From owner-freebsd-arch Tue Dec 11 21:10:19 2001 Delivered-To: freebsd-arch@freebsd.org Received: from rover.village.org (rover.bsdimp.com [204.144.255.66]) by hub.freebsd.org (Postfix) with ESMTP id 4E0E037B405; Tue, 11 Dec 2001 21:10:16 -0800 (PST) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.11.3/8.11.3) with ESMTP id fBC5AFa83787; Tue, 11 Dec 2001 22:10:15 -0700 (MST) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (localhost [127.0.0.1]) by harmony.village.org (8.11.6/8.11.6) with ESMTP id fBC5AEM33040; Tue, 11 Dec 2001 22:10:14 -0700 (MST) (envelope-from imp@harmony.village.org) Message-Id: <200112120510.fBC5AEM33040@harmony.village.org> To: Mike Smith Subject: Re: Getting rid of /usr file system (was: Using a larger block size on large filesystems) Cc: freebsd-arch@FreeBSD.org In-reply-to: Your message of "Tue, 11 Dec 2001 21:09:26 PST." <200112120509.fBC59Qk07926@mass.dis.org> References: <200112120509.fBC59Qk07926@mass.dis.org> Date: Tue, 11 Dec 2001 22:10:14 -0700 From: Warner Losh Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message <200112120509.fBC59Qk07926@mass.dis.org> Mike Smith writes: : > However, the argument for /usr is more than just that it is for crash : > recovery. : : It is? Sounds like there are lots of retconned reasons that could : equally easily be worked around. 8) Well, small / is useful for NFS situations as well, but those can be worked around. : > I'd have fewer if /usr was mounted read only (which it : > can't be for the man page issue, and other problems). : : For manpages, we should be using /var/man/catman. I'm not sure what : other problems you're referring to; perhaps enumerating them would help? /var/tmp sometimes is a symlink to /usr/tmp. /usr/local gets lots of things written to it by many packages. /usr/src and /usr/obj present minor problem. I know that a few other things write to /usr, but I don't recall them. I remember having to move things off /usr when I made it readonly for a real system. Also, /var is traditionally undersized for catman. We can fix that in new installs, but the long dead of the past makes it a little hard to retrofit into old systems. : > The argument is that if / is small, the chances of it being corrupt : > are smaller and the risk is lower of using it as an unchecked file : > system. : : The counter-argument is that making it "small" doesn't help it much, : wheras making it "passive" (readonly) would. Well, making it small makes it fast to recover too. I'm not trying to be difficult, btw. I just happen to like /,/usr separte based on the number of problems I've had in the past making /usr readonly on a large system. Most can be worked around, but there are a number of minor things that you need to find the hard way. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message