OpenStack future live-migration

最新推荐文章于 2023-03-10 17:05:43 发布

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最新推荐文章于 2023-03-10 17:05:43 发布

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分类专栏： openstack 文章标签： openstack

本文链接：https://blog.youkuaiyun.com/z770816239/article/details/52311175

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本文介绍了如何在使用 QEMU/KVM 的 libvirt 驱动环境下终止或强制完成虚拟机的 Live Migration 迁移过程，并探讨了 Post-copy Live Migration 的特点及影响。此外，还讨论了如何检查特定主机上的迁移条件。

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Operators loves to kill a live migration

How to abort an in-progress live migration
nova live-migration-abort <server> <migration id>
•Abort the running job and triggers a rollback
•Works only when libvirt is used as a driver (QEMU/KVM hypervisor)
•Won’t work with post-copy live migration

Force to Complete
nova live-migration-force-complete <server> <migration id>
•Pauses VM during LM
•Automatically unpauses VM
•Works only when libvirt is used as a driver

New configuration parameter:
live_migration_inbound_addr

Post-copy Live Migration
Pre-copy Post-copy
● Move workload to destination in the middle of the process

Post-copy Live Migration
• Live migration ends in a finite time
• VM needs to be rebooted in case of failure
• Performance impact on memory reads

Check Destination on Migration
• Live migration can be forced to particular host
• Adds a new parameter to check provided host in scheduler
nova live-migration <server> [<host>] --check

详解见本人论坛帖 http://www.aboutyun.com/forum.php?mod=viewthread&tid=19615&extra=