hi:Robert Thank you for your reply. About the CPU issue,I have switched my Comoute02's CPUs to Intel(R) Xeon(R) CPU E5405 @ 2.00GHz *2, and now it works. cheers! walter Xu From: Robert van LeeuwenDate: 2014-06-24 15:58To: walterxj; openstackSubject: RE: [Openstack] compute node should have same type of cpu when live migration?> Hi,all > Today when I test instance live migration in > CLI (nova live-migration --block-migrate > 0b30368a-2eaf-42e5-918a-f855bad91f63 Compute02) ,I encounterd the following >error massages: > > But when I use dashboard > to migrate the vm,it appears to success.I'm using Havana version. > > My Compute nodes' CPU are : > Compute01:Intel(R) Xeon(R) CPU E5405 @ 2.00GHz *2 > Compute02:Intel(R) Xeon(R) CPU E5335 @ 2.00GHz *2 Walter, I know there are quite a few different code-paths for semi-similar functionality :( As far as I know using the dashboard will not issue a block migration. I *guess* it will do a non-live migration if there is no shared storage. Concerning the CPU issues: https://bugs.launchpad.net/nova/+bug/1082414 For live migrations without shared storage there is also this bug to take in account: https://bugs.launchpad.net/nova/+bug/1270825 I'm not sure what the state of migrations is in Icehouse. There were talks to move the migration tasks to the conductor/schedule(?) in the codebase but I haven't read anything in the release notes about this. Seems like there is still some room for improvement here... Cheers, Robert van Leeuwen
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