Re: [Xen-users] mount a .img file

[Chris Petrolino <cpetrolino@xxxxxxxxx>]

Aha that's most likely what I was forgetting! I will give that a shot and 
report back. Thanks a million guys 

Kind Regards,

Christopher James Petrolino


On Jan 13, 2011, at 5:01 PM, dave <dave@xxxxxxxxxxxxxxx> wrote:

> If it's a disk image you need to provide an offset, for example
> 
> mount -o loop,offset=32256 /xen/guest.img /mnt/tmp
> 
> the offset depends on the partitioning of the disk file.  for example:
> 
> ~$ fdisk -l -u -c guest.img
> 
>    Device Boot      Start         End      Blocks   Id  System
> guest.img1   *        2048     9920511     4959232   83  Linux
> guest.img2         9922558    10483711      280577    5  Extended
> guest.img5         9922560    10483711      280576   82  Linux swap / Solaris
> 
> this disk image has a 2048 cylinder boot sector, so the offset would be 
> 2048*512, or 1048576
> 
> another example:
> 
> ~$ fdisk -l -u -c guestA.img
> 
>     Device Boot      Start         End      Blocks   Id  System
> guestA.img1   *          63     1767149      883543+  83  Linux
> guestA.img2         1767150     1992059      112455    5  Extended
> guestA.img5         1767213     1992059      112423+  82  Linux swap / Solaris
> 
> this has a 63 cyl boot sector, so the offset would be 63*512 = 32256.
> 
> as a shortcut, (in bash shell) you can do this:
> 
> mount -o loop,offset=$((512*63)) guestA.img /mnt/tmp
> 
> 
> 
> On 01/13/2011 01:51 PM, Steven Timm wrote:
>> What's the output of
>> 
>> file /xen/guest.img
>> 
>> probably you need to specify -t ext2
>> but the file command will tell you for sure.
>> 
>> Steve
>> 
>> 
>> On Thu, 13 Jan 2011, Christopher J Petrolino wrote:
>> 
>>> Ok guys I am wondering if anyone can help me out here. I am trying to
>>> mount a xen .img file. when I try to do a mount -o loop /xen/guest.img
>>> /mnt/tmp I get a message saying that I need to specify a partition
>>> type.. What am I missing?
>>> 
>>> Many thanks in advance,
>>> 
>>> CJP
>>> 
>>> _______________________________________________
>>> Xen-users mailing list
>>> Xen-users@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-users
>>> 
>> 
> 

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