[CentOS-virt] Mounting LVM contained ntfs systems.

Ed Heron Ed at Heron-ent.com
Thu Feb 25 16:57:06 UTC 2010

From: "Christopher G. Stach II", Wednesday, February 24, 2010 12:45 PM

> ...
> I meant from the perspective of Linux. It is unclear to me how many layers 
> are involved and whether or not you already did the kpartx bit, but if in 
> case you didn't... If Windows is using the LV as an entire disk and 
> partitions it, you have to use that partition table, too.
> ...

  If Ben did, what I think is, a standard install, he created a LV and gave 
it to virt-install with the CD for install.  Windows would treat that LV as 
a disk and create a partition table and then create an NTFS filesystem 
inside that new partition.  (from your responses, Chris, I'm guessing you 
know this.  I'm just prefacing my guesses to put my suggestions in context.)

  In order to access the NTFS partition, you have to get Linux to read the 
partition table from the LV and create new devices.  (I'm guessing you know 
this too, Chris, from your responses, but I think Ben might not be 
understanding what really is going on).

  Recently, I was required to expand a virtual drive/NTFS for a virtual 
Windows XP machine.  I documented my process, which includes using kpartx to 
create a new device so the ntfs tools can see the nested partitions, at 
http://wiki.centos.org/EdHeron/DomU_LVM_NTFS_resize.  After posting it in 
the doc list, a simpler suggestion was made that I have yet to test. 
However, there are pieces there that might help Ben understand what is going 

  Ben, if this doc helps, let me know.  Since it explains a little about 
virtual machine nested filesystems and how to access them, I may change it 
with that in mind.

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