Bug 202636

Summary: xenconsoled should persistently log PV console output
Product: Red Hat Enterprise Linux 5 Reporter: Rik van Riel <riel>
Component: xenAssignee: Daniel Berrangé <berrange>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 5.1CC: sakaia, tcallawa, xen-maint
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHEA-2007-0635 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-11-07 17:05:53 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 244435    
Bug Blocks: 223911    
Attachments:
Description Flags
Patch against 3.1.0 to add logging of guest & hv
none
Add persistent logging of guest consoles none

Description Rik van Riel 2006-08-15 16:51:24 UTC 
Description of problem:

In order to have kernel oopsen, panics and other console output logged, to help
with the analysis of why a virtual machine got into trouble, it would be
extremely useful if Xen could log the paravirt console output to a file.

The best way is probably to have one file per virtual machine, with automatic
log rotating like ttywatch does...

This is a big issue, and should probably be fixed before RHEL5 GA goes out.
Comment 2 RHEL Program Management 2007-03-26 21:03:25 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 3 Daniel Berrangé 2007-05-31 21:33:56 UTC 
Created attachment 155846 [details]
Patch against 3.1.0 to add logging of guest & hv

NB. this patch will require some small work to backport to xen 3.1.0. We will
also need to play with initscripts to provide a way to start the xenconsoled
with logging arguments on its command line.
Comment 4 Daniel Berrangé 2007-06-05 18:28:29 UTC 
Patch is now upstream

http://xenbits.xensource.com/staging/xen-unstable.hg?rev/edf407a3dd70
Comment 5 Daniel Berrangé 2007-06-08 15:13:28 UTC 
Created attachment 156582 [details]
Add persistent logging of guest consoles
Comment 7 Daniel Berrangé 2007-06-16 00:28:55 UTC 
Build xen-3.0.3-29.el5 built into dist-5E-qu-candidate now has support for
persistent logging of guest consoles. It is not enabled by default. To test try
the following

 1. Edit /etc/sysconfig/xend and XENCONSOLED_LOG_GUESTS=yes
 2. Reboot
 3. Start a guest
 4. Look at /var/log/xen/console/guest-[name].log 

The guest-[name].log file should contain all data you'd otherwise see on 'virsh
console [name]'. The data should be logged even if you are connected via the
serial console.
Comment 9 Red Hat Bugzilla 2007-07-25 00:28:13 UTC 
change QA contact
Comment 11 errata-xmlrpc 2007-11-07 17:05:53 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHEA-2007-0635.html