From owner-freebsd-current@FreeBSD.ORG Mon Dec 21 16:28:38 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7C0F5106566C for ; Mon, 21 Dec 2009 16:28:38 +0000 (UTC) (envelope-from mel.flynn+fbsd.current@mailing.thruhere.net) Received: from mailhub.rachie.is-a-geek.net (rachie.is-a-geek.net [66.230.99.27]) by mx1.freebsd.org (Postfix) with ESMTP id 45DB88FC28 for ; Mon, 21 Dec 2009 16:28:37 +0000 (UTC) Received: from smoochies.rachie.is-a-geek.net (mailhub.lan.rachie.is-a-geek.net [192.168.2.11]) by mailhub.rachie.is-a-geek.net (Postfix) with ESMTP id 5FD037E818; Mon, 21 Dec 2009 07:28:37 -0900 (AKST) From: Mel Flynn To: freebsd-current@freebsd.org Date: Mon, 21 Dec 2009 07:28:31 -0900 User-Agent: KMail/1.12.1 (FreeBSD/8.0-STABLE; KDE/4.3.1; i386; ; ) References: <200912210600.46044.mel.flynn+fbsd.current@mailing.thruhere.net> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <200912210728.31761.mel.flynn+fbsd.current@mailing.thruhere.net> Cc: krad Subject: Re: Some notes on RootOnZFS article in wiki X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Dec 2009 16:28:38 -0000 On Monday 21 December 2009 07:03:52 krad wrote: > 2009/12/21 Mel Flynn > ng.thruhere.net> > > > Hi, > > > > yesterday went through the RootOnZFS (gpt mirror version) and here's a > > few notes: > > 1) You cannot use the install CD. It doesn't have a livefs and so you can > > never do the actual install in 2.2. The DVD will work and the USB image. > > I ended up using the livefs CD and the USB image, cause I didn't want to > > loose > > Maybe that procedure needs modifying a bit, but you can do its from disk1. > As i have. Things are a bit clumsy but it does work. - Using 8.0-RELEASE disc 1 amd64, 2 coasters burnt on two different machines with two different OS's, the Fixit option from CD/DVD kept asking for the livefs CD, so I assume it's not on there or two different coasters had the exact same errors. - Livefs doesn't have /dist/8.0-RELEASE/*. - Ejecting livefs won't work when mounted. - umount is on CD. - /rescue/umount is too big for space left on md0. - libc.so.7+umount is also too big for space left on md0. So I'm curious how the 'clumsy' method works. > > 3) By adding the swap partitions on the two mirrored disks to /etc/fstab > > top > > actually shows the sum of these as available swap. My expectation is/was > > that > > the swap would be mirrored and thus I'd have only the size of one swap > > partition. If this isn't the case, can I get by with 1 of the two since > > they're double the intended size or should one use 2 and thus create them > > half > > the intended size? > > No as if you loose a disk you will only have 1/2 the swap you need. Point taken. > > 4) The given mount points have sane defaults, however, I use cvs to > > checkout > > the ports. It would be nice to have one example where data is already in > > a directory tree and how one can promote it to a zfs filesystem with > > special properties. > > You cant really promote something to a file system. The ideal situation is > you create the fs before you unpack the ports tar ball (or cvs). Otherwise, > rename /usr/ports (/usr/ports.old/, create the fs as desired, then rsync > the files there (or cp, or mv). Then delete the old tree. Right, I was wondering if that would actually work. If I do for example: zfs create -o compression=on zroot/usr/local/etc with files in there, would this result in the files being 'below' the mount point or would they be forever lost? -- Mel