Re: [Qemu-devel] [Bug 1655764] Re: qemu-img convert -c compression can't decompress

[Stefan Hajnoczi]

On Wed, Jan 11, 2017 at 09:58:35PM -0000, Jignasha wrote:
> When tried zlib-flate -uncompress < cirros-0.3.4-x86_64-disk.img,
> getting below error
> 
> data: incorrect header check

QEMU image compression uses the compression feature available in some
disk image formats (like qcow2).  This is not the same as compressing a
file with gzip, bzip2, or similar tools.

Therefore this error is expected and not a bug.

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