Re: VM terminates when doing a live migration

2011-05-22 Thread Daniel Bareiro
Hi, Michael.

On Saturday, 21 May 2011 23:39:27 -0400,
Michael Stroucken wrote:

 I'm doing some testing with KVM Live Migration. SS01 (VMHost) has
 Debian GNU/Linux 6.0.1 and Defiant (VMHost) has Debian GNU/Linux
 5.0.8. Defiant has Linux 2.6.32-15~bpo50+1 and 0.12.5+dfsg-3~bpo50+2,
 and SS01 has Linux 2.6.32-31 and 0.12.5+dfsg-5+squeeze1. Both
 instalation are 32-bit, but the kernel in SS01 is amd64 and the
 kernel in Defiant is 686.

 Migration from Defiant to SS01 is completed successfully, but when
 trying to migrate a VM from SS01 to Defiant, the VM terminates
 (segfault?). This is due to the difference in the kernel of each
 VMHost?

 Can you try saving the vms state to a file on ss01 and restoring it on  
 defiant?

I tried following your suggestion but same thing happens:

ss01:~# kvm -m 256 -boot d -net nic,vlan=0,macaddr=52:54:67:92:9d:63 \
 -net tap -daemonize -vnc :15 -k es -localtime -cdrom \
 /mnt/systemrescuecd-x86-2.0.1.iso -monitor telnet:localhost:4055,server,nowait

ss01:~# telnet localhost 4055
Trying ::1...
Connected to localhost.
Escape character is '^]'.
QEMU 0.12.5 monitor - type 'help' for more information
(qemu) stop
(qemu) migrate_set_speed 4095m
(qemu) migrate exec:gzip -c  STATEFILE.gz
Connection closed by foreign host.

ss01:~# ps ax|grep systemrescuecd
26564 pts/0S+ 0:00 grep systemrescuecd


It appears that the 'migrate' command causes termination of the virtual
machine to these parameters as well.

 Do migrations between ss01 and another amd64 box work?

I have not tried a migration where both source and destination have the
same characteristics (i386 installation and amd64 kernel).


Thanks for your reply.

Regards,
Daniel
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VM terminates when doing a live migration

2011-05-21 Thread Daniel Bareiro

Hi all!

I'm doing some testing with KVM Live Migration. SS01 (VMHost) has Debian
GNU/Linux 6.0.1 and Defiant (VMHost) has Debian GNU/Linux 5.0.8. Defiant
has Linux 2.6.32-15~bpo50+1 and 0.12.5+dfsg-3~bpo50+2, and SS01 has
Linux 2.6.32-31 and 0.12.5+dfsg-5+squeeze1. Both instalation are 32-bit,
but the kernel in SS01 is amd64 and the kernel in Defiant is 686.

Migration from Defiant to SS01 is completed successfully, but when
trying to migrate a VM from SS01 to Defiant, the VM terminates
(segfault?). This is due to the difference in the kernel of each VMHost?


Thanks in advance for your replies.

Regards,
Daniel

[1] http://www.linux-kvm.org/page/Migration
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Re: VM terminates when doing a live migration

2011-05-21 Thread Michael Stroucken



On Sat, 21 May 2011, Daniel Bareiro wrote:



Hi all!

I'm doing some testing with KVM Live Migration. SS01 (VMHost) has Debian
GNU/Linux 6.0.1 and Defiant (VMHost) has Debian GNU/Linux 5.0.8. Defiant
has Linux 2.6.32-15~bpo50+1 and 0.12.5+dfsg-3~bpo50+2, and SS01 has
Linux 2.6.32-31 and 0.12.5+dfsg-5+squeeze1. Both instalation are 32-bit,
but the kernel in SS01 is amd64 and the kernel in Defiant is 686.

Migration from Defiant to SS01 is completed successfully, but when
trying to migrate a VM from SS01 to Defiant, the VM terminates
(segfault?). This is due to the difference in the kernel of each VMHost?


Can you try saving the vms state to a file on ss01 and restoring it on 
defiant?


Do migrations between ss01 and another amd64 box work?

Greetings,
Michael.
--
Michael Stroucken
Pr Research Programmer
Carnegie Mellon University