Bug 745718

Summary:	Console confusion with two or more clients series
Product:	Red Hat Enterprise Linux 6	Reporter:	Alex Jia <ajia>
Component:	libvirt	Assignee:	Peter Krempa <pkrempa>
Status:	CLOSED DUPLICATE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	6.2	CC:	acathrow, dyuan, mzhan, pkrempa, rwu
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-10-13 08:00:14 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Alex Jia 2011-10-13 07:50:29 UTC

Description of problem:
Consoles get scrambled and unusable if two clients try to connect
at same time to the console.

Version-Release number of selected component (if applicable):
libvirt-0.9.4-17.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. append 'console=ttyS0,115200' to guest kernel cmdline in grub.conf
2. reboot guest
3. open a terminal and run virsh console $guest
4. open another terminal and run virsh console $guest
6. run other shell command such as 'ls' in the first terminal
  
Actual results:
Output information is incomplete in these 2 terminals.

Expected results:
if a client has opened the console, and the other clients should get a notice rather than continue to allow connect the console, it will let 2 clients confusion, especially, if these 2 clients are a remote users.

Additional info:
Maybe, There are 2 solutions for this issue:
1. Document these stuff in virsh man page or other place such as libvirt.org
2. Get a notice if the console is alive.

Solution 2 should be very nice.

Comment 1 Peter Krempa 2011-10-13 08:00:14 UTC


*** This bug has been marked as a duplicate of bug 729940 ***