From owner-freebsd-questions@FreeBSD.ORG Wed Jul 6 17:07:53 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org 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 A90CA16A41C for ; Wed, 6 Jul 2005 17:07:53 +0000 (GMT) (envelope-from ruben@bloemgarten.demon.nl) Received: from post-22.mail.nl.demon.net (post-22.mail.nl.demon.net [194.159.73.192]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4D6F543D46 for ; Wed, 6 Jul 2005 17:07:53 +0000 (GMT) (envelope-from ruben@bloemgarten.demon.nl) Received: from axelds.demon.nl ([83.160.138.74]:5798 helo=abubbletprpdda) by post-22.mail.nl.demon.net with esmtp (Exim 4.43) id 1DqDNH-00092L-GA; Wed, 06 Jul 2005 17:07:51 +0000 From: "Ruben Bloemgarten" To: "'Chris Roos'" , Date: Wed, 6 Jul 2005 19:07:36 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1250" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 Thread-Index: AcWCRWIXzY6aN+J0RKql7SnRScMdAAAB8DzA In-Reply-To: <42CC027B.7030808@seagul.co.uk> Message-Id: <20050706170753.4D6F543D46@mx1.FreeBSD.org> Cc: Subject: RE: Migrating FreeBsd installation to another hard drive X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ruben@bloemgarten.demon.nl List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jul 2005 17:07:53 -0000 Hi there, I had to do something similar i.e. change RAID levels, there is no need to install anything. Just use the fixit CD. Here is my procedure : Ofcourse you'll have to change disk[slice] names to what suits you. NOTE: I used tar for the /usr slice as I had some size constraints and therefore needed some compression ( I could have piped the dump to gzip ofcourse, but didn't). In my opinion dump&restore is the best procedure. But dd works as well. Regards, Ruben 1. boot from CD 2. goto fixit CD 3. create new mount point --> # mkdir /new_mnt 4. mount external drive /new_mnt --> # mount /dev/da0s1 /new_mnt 5. mount / on /mnt # mount /dev/ar0s1a /mnt 6. backup fstab and bsdlabel --> # cp /mnt/etc/fstab /new_mnt/fstab.BAK # bsdlabel ar0s1 > /new_mnt/bsdlabel.BAK 7. dump / --> # umount /mnt # dump -0au -C 32 -f /new_mnt/root_dump /dev/ar0s1a 8. dump /var --> # dump -0au -C 32 -f /new_mnt/var_dump /dev/ar0s1e 9. tar /usr ( or only those subsystems which contain userdata (dbase,mail,etc) --> # mount /dev/ar0s1f /mnt # cd /mnt # tar czf /new_mnt/usr_tar.tar.gz ./ 10.unmount all mounted filesystems --> # umount /mnt # umount /new_mnt 11. exit fixit and boot CD 12. power down 13. replace disks 14. boot to RAID config tool 15. set array to RAID0 16. reboot to CD 17. exit to FIXIT 18. erase current disklabel & create new label with one slice --> # dd if=/dev/zero of=/dev/ar0 bs=512 count=32 # fdisk -BI /dev/ar0 # dd if=/dev/zero of=/dev/ar0s1 bs=512 count=32 # bsdlabel -w -B da0s1 19. read disklabel & note c partition value 20. mount external disk & edit saved slice (step 6) 21. write edited label to disk 22. --> # bsdlabel -R /dev/ar0s1 /new_mnt 23. --> # newfs /dev/ar0s1[a,d,e,f) 24. --> # mount /dev/ar0s1d /tmp 25. --> # export TMPDIR=/tmp 26. mount & restore / --> # mount /dev/ar0s1a /mnt # cd /mnt # restore rf [PATHNAME_TO_root_dump] 27. umounting / and mount & restore /var --> # cd .. # umount /mnt # mount /dev/ar0s1e /mnt # cd /mnt # restore rf [PATHNAME_TO_var_dump] 28. extracting usr_tar.tar.gz into /usr --> # cd .. # umount /mnt # mount /dev/ar0s1f /mnt # cd /mnt # tar xzvf [PATHNAME_TO_usrtar] ./ 29. umount all open filesystems --> # umount /tmp # umount /mnt # umount /new_mnt 30. exit single user mode and startup -----Original Message----- From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Chris Roos Sent: July 06, 2005 6:11 PM To: freebsd-questions@freebsd.org Subject: Migrating FreeBsd installation to another hard drive Hi, I've recently had the job of moving a FreeBsd installation to another hard drive. After quite a lot of reading I got round to following this article[1] using a VMWare FreeBsd instance. In brief the article uses dump and restore to move the data from one mounted partition to another in single user mode. It also suggests that before you do this, you perform a minimum install on the destination disk to ensure that it boots fine. First time round, I did the minimum install and then followed the steps (minus the MAKEDEV step as I'm running 5.3R) to backup the data to the destination. This all worked fine. Second time round, I didn't do a minimum install, rather I just set-up the slice and partitions on the destination using sysinstall, and then did the dump/restore. On booting from the destination disk this time, nothing happened. I reasoned that it was because I had no boot manager installed and so went ahead and used boot0cfg -B to install the FreeBsd boot manager. The disk now boots; however, I would prefer to use the equivalent of the 'Standard - Install a standard MBR (no boot manager)' option from sysinstall as FreeBsd is the only OS on the disk and so I don't need the option of booting to it or anything else. I'm guessing that I would use fdisk to do this but if so am not entirely sure how. In addition, is this safe to perform on a disk with data or would I need to go through the dump/restore process again? One final question is whether the dump/restore process is the best approach in this instance? I have read about using dd but am not entirely sure whether this would do what I need? Thanks in advance for any help, Chris [1] http://bsdvault.net/sections.php?op=viewarticle&artid=121 _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.8.9/42 - Release Date: 07/06/2005 -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.8.9/42 - Release Date: 07/06/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.8.9/42 - Release Date: 07/06/2005