Date: Tue, 3 Aug 2004 08:53:17 +0200 From: Matt <finitesoup@gmail.com> To: questions@freebsd.org Subject: Re: using a disk "mirrored" with dd Message-ID: <1e4909970408022353424276f@mail.gmail.com> In-Reply-To: <20040803083942.C82126@gwdu60.gwdg.de> References: <1e490997040802231017bc78bf@mail.gmail.com> <20040803083942.C82126@gwdu60.gwdg.de>
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On Tue, 3 Aug 2004 08:43:24 +0200 (CEST), Konrad Heuer <kheuer2@gwdg.de> wrote: > > > > On Tue, 3 Aug 2004, Matt wrote: > > > I have a machine running 4.10-RELEASE-p2 with two identical hard disks > > -- ad0 and ad2. I would like to make a complete copy of the first disk > > to the second disk nightly for quick disaster recovery. > > > > I've dd'ed the disk as follows > > > > # dd if=/dev/ad0 of=/dev/ad2 > > > > and edited the disklabel of the second disk to change ad0s1 to ad2s1 as follows > > > > # disklabel -e -r ad2 > > > > However, I'm still unable to mount the root partion (or any other > > partition) of the second disk to tweak /etc/fstab etc. even though > > > > # mount /dev/ad2s1a /mnt > > mount: /dev/ad2s1a: Operation not permitted > > [snip] > > Thanks for any insight, and let me know if you need to see anything else. > > Did you do the dd-copy while the system was running multi-user from the > first disk? I'd expect larger problems then because the file systems > inconsistencies on the second disk may never be resolved. > > If you did it in single user mode, a 'fsck -y' for each file system on the > second disk before trying to mount may help. Yep, <slaps self> fsck -y did the trick. Thanks Konrad
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