Date: Fri, 2 Mar 2007 17:00:24 -0000 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Jeremy Chadwick" <koitsu@FreeBSD.org> Cc: freebsd-hackers@freebsd.org, freebsd-stable@freebsd.org Subject: Re: sysinstall creates corrupt filesystems after repartitioning Message-ID: <017901c75cec$4a20f6a0$b3db87d4@multiplay.co.uk> References: <00cb01c75c5b$4205e390$b3db87d4@multiplay.co.uk> <45E82660.4030107@freebsd.org> <008101c75cd1$42a4df10$b3db87d4@multiplay.co.uk> <45E830A8.8020104@freebsd.org> <20070302144409.GA4431@icarus.home.lan> <00eb01c75ce0$b0430380$b3db87d4@multiplay.co.uk> <20070302162042.GA6019@icarus.home.lan>
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Jeremy Chadwick wrote:
> Pardon my ignorance, but can you give me a step-by-step on how to
> reproduce this? I have a couple VMware FreeBSD sessions up and
> want to see if I can reproduce it there. I also have an actual
> FreeBSD testbox at home which I can format and reinstall.
>
> (I'm not denying the problem exists, I just want to reproduce it,
> and I think those steps would be useful to those who can fix the
> problem too.)
No problem if you have the resources / time to test this now
thats great.
Here's the steps I used, if you have any questions just shout:
1. Boot a normal 6.2 install
2. dump /usr to remote location
3. restore said dump to a empty directory on the remote machine
4. share this directory over nfs to the test machine
5. edit /etc/fstab to use the nfs /usr instead of the ufs /usr
6. reboot
7. Enable mbr changes on live fs: sysctl kern.geom.debugflags=16
8. run sysinstall
8.1 delete /dev/(da|ad)0s1f ( the /usr partition )
8.2 create a smaller /usr in the space cleared
8.3 create /data with the remaining space
8.4 Write the changes
9. quit sysinstall
10. umount -f /usr ( to restore the nfs version )
11. umount /data
12. fsck /dev/(da|ad)0s1(f|g) both will be corrupt.
Steve
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