Bug 1020611

Summary: [RFE] give some friendly messages when boot qemu-kvm with "-vnc :-5900"
Product: Red Hat Enterprise Linux 7 Reporter: Jun Li <juli>
Component: qemu-kvmAssignee: Virtualization Maintenance <virt-maint>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: low Docs Contact:
Priority: low    
Version: 7.0CC: acathrow, hhuang, juzhang, michen, mzhang, sluo, virt-maint, xfu
Target Milestone: rcKeywords: FutureFeature
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-10-22 16:29:21 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Jun Li 2013-10-18 04:52:50 UTC 
Description of problem:
When boot qemu-kvm with "-vnc :-5900", the listening port will not be 0 port of host. The listening port will be changed by host. So qemu-kvm should give some friendly messages.  

Version-Release number of selected component (if applicable):
qemu-kvm-rhev-1.5.3-9.el7.x86_64
3.10.0-34.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Boot qemu-kvm with "-vnc :-5900".
# /usr/libexec/qemu-kvm -vnc :-5900 -monitor stdio
2.Check the listening port.
(qemu) info vnc


Actual results:
(qemu) info vnc 
Server:
     address: 0.0.0.0:47569
        auth: none
Client: none

Every time this port is different.

Expected results:
When boot qemu-kvm with "-vnc :-5900", qemu-kvm can not give some warning message or forbids using this port.

Additional info:
I also test "-spice port=0", it will give a error message.
# /usr/libexec/qemu-kvm -vnc :-5900 -spice port=0 -monitor stdio
qemu-kvm: neither port nor tls-port specified for spice
Comment 3 Hai Huang 2013-10-22 16:29:21 UTC 

*** This bug has been marked as a duplicate of bug 733600 ***