Re: [Qemu-devel] [Bug 893956] Re: qemu-img bug with dynamic vhd

[Serge Hallyn]

Quoting Stefan Hajnoczi (address@hidden):
> On Tue, Sep 4, 2012 at 4:00 PM, Serge Hallyn <address@hidden> wrote:
> > Though that commit and the comments were about 127G images.  HIs is only
> > 27G.
> 
> The 127 GB limit applies to the virtual disk size, not to the size of
> the image file itself.

I thought he had converted a roughly 26GB physical disk, assumed (perhaps
wrongly) that was the virtual disk size.

> > Also, 'qemu-img info' is also showing the error, which shows that this
> > is not being done on vpc_create().
> 
> I'm not sure what you mean.  Your commit (efc8243d00) added an -EFBIG
> return to vcp_open(), not vpc_create().  This will affect qemu-img
> info.

Oops, good point.  Thanks.

> We need the header/footer contents to be sure what's going on here.

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https://bugs.launchpad.net/bugs/893956

Title:
  qemu-img bug with dynamic vhd

Status in QEMU:
  New

Bug description:
  Hye, i found a problem with qemu-img when trying to get info of a
  dynamic vhd. I made imgae of my 60GB computer hard drive with
  disk2vhd. The dynamic vhd is 21gb size.

  With 1.0-rc3 version :
  running command: qemu-img info 60_GB.VHD
  qemu-img:  Could not open '60_GB.VHD' : File too large

  0.14.1 version give me wrong information :
  image: 60_GB.VHD
  file format: vpc
  virtual size: 127G (136899993600 bytes)
  disk size: 21G

  Thanks for reply.

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