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Old 01-16-2012, 10:19 AM   #1
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Registered: Jan 2012
Posts: 14

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Moving an existing Centos to a XenServer with different disk layout

Hello All,

I have an existing box, with 3 OSes on it: mandriva, centos 5.6, and a dead windows.

I want to move this to a XenServer. I've moved the whole lot with a conversion utility, and it is working.

I'd like to "extract" the Centos partitions (/ /boot and swap), and have them only in one VM.

I've created a disk (/dev/hda), with three partitions on it. I've mkfs.ext3 or mkswap as required, cp'ed the data.
I've never succeeded in reinstalling grub with grub reinstall, did it manually (grub, device (hd0) /dev/hda, root (hd0,0) setup (hd0,0) )

I've labeled the partitions with tune2fs and e2label
I've edited the /etc/fstab

the drive now boots, and I reach the 'Red Hat nash version starting) point

thats when it goes bad !

I get the messages:
mkrootdev: expected fs mount point
mount missing mount point
setuproot: moving /dev failed: no such file or directory
setuproot: error mounting /proc: no such file or directory
setuproot: error mounting /sys: no such file or directory

kernel panic, etc...


What else do I need to tune to get the box running ?

Many thanks for your help

Old 01-17-2012, 02:49 AM   #2
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Registered: May 2011
Distribution: Backtrack 5 R1, Fedora 16 Security Spin, Archlinux
Posts: 25

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Hello J,

Can you provide the fstab for the centos, also please tell me whether you have cloned the entire hard drive of the old machine..
Also Please provide the fstab for the xen virtual machine


Last edited by Hamerins; 01-17-2012 at 03:39 AM.
Old 01-17-2012, 07:21 AM   #3
LQ Newbie
Registered: Jan 2012
Posts: 14

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Rep: Reputation: Disabled
thanks for your help,

the issue arose when I was trying to create a disk with only the centos partitions, leaving out the other 2 OSes

I've eventually regenerated initrd via mkinitrd and it fixed the problem,




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