libvirt users - Jul 2010 - Blockpeek.. A little help please

Hi, 
   I'm trying to use blockpeek to open the contents of a file.  Inside the
vm i ran debugfs: imap /test/findme   and got: inode 32642 is part of block
group 4 located at block 131074, offset 0x0100

I try using 0x100 or 256 as the offset to blockpeek into that VM and get
nonsense as a result.

Am I calculating the offset incorrectly, is there a better way to find a
file's location on disk? And then open it?

I'm just printing the return as a string from the buffer looping over size. 
Is that incorrect?
Thanks again,
Steve

On Wed, Jul 07, 2010 at 05:47:37PM -0700, steven765 at yahoo.com
wrote:
> Hi, 
>    I'm trying to use blockpeek to open the contents of a file.  Inside
the vm i ran debugfs: imap /test/findme   and got: inode 32642 is part of block
group 4 located at block 131074, offset 0x0100
> 
> I try using 0x100 or 256 as the offset to blockpeek into that VM and get
nonsense as a result.
> 
> Am I calculating the offset incorrectly, is there a better way to find a
file's location on disk? And then open it?
> 
> I'm just printing the return as a string from the buffer looping over
size.  Is that incorrect?
> Thanks again,
> Steve 
Oh, hey, sorry--I totally forgot to respond to your earlier email.
Would libguestfs possibly be a fit for what you're trying to do?  

http://libguestfs.org/

Dave