanks Chad