virtualbox 中安装Centos，然后在Centos中安装XEN，无法启动？

呆若

virtualbox 中安装Centos，然后在Centos中安装XEN，无法启动？
是不是虚拟机中不能再安装XEN。最近在学习XEN， 主fedora13已经没有XEN，想用vritualbox安装个XEN，发现无法启动。


00:00:00.515 SUP: Opened VMMR0.r0 (/usr/lib/virtualbox/VMMR0.r0) at 0xf8c28020.
00:00:00.555 File system of '/home/talen/.VirtualBox/Machines/centos/Snapshots/{2575b8e2-356e-42b0-b41a-9044a7897bf0}.vdi' is ext4
00:00:00.556 Console: VM runtime error: fatal=false, errorID=Ext4PartitionDetected message="The host I/O cache for at least one controller is disabled and the medium '/home/talen/.VirtualBox/Machines/centos/Snapshots/{2575b8e2-356e-42b0-b41a-9044a7897bf0}.vdi' for this VM is located on an ext4 partition. There is a known Linux kernel bug which can lead to the corruption of the virtual disk image under these conditions.
00:00:00.556 Either enable the host I/O cache permanently in the VM settings or put the disk image and the snapshot folder onto a different file system.
00:00:00.556 The host I/O cache will now be enabled for this medium"
00:00:00.565 File system of '/home/talen/.VirtualBox/Machines/centos/Snapshots/{6958fee7-b69c-4d42-a90e-27757c7fea11}.vdi' is ext4
00:00:00.565 Console: VM runtime error: fatal=false, errorID=Ext4PartitionDetected message="The host I/O cache for at least one controller is disabled and the medium '/home/talen/.VirtualBox/Machines/centos/Snapshots/{6958fee7-b69c-4d42-a90e-27757c7fea11}.vdi' for this VM is located on an ext4 partition. There is a known Linux kernel bug which can lead to the corruption of the virtual disk image under these conditions.
00:00:00.565 Either enable the host I/O cache permanently in the VM settings or put the disk image and the snapshot folder onto a different file system.
00:00:00.565 The host I/O cache will now be enabled for this medium"
00:00:00.577 File system of '/home/talen/.VirtualBox/Machines/centos/Snapshots/{328ca9c2-c781-4a6b-9c96-8df43371747d}.vdi' is ext4
00:00:00.577 Console: VM runtime error: fatal=false, errorID=Ext4PartitionDetected message="The host I/O cache for at least one controller is disabled and the medium '/home/talen/.VirtualBox/Machines/centos/Snapshots/{328ca9c2-c781-4a6b-9c96-8df43371747d}.vdi' for this VM is located on an ext4 partition. There is a known Linux kernel bug which can lead to the corruption of the virtual disk image under these conditions.
00:00:00.577 Either enable the host I/O cache permanently in the VM settings or put the disk image and the snapshot folder onto a different file system.
00:00:00.577 The host I/O cache will now be enabled for this medium"
00:00:00.585 File system of '/home/talen/.VirtualBox/Machines/centos/Snapshots/{f1b821c3-2308-4ff1-b7db-55db0360c597}.vdi' is ext4
00:00:00.585 Console: VM runtime error: fatal=false, errorID=Ext4PartitionDetected message="The host I/O cache for at least one controller is disabled and the medium '/home/talen/.VirtualBox/Machines/centos/Snapshots/{f1b821c3-2308-4ff1-b7db-55db0360c597}.vdi' for this VM is located on an ext4 partition. There is a known Linux kernel bug which can lead to the corruption of the virtual disk image under these conditions.
00:00:00.585 Either enable the host I/O cache permanently in the VM settings or put the disk image and the snapshot folder onto a different file system.
00:00:00.585 The host I/O cache will now be enabled for this medium"

konglongk

xen貌似要cpu支持虚拟化吧,vbox装的虚拟机的vcpu应当是不支持vt的

cst05001

虚拟机里再装虚拟机，虚拟出来的最终客户机会非常慢。这样做很不推荐。

就算是无法启动，你最好也贴个报错提示。

呆若

回复 2# konglongk


    不用的，KVM要全虚拟化，XEN支持半虚拟化。

呆若

回复 3# cst05001


    我主要是学习下XEN的命令操作，不用来使用，学习下。

redhatluotao

肯定不行。
VBOX本来就是虚拟话，已经占用了物理机器的Hypervisor。你centos上面的xen在启动的时候，vbox无法提供Hypervisor给xen使用。

redhatluotao

很简单的判断方法，你登录到centos，cat /proc/cpuinfo | grep vmx 或者cat /proc/cpuinfo | grep svm.准找不到上面任何一个输出。

上google找“Xen 支持的虚拟机“类型的文章看看就明白xen要求的架构。

accessory

XEN 的半虚拟话不需要CPU 支持的. 我在 QEMU 上面装过 XEN. VB 不一定可以.

L_kernel

两重虚拟。这个没有试过。

yingtank

这个没试过，楼主思想真独特