Re: Live Migration KVM-84 Stock Vanilla 2.6.28.7

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Update on this...

The 32bit guests migrate fine if they are under low load. It looks like
the 64bit guests consistently become unresponsive during the migration.

Stu


Stuart Sheldon wrote:
> Hey all,
> 
> I started testing live migration and seem to have his a snag... It
> appears to only occasionally work. Here is my setup:
> 
> 2 Identical Machines:
> Intel(R) Xeon(R) CPU  3050  @ 2.13GHz
> 8G Ram
> Debian Lenny 64bit
> Vanilla 2.6.28.7 kernel (loading kernel modules, not KVM-84 modules)
> KVM-84
> 
> Both machines are attached to an NFS server for the guest files.
> 
> Trying to transfer hosts using virtio for net and controller. Guests are
> running 2.6.28.7 with KVM enhancement stuff built in.
> 
> host started with:
> /usr/local/kvm/bin/qemu-system-x86_64 -name lenny64/1
> -m1024 -nographic -monitor telnet:localhost:5501,server,nowait
> -serial telnet:localhost:5601,server,nowait
> -drivefile=/home/lenny64/hdisc.img,if=virtio,cache=writeback,boot=on
> -
> -netnic,macaddr=52:54:00:12:00:01,model=virtio-nettap,ifname=tap1,script=/etc/kvm/kvm-ifup-br0
> 
> -daemonize
> 
> Migration Host Started With
> host started with:
> /usr/local/kvm/bin/qemu-system-x86_64 -name lenny64/1
> -m1024 -nographic -monitor telnet:localhost:5501,server,nowait
> -serial telnet:localhost:5601,server,nowait
> -drivefile=/home/lenny64/hdisc.img,if=virtio,cache=writeback,boot=on
> -
> -netnic,macaddr=52:54:00:12:00:01,model=virtio-nettap,ifname=tap1,script=/etc/kvm/kvm-ifup-br0
> 
> -daemonize -incoming tcp:0:4601
> 
> Execute migrate tcp:migrationhost:4601
> 
> Sometimes it moves without a problem, other times the migrated host
> hangs without reponse...
> 
> Let me know what I can do to help fix this feature, or if I'm doing
> something wrong...
> 
> Thanks in advance,
> 
> Stu Sheldon
> ACT USA
> 
> 
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