Re: [Xen-users] Managing DomU partitions in XEN+LVM systems?

["Jordi Segues" <jordisd.mailing@xxxxxxxxx>]

Hello,

Thanks for your answers.
It's exact, when you recreate the table the data is not lost.

There are my commands:

#You extend your LVM partition
lvextend -L +5G /dev/LVM/2003-clone

#Open cfdisk
fdisk /dev/LVM/2003-clone

        #Delete NTFS partition
        #Recreate a bigger NTFS partition
        #Put the boot flag
        #We write changes "W"
        #Quit cfdisk

#We make a ntfsresize, it will extend the old NTFS filesystem to the
new size of the LVM partition
kpartx -a /dev/LVM/2003-clone
ntfsresize /dev/mapper/2003-clonep1
kpartx -d /dev/LVM/2003-clone

#Now windows 2003 boots perfectly, without data loss and with more disk space ;)

On 4/20/07, Derek <xen@xxxxxxxxxxxxxxxx> wrote:
> On 4/19/07, Jordi Segues <jordisd.mailing@xxxxxxxxx> wrote:
> > but for me the problem is that fdisk can't enlarge a partition! It
> > says you must delete it and then recreate it, but if I do this I lose
> > all my 2003 system.
>
> When I did it, I just used fdisk to delete the partition, and then to
> re-create a new one of the larger size.  The new one must start at the
> exact same cylinder as the old one did, but can have more cylinders.  It's a
> little scary because of the messages about data loss, but it worked fine for
> me.
>
> To the best of my knowledge, fdisk doesn't touch any other part of the disk
> other than the partition table, so provided the new partition is larger than
> the old, and begins at the same position as the old, everything works fine.
>
> One precaution I took -- and I recommend you do the same.  I first backed up
> the entire logical volume, by creating another one of the same size and
> using dd to copy the content.  That way, if did anything stupid and broke my
> windows filesystem, I'd have been able to recreate it.
>
> Derek.
>
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