CentOS - Dec 2006 - Copying my system to another drive

Hi, I'm trying to copy my CentOS install to a new drive.

- old drive is /dev/hda and had
   hda1 : /boot
   hda2 : swap
   hda3 lvm
      hda5 : lvm
   hda4 : /usr/local
- new drive is /dev/hdb
   hdb1 : /boot
   hdb2 : swap
   hdb3 : /

I decided to get rid of lvm which is useless to me. I've created and 
formated the new partitions and copied anything from the old drive to 
the new one excepted the /dev entries by issuing some cp -a
With grub I did root (hd1,0) then setup (hd1)
I've also modified the content of hdb1 /boot/grub/grub.conf and passed 
param root=/dev/hdb3 to the kernel

I didn't find how to created all the /dev entries but I read somewhere 
that 2.6 kernels create them at boot time.

So, what is the problem ? (I boot my server by selecting the new drive 
from the BIOS boot devices menu) : 
boot goes until 'checking root filesystem', then complains about 
something really wrong on /dev/hdb3 and send me to a kind of rescue shell.
I did a fsck on /dev/hdb3 which says the volume is clean

Don't know what I've missed and what I have to fix...

just in case, cat /proc/mounts gives me
rootfs / rootfs rw 0,0
/proc /proc proc rw,nodiratime 0 0
none /dev tmpfs rw 0 0
/proc /proc proc rw,nodirattime 0 0
/proc/bus/usb /proc/bus/usb usbfs rw 0 0
/sys /sys sysfs rw 0 0
none /dev/pts devpts rw 0 0


Thanks and merry Christmas to all !


	

	
		
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Christophe,

I had written the procedure I use to migrate data between disks when my
server one has died (even moving /dev and conserving old permissions to
the files, I know "cp -a" does almost the same with files and
directories, but special devices mounted on /dev).

http://lists.centos.org/pipermail/centos/2006-October/071313.html

I hope this link could help you

Merry Christmas

Christophe wrote:
> Hi, I'm trying to copy my CentOS install to a new drive.
>
> - old drive is /dev/hda and had
>   hda1 : /boot
>   hda2 : swap
>   hda3 lvm
>      hda5 : lvm
>   hda4 : /usr/local
> - new drive is /dev/hdb
>   hdb1 : /boot
>   hdb2 : swap
>   hdb3 : /
>
> I decided to get rid of lvm which is useless to me. I've created and
> formated the new partitions and copied anything from the old drive to
> the new one excepted the /dev entries by issuing some cp -a
> With grub I did root (hd1,0) then setup (hd1)
> I've also modified the content of hdb1 /boot/grub/grub.conf and passed
> param root=/dev/hdb3 to the kernel
>
> I didn't find how to created all the /dev entries but I read somewhere
> that 2.6 kernels create them at boot time.
>
> So, what is the problem ? (I boot my server by selecting the new drive
> from the BIOS boot devices menu) : boot goes until 'checking root
> filesystem', then complains about something really wrong on /dev/hdb3
> and send me to a kind of rescue shell.
> I did a fsck on /dev/hdb3 which says the volume is clean
>
> Don't know what I've missed and what I have to fix...
>
> just in case, cat /proc/mounts gives me
> rootfs / rootfs rw 0,0
> /proc /proc proc rw,nodiratime 0 0
> none /dev tmpfs rw 0 0
> /proc /proc proc rw,nodirattime 0 0
> /proc/bus/usb /proc/bus/usb usbfs rw 0 0
> /sys /sys sysfs rw 0 0
> none /dev/pts devpts rw 0 0
>
>
> Thanks and merry Christmas to all !
>
>
>     
>
>     
>        
> ___________________________________________________________________________
> D?couvrez une nouvelle fa?on d'obtenir des r?ponses ? toutes vos
> questions ! Profitez des connaissances, des opinions et des
> exp?riences des internautes sur Yahoo! Questions/R?ponses
> http://fr.answers.yahoo.com
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>

-- 



Lorenzo Mart?nez Rodr?guez
Consultor de seguridad inform?tica