Re: [Xen-users] pygrub CentOS domU - unable to mount lvm partition form dom0 - SOLVED

[Peter Braun <xenware@xxxxxxxxx>]

Hi Fajar

mount -o offset=32256 /dev/vg/centospy /mnt/lvm     did the trick!

Thank you very much for your help.


Br

Peter



2009/1/31 Fajar A. Nugraha <fajar@xxxxxxxxx>:
> On Sat, Jan 31, 2009 at 5:45 AM, Peter Braun <xenware@xxxxxxxxx> wrote:
>> 2009/1/30 Fajar A. Nugraha <fajar@xxxxxxxxx>:
>>> On Sat, Jan 31, 2009 at 5:05 AM, Peter Braun <xenware@xxxxxxxxx> wrote:
>>>>       Device Boot      Start         End      Blocks   Id  System
>>>> /dev/vg/centospy   *           1        3916    31455238+  83  Linux
>>>
>>> Shouldn't it be /dev/vg/centospy1 ?
>>
>> mount /dev/vg/centospy1 /mnt/lvm
>> mount: special device /dev/vg/centospy1 does not exist
>
> What I meant was, shouldn't the output of fdisk -l has "1" on it (e.g.
> centospy1 instead of cenotspy) ? If yes, then you need to create the
> device mappings first with kpartx, and THEN mount it (it will be on
> /dev/mapper, NOT /dev/vg)
>
>
>> Unfortunately kpartx is only for debian lenny or sid and I dont wannt
>> to mess my dom0 :(
>
> Then you're out of luck.
> Well there's a hard way to do it, actually. Something like
>
> mount -o offset=32256 /dev/vg/centospy /mnt/lvm
>
> To get the offset (in my example 32256), do "fdisk -lu" and multiply
> the starting sector (usually 63) with 512
>
> Regards,
>
> Fajar
>

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