From owner-freebsd-stable Mon May 15 4:12:31 2000 Delivered-To: freebsd-stable@freebsd.org Received: from axl.ops.uunet.co.za (axl.ops.uunet.co.za [196.31.2.163]) by hub.freebsd.org (Postfix) with ESMTP id A6C2937B7C6 for ; Mon, 15 May 2000 04:12:23 -0700 (PDT) (envelope-from sheldonh@axl.ops.uunet.co.za) Received: from sheldonh (helo=axl.ops.uunet.co.za) by axl.ops.uunet.co.za with local-esmtp (Exim 3.13 #1) id 12rIn4-000450-00; Mon, 15 May 2000 13:12:02 +0200 From: Sheldon Hearn To: Lauri Laupmaa Cc: "'stable@freebsd.org'" Subject: Re: turning softupdates on / In-reply-to: Your message of "Sun, 14 May 2000 20:13:25 +0200." <8E67E032AD23D4118F740050042F21F713@lant.mbp.ee> Date: Mon, 15 May 2000 13:12:02 +0200 Message-ID: <15685.958389122@axl.ops.uunet.co.za> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, 14 May 2000 20:13:25 +0200, Lauri Laupmaa wrote: > Some time ago I was able to tunefs -n enable /dev/rootfs + fast reset > button, but now with 4.0 it does not work... There was a bug in FreeBSD 4.0-RELEASE's tunefs (since fixed in 4.0-STABLE), which prevented the use of tunefs on filesystems mounted for writing. If you track 4.0_STABLE, this problem should go away. If not, you'll have to boot off a floppy to tune your root filesystem. Having said that, I personally discourage people from enabling soft updates on the root filesystem. Very few folks do enough writing to the root filesystem to justify this. The two cases where people think they need this are 1) /tmp is not its own filesystem Solution: mount /tmp in mfs(8) or an md (undocumented). 2) The filesystem is not partitioned; there is only the root filesystem. Solution: usually, don't do this. :-) In the second case, wanting to enable soft updates on the root filesystem makes sense. However, in the case of a normal, partitioned configuration, the root filesystem is usually small and can "run out of space" during a ``make world''. Ciao, Sheldon. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message