[Qemu-devel] Re: [libvirt] Re: [PATCH 2/3] Introduce monitor 'wait' command

Hollis Blanchard hollisb at us.ibm.com
Wed Apr 8 20:28:08 UTC 2009

On Wed, 2009-04-08 at 14:35 -0500, Anthony Liguori wrote:
> You're basically saying that if something isn't connected, drop them.  
> If it is connected, do a monitor_printf() such that you're never queuing 
> events.  Entirely reasonable and I've considered it.
> However, I do like the idea though of QEMU queuing events for a certain 
> period of time.  Not everyone always has something connected to a 
> monitor.  I may notice that my NFS server (which runs in a VM) is not 
> responding, VNC to the system, switch to the monitor, and take a look at 
> the event log.  If I can get the past 10 minutes of events, I may see 
> something useful like a host IO failure.

"10 minutes" is the red flag for me. Why not 5 minutes? 60 minutes? 24
hours? The fact that it's so arbitrary suggests it doesn't really
belong. If you care, you can attach a logging daemon that keeps the last
10 minutes worth of data...

Hollis Blanchard
IBM Linux Technology Center

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