[Qemu-devel] [Bug 1776920] Re: qemu-img convert on Mac OSX creates corrupt images

[Waldemar Kozaczuk]

Bingo! Adding '-S 0' makes convert work. But it is not perfect as the
end result is fully allocated image.

So with qcow2 like this:

image: mysql-example.qemu
file format: qcow2
virtual size: 10G (10737418240 bytes)
disk size: 50M
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: false
    refcount bits: 16
    corrupt: false

and do this:

qemu-img convert mysql-example.qemu -S 0 -O vmdk mysql-example.vbox

I get 10G vmdk file:
10738794496 Jul  6 18:27 mysql-example.vbox

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https://bugs.launchpad.net/bugs/1776920

Title:
  qemu-img convert on Mac OSX creates corrupt images

Status in QEMU:
  New

Bug description:
  An image created by qemu-img create, then modified by another program
  is converted to bad/corrupt image when using convert sub command on
  Mac OSX. The same convert works on Linux. The version of qemu-img is
  2.12.

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