It seems that there is some sort of race condition related to kvm on one of my 
servers where starting kvm virtual machines will cause networking to stop.

while sleep 5 ; do ping -c4 8.8.8.8 && killall -1 qemu-system-x86_64;  done

To solve this I run the above shell code while starting kvms, if something 
goes wrong then it kills them all and networking works again.

This first happened in March, so I think it was some Debian update in that 
time period that introduced the issue.  The problem is that I don't reboot KVM 
servers very often so it's a little difficult to narrow the problem down.  I 
don't know for sure that my other KVM servers don't have the issue, maybe they 
have just got lucky every time I booted them.

Any suggestions for what to investigate?


PS that's why the LUV server has had some downtime today.

-- 
My Main Blog         http://etbe.coker.com.au/
My Documents Blog    http://doc.coker.com.au/



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