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Description of problem:
qemu-kvm do not check media while '-drive' only specified 'serial' with '-M q35'
# /usr/libexec/qemu-kvm -M q35 -drive serial=dsfs
VNC server running on `::1:5900'

With '-M pc' would not hit this issue.
# /usr/libexec/qemu-kvm -M pc -drive serial=dsfs
qemu-kvm: Device needs media, but drive is empty
qemu-kvm: Device initialization failed.
qemu-kvm: Initialization of device ide-hd failed

Version-Release number of selected component (if applicable):
qemu-kvm-1.5.3-31.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. # /usr/libexec/qemu-kvm -M q35 -drive serial=dsfs
or # /usr/libexec/qemu-kvm -M q35 -drive if=ide

Actual results:
qemu-kvm do not check whether specified media.

Expected results:
Should check media and give error messages.

Additional info:

Working on QEMU 2.3.

Verify:

Version of components:
qemu-kvm-rhev-2.3.0-4.el7.x86_64


# /usr/libexec/qemu-kvm -M q35 -drive serial=dsfs
qemu-kvm: Device needs media, but drive is empty
qemu-kvm: Initialization of device ide-hd failed: Device initialization failed.

# /usr/libexec/qemu-kvm -M q35 -drive if=ide
qemu-kvm: Device needs media, but drive is empty
qemu-kvm: Initialization of device ide-hd failed: Device initialization failed.


As above show, this bz have been verified.

Double-checked with Xu Han, so set this bz as verified. 

Any issue, free to correct me. Thx.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2546.html