Chapter 4. Compute Nodes in OpenStack Operations Guide
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
openstack-manuals |
Won't Fix
|
Medium
|
Unassigned |
Bug Description
I'm trying live-migration with qemu in a virtualized environment with VirtualBox VMs (not with KVM)
I get mount the NFS among controller and compute nodes, and I can see the instances directory in all compute nodes (this is directory is shared).
I can perform 'migrate' command in terminal and in the dashboard with success. So, the installation seems to be working correctly.
However, the 'live-migration' command is not working in the line command, and no errors are put in the terminal. I'm trying as follow:
# nova live-migration MY_UUID_VM_INSTANCE my_host_destine
No errors are sent to the terminal, and in the dashboard no action is performed after this command.
What I'm doing wrong? I already perform a live migration without openstack using only KVM in physical hosts. I guess that the problem could be the usage of qemu. Someone could help me?
Thanks in advance.
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Built: 2014-02-14T07:30:04 00:00
git SHA: 833c1e5aa36e234
URL: http://
source File: file:/home/
xml:id: compute_nodes
Changed in openstack-manuals: | |
status: | New → Invalid |
Changed in openstack-manuals: | |
status: | Invalid → Confirmed |
Changed in openstack-manuals: | |
importance: | Undecided → Medium |
Changed in openstack-manuals: | |
assignee: | Lucio Agostinho (outrosdiasvirao-n) → zhangjinnan (zhang-jinnan) |
assignee: | zhangjinnan (zhang-jinnan) → nobody |
Changed in openstack-manuals: | |
status: | Fix Committed → Confirmed |
tags: | added: ops-guide |
According to openstack documentation: http:// docs.openstack. org/trunk/ openstack- ops/content/ compute_ nodes.html
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Issues with Live Migration
We consider live migration an integral part of the operations of the cloud. This feature provides the ability to seamlessly move instances from one physical host to another, a necessity for performing upgrades that require reboots of the compute hosts, but only works well with shared storage.
Live migration can be also done with non-shared storage, using a feature known as KVM live block migration. While an earlier implementation of block-based migration in KVM and QEMU was considered unreliable, there is a newer, more reliable implementation of block-based live migration as of QEMU 1.4 and libvirt 1.0.2 that is also compatible with OpenStack. However, none of the authors of this guide have first-hand experience using live block migration.
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So, I'm first-hand experience using live block migration with qemu, and its not working. Someone could help? Thanks.