[CentOS] migrating files for centos virtualization, virtual disk no longer boots.

Jerry Geis geisj at pagestation.com
Sat Oct 27 17:50:53 UTC 2007


All,

I am playing with virtualization on centos 5.
I took my old redhat 7 disks and created a 10GIG virtual disk, I 
installed redhat 7.
Now I am trying to get the EXACT image copied off of my actual redhat 7 disk
so that I know it is the same (including all patches, updates and OTHER 
things I did to it that I
have forgotten about).

I booted the redhat 7 image just fine at this point. I also copied it 
for backup so I dont have to install again.

So on my centos 5 box I mounted the image with a loop command.
mount -t ext3 -o loop,offset=32256 redhat7.img /mnt/image
This works fine.

Then I logged into the redhat 7 system and executed the command
tar --exclude ./proc --exclude ./mnt --exclude ./sys --exclude ./dev 
-cvf - . | ssh root at 192.168.1.8 "( cd /mnt/image ; tar xvpf -)"

Where 192.168.1.8 is my centos 5 box and /mnt/image the mounted image.

The copy seems to go fine. But after I do this when I try to virtualize 
the redhat7 image it stops at:
GRUB

When I copy the second image back on top of the first image it then 
boots again. So glad I made that copy
of the image file.

What is happening with the tar command that is messing up grub and 
keeping it from booting?

Thanks,

Jerry



More information about the CentOS mailing list