kvm虚拟机迁移操作手册(从Fedora39到Redhat9)
查看要迁移的虚拟机名
[root@kvm-179 ~]# virsh list --all
Id Name State
-----------------------------------
1 a running
3 b running
4 c running
5 d running
6 e running
7 f running
8 g running
9 g running
10 d running
12 f running
13 d running
14 f running
- a shut off
- b shut off
- test shut off
- a shut off
导出 xml文件
[root@kvm-179 ~]# virsh dumpxml test > test.xml
将xml复制到目标服务器
查看需要迁移的虚拟机硬盘文件
[root@kvm-179 ~]# virsh domblklist test
Target Source
----------------------------------------------------------------
vda /home/kvm/data/test/test-sda
sda -
将虚拟机硬盘文件复制到目标机器
修改xml文件
- 修改domain->devices->emulator
修改前:
<emulator>/usr/bin/qemu-system-x86_64</emulator>
修改后:
<emulator>/usr/libexec/qemu-kvm</emulator>
- 修改domain->os->type
修改前:
<type arch='x86_64' machine='pc-q35-6.1'>hvm</type>
修改后:
<type arch='x86_64' machine='pc-q35-rhel9.0.0'>hvm</type>
- 修改domain->os->loader(如果有这个标签的话)
修改前:
<loader readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
修改后:
<loader readonly='yes' type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.fd</loader>
- 修改domain->devices->disk->source
修改前:
<source file='/home/kvm/data/test/test-sda'/>
修改后:
<source file='/home/kvm/data_store2/test-sda'/>
- 注册虚拟机
[root@kvm-150 ~]# virsh define test.xml
Domain 'test' defined from test.xml