虚拟机快照机制说明

[待补充]

动态快照设置选项说明与默认值

[workarounds]
# When using libvirt 1.2.2 live snapshots fail intermittently under load.  This
# config option provides a mechanism to enable live snapshot while this is
# resolved.  See https://bugs.launchpad.net/nova/+bug/1334398 (boolean value)

#disable_libvirt_livesnapshot=true

检查使用的libvirt版本

[root@qs-cloud-kvm-02 ~]# rpm -aq | grep libvirt
libvirt-daemon-1.2.17-13.el7_2.5.x86_64
libvirt-daemon-kvm-1.2.17-13.el7_2.5.x86_64

libvirt版本为1.2.17 而不是1.2.2，可以启用动态快照

启用动态快照

disable_libvirt_livesnapshot=false

验证

[略]