我想迁移使用 IDE、基于 LVM 的 KVM 客户机，该客户机运行 RHEL 6.5。我在这一页：
1) 运行 virsh edit 。从那里，编辑配置文件并调整所有行
<target dev='hda' bus='ide'/>所以它们看起来像这样
<target dev='vda' bus='virtio'/>此外，删除所有
<address type .../>行，以便 libvirt 可以适当地重新生成它们。2）在客户机内部，编辑 /etc/fstab 并将所有出现的 /dev/sdX 替换为 /dev/vdX`。
3）就这样，现在关闭机器并使用 virsh start 启动它（仅在启动的 VM 内重新启动是行不通的）。
很酷，看起来很简单，但它没有涵盖 LVM 的情况。在我的 /etc/fstab 和 /etc/grub.conf 中，我都没有找到任何可以更改的 /dev/sdX 路径（除了 grub.conf 文件中注释的路径）。我应该对 lvms 做更多的事情吗？向 VM 显示的磁盘是来自多路径 equallogic SAN 的原始 LUN。
[root@testphys ~]# virsh domblklist aplitest
Target Source
------------------------------------------------
hda /dev/eql/vol-so-aplitest
hdc -
VM 配置文件（包含磁盘配置的提取）
<disk type='block' device='disk'>
<driver name='qemu' type='raw' cache='none' io='native'/>
<source dev='/dev/eql/vol-so-aplitest'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
客户机的磁盘 fdisk -l 输出（分区 2 随后用作下面 fstab 中显示的 lvm 的物理卷）
[root@aplitest ~]# fdisk -l
Disk /dev/sda: 118.1 GB, 118122086400 bytes
255 heads, 63 sectors/track, 14360 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0000fb75
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 14361 114840576 8e Linux LVM
访客的 /etc/fstab
#
# /etc/fstab
# Created by anaconda on Fri Feb 28 15:51:07 2014
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_aplitest-lv_root / ext4 defaults 1 1
UUID=0de4d0fc-3637-4b10-908f-7cde8d9347c2 /boot ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_home /home ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_opt /opt ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_tmp /tmp ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_usr /usr ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_var /var ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_var_log /var/log ext4 defaults 1 2
/dev/mapper/vg_aplitest-lv_swap swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
客户的 /etc/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/mapper/vg_aplitest-lv_root
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux Server (2.6.32-431.5.1.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-431.5.1.el6.x86_64 ro root=/dev/mapper/vg_aplitest-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=vg_aplitest/lv_swap KEYBOARDTYPE=pc KEYTABLE=la-latin1 rd_LVM_LV=vg_aplitest/lv_root rd_NO_DM rhgb quiet
initrd /initramfs-2.6.32-431.5.1.el6.x86_64.img
title Red Hat Enterprise Linux (2.6.32-431.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/vg_aplitest-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_LVM_LV=vg_aplitest/lv_swap KEYBOARDTYPE=pc KEYTABLE=la-latin1 rd_LVM_LV=vg_aplitest/lv_root rd_NO_DM rhgb quiet
initrd /initramfs-2.6.32-431.el6.x86_64.img
干杯，
答案1
您不需要做任何其他事情。关闭并启动虚拟机。