mounting partitions in a logical volume used as a physical disk for a virtual machine

James Dinkel jdinkel at gmail.com
Thu Mar 5 17:11:16 UTC 2009


On Wed, Mar 4, 2009 at 6:18 PM, Kees Cook <kees at ubuntu.com> wrote:

>
> If I'm understanding correctly, you have a host LV serving as a full drive
> for a guest, and you want to mount the partitions that are stored within
> that LV?
>
> You probably want "kpartx", which will build a dm device for each
> partition, based on the partition table it finds:
>
> set up the dm slices:
> sudo kpartx -a /dev/storagevg/drivelv
> ls -l /dev/mapper/loop0p*
>
> and to mount partition 2:
> sudo mount /dev/mapper/loop0p2 /mnt/folder .....
>
> after you're done:
> sudo kpartx -d /dev/storagevg/drivelv
>
>
> e.g. I've used this tool when converting KVM images:
>
> http://www.outflux.net/blog/archives/2008/09/03/kvm-disk-image-filesystem-growth-notes/
>
> --
> Kees Cook
> Ubuntu Security Team
>

Thank you.  I will try that out.

James
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