virt-v2v将Esxi虚拟机迁移到Openstack中

virt-v2v简介

virt-v2v是将外部的虚拟化平台上的虚拟机转化到可以运行的KVM平台上。
它可以读取在VMware、Xen运行Hyper-V和其他虚拟机管理程序上的Windows和Linux的虚拟机，并将其转换为KVM的libvirt，OpenStack等几种方式。
ESXI平台下线，将虚机迁移至openstack运行，但windows虚机，大多是存在驱动问题的，因此需要先考虑驱动问题。

virt-v2v安装

yum install -y qemu-kvm libvirt virt-manager virt-v2v

virt-v2v使用

1、查看EXSI主机虚机列表

virsh -c esx://root@EXSI_server_IP?no_verify=1 list --all 

EXSI_server_IP: EXSI 主机IP，需要输入服务器的root密码

[root@controller ~]# virsh -c esx://root@10.200.115.55?no_verify=1 list --all
2024-03-27 03:55:58.375+0000: 25986: info : libvirt version: 4.5.0, package: 10.el7 (CentOS BuildSystem <http://bugs.centos.org>, 2018-10-31-00:13:25, x86-01.bsys.centos.org)
2024-03-27 03:55:58.375+0000: 25986: info : hostname: controller
2024-03-27 03:55:58.375+0000: 25986: warning : esxConnectOpen:857 : Ignoring unexpected path '' for non-vpx scheme 'esx'
Enter root's password for 10.200.115.55:
 Id    Name                           State
----------------------------------------------------
 9     new28                          running
 12    Openstack-Train-Control        running
 14    Kd Security Labo               running
 -     KDPA-SC                        shut off
 -     test                           shut off
 -     test-centos7                   shut off

2、拷贝虚拟机到本地，拷贝完成后会在当前目录生成一个xml文件和disk1磁盘文件

virt-v2v-copy-to-local -ic esx://root@EXSI_server_IP?no_verify=1 vm_name

vm_name: 需要拷贝到本地的虚机名称（在步骤1中获取）

[root@controller data]# virt-v2v-copy-to-local -ic esx://root@10.200.115.55?no_verify=1 test-centos7
[   0.0] Fetching the remote libvirt XML metadata ...
2024-03-27 03:58:07.008+0000: 26523: info : libvirt version: 4.5.0, package: 10.el7 (CentOS BuildSystem <http://bugs.centos.org>, 2018-10-31-00:13:25, x86-01.bsys.centos.org)
2024-03-27 03:58:07.008+0000: 26523: info : hostname: controller
2024-03-27 03:58:07.008+0000: 26523: warning : esxConnectOpen:857 : Ignoring unexpected path '' for non-vpx scheme 'esx'
Enter root's password for 10.200.115.55:
[   4.0] Parsing the remote libvirt XML metadata ...
Enter host password for user 'root':
Enter host password for user 'root':
[  11.3] Copying remote disk 1/1 to test-centos7-disk1
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 10.0G  100 10.0G    0     0  85.0M      0  0:02:00  0:02:00 --:--:-- 87.4M
[ 131.7] Writing libvirt XML metadata to test-centos7.xml ...
[ 131.7] Finishing off

3、转换数据格式，把磁盘文件的格式转换成OpenStack能够识别的格式

virt-v2v -i libvirtxml vm_name.xml -o local -os /data/vms/ -of raw

-of: 转换为raw格式
-os: 指定输出路径
vm_name.xml： 为步骤2中生成的文件

[root@controller data]# export LIBGUESTFS_BACKEND=direct;virt-v2v -i libvirtxml test-centos7.xml -o local -os /root/data/vms/ -of raw 
[   0.0] Opening the source -i libvirtxml test-centos7.xml
[   0.0] Creating an overlay to protect the source from being modified
[   0.3] Initializing the target -o local -os /root/data/vms/
[   0.3] Opening the overlay
[   4.7] Inspecting the overlay
[  16.9] Checking for sufficient free disk space in the guest
[  16.9] Estimating space required on target for each disk
[  16.9] Converting CentOS Linux release 7.5.1804 (Core)  to run on KVM
virt-v2v: This guest has virtio drivers installed.
[  75.7] Mapping filesystem data to avoid copying unused and blank areas
[  75.9] Closing the overlay
[  76.1] Checking if the guest needs BIOS or UEFI to boot
[  76.1] Assigning disks to buses
[  76.1] Copying disk 1/1 to /root/data/vms/test-centos7-sda (raw)
    (100.00/100%)
[ 134.4] Creating output metadata
[ 134.4] Finishing off

4、将转换完成后的vm_name-sda文件上传至openstack中，启动新的虚机验证。

[root@controller vms]# openstack image create centos7-raw --file /root/data/vms/test-centos7-sda --disk-format raw --container-format bare --public
+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | e806c2c3b3b0645da2083b1296b75805                     |
| container_format | bare                                                 |
| created_at       | 2024-03-27T04:11:02Z                                 |
| disk_format      | raw                                                  |
| file             | /v2/images/badc7372-6eae-4e43-ba01-95a6ac0e3c8a/file |
| id               | badc7372-6eae-4e43-ba01-95a6ac0e3c8a                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | centos7-raw                                          |
| owner            | f2eaaa2489f54f9ebef74f454befb257                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 10737418240                                          |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2024-03-27T04:13:48Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+