Date: Fri, 10 Oct 2008 07:41:11 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Evren Yurtesen <yurtesen@ispro.net> Cc: Sean Bruno <sbruno@miralink.com>, freebsd-hackers@FreeBSD.ORG, Mike Meyer <mwm@mired.org>, Oliver Fromme <olli@lurza.secnetix.de>, Shaun Amott <shaun@FreeBSD.ORG> Subject: Re: continuous backup solution for FreeBSD Message-ID: <20081010144111.GA34609@icarus.home.lan> In-Reply-To: <48EF5052.2000707@ispro.net> References: <200810091411.m99EB0Vo007538@lurza.secnetix.de> <20081010023428.87556dt18ejyzf48@mail.ispro.net> <20081009200641.60d0b236@bhuda.mired.org> <48EF5052.2000707@ispro.net>
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On Fri, Oct 10, 2008 at 03:53:38PM +0300, Evren Yurtesen wrote: > Mike Meyer wrote: >> On Fri, 10 Oct 2008 02:34:28 +0300 >> yurtesen@ispro.net wrote: >> >>> Quoting "Oliver Fromme" <olli@lurza.secnetix.de>: >>> >>>> These features are readily available right now on FreeBSD. >>>> You don't have to code anything. >>> Well with 2 downsides, >> >> Once you actually try and implement these solutions, you'll see that >> your "downsides" are largely figments of your imagination. > > So if it is my imagination, how can I actually convert UFS to ZFS > easily? Everybody seems to say that this is easy and that is easy. It's not that easy. I really don't know why people are telling you it is. Converting some filesystems are easier than others; /home (if you create one) for example is generally easy: 1) ZFS fs is called foo/home, mounted as /mnt 2) fstat, ensure nothing is using /home -- if something is, shut it down or kill it 3) rsync or cpdup /home files to /mnt 4) umount /home 5) zfs set mountpoint=/home foo/home 6) Restart said processes or daemons "See! It's like I said! EASY!" You can do this with /var as well. Now try /usr. Hope you've got /rescue available, because once /usr/lib and /usr/libexec disappear, you're in trouble. Good luck doing this in multi-user, too. And finally, the root fs. Whoever says "this is easy" is kidding themselves; it's a pain. You get to make a new filesystem called /boot, and have all sorts of fun. It's really not a snap-fingers-voila thing, and I will gladly argue with anyone who thinks otherwise. Is it do-able though? Yes. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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