Description of problem: migration failed with -M rhel5.4.4 between host 5.5 and host 5.4.4 Version-Release number of selected component (if applicable): host 5.5.0 ---kvm-83-147 host 5.4.4 ---kvm-83-105.el5.4.19 How reproducible: 100% Steps to Reproduce: 1.start guest in host 5.4.4 with -M rhel5.4.4 # /usr/libexec/qemu-kvm -drive file=win28k-r2-ide-147.qcow2,if=ide -no-hpet -rtc-td-hack -usbdevice tablet -startdate now -smp 2 -m 2G -net nic,model=e1000,macaddr=20:20:20:11:23:12,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -cpu qemu64,+sse2 -name r2 -monitor stdio -vnc :6 -M rhel5.4.4 2.start listening mode in host 5.5 with -M rhel5.4.4 # /usr/libexec/qemu-kvm -drive file=win28k-r2-ide-147.qcow2,if=ide -no-hpet -rtc-td-hack -usbdevice tablet -startdate now -smp 2 -m 2G -net nic,model=e1000,macaddr=20:20:20:11:23:12,vlan=0 -net tap,vlan=0,script=/etc/qemu-ifup -cpu qemu64,+sse2 -name r2 -monitor stdio -vnc :6 -M rhel5.4.4 -incoming tcp:0:5889 3.start migration Actual results: In dest host qemu monitor: (qemu) Unknown savevm section type 105 load of migration failed Expected results: Additional info: migration with -M rhel5.4.4 from 5.5 to 5.4.4 failed too.
Strange. I thought I updated the bug with QA-ack earlier. Raising this as an Exception since it is one of the key features for 5.5.
During bug verification, please check if the patch fix Bug 555649.
After migrate from 5.5 to 5.4.4 with -M rhel5.4.4, nothing is in dest vnc screen, but it cannot get "load of migration failed...." in qemu monitor, `info status` in dest host got "running".
Set patch that fixes all the migrations. We collapsed two changes in 5.5, and then we only backport one of them to 5.4.z. Then 5.4.4 and 5.5 have a different idea of what cpu version 8 mean.
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 therefore 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/RHSA-2010-0271.html