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Description of problem:

Since recent version of qemu-img shifting to use '-o compat=1.1' by default
the files created by 'qemu-img create -f qcow2' now differs then before

Version-Release number of selected component (if applicable):
file-5.11-11.el7.x86_64
qemu-img-1.5.3-30.el7.x86_64


How reproducible:
100%

Steps to Reproduce:
1.
[root@localhost ~]# qemu-img create -f qcow2 -o compat=1.1 1.1.qcow2 1G
Formatting '1.1.qcow2', fmt=qcow2 size=1073741824 compat='1.1' encryption=off cluster_size=65536 lazy_refcounts=off 
[root@localhost ~]# qemu-img create -f qcow2 default.qcow2 1G
Formatting 'default.qcow2', fmt=qcow2 size=1073741824 encryption=off cluster_size=65536 lazy_refcounts=off 

2.
[root@localhost ~]# file 0.10.qcow2 1.1.qcow2 
0.10.qcow2: QEMU QCOW Image (v2), 1073741824 bytes
1.1.qcow2:  QEMU QCOW Image (unknown version)

3.

Actual results:
could not detect the version

Expected results:
detect the qcow2 version correctly

Additional info:

Patch sent upstream, it's easy to fix and test.

http://bugs.gw.com/view.php?id=314

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.