是否可以运行OS命令来确定是否在基于Xen的虚拟机中运行 [英] Is there an OS command I can run to determine if running inside a Xen based virtual machine

问题描述

我是否可以在基于Xen的虚拟机中运行OS命令，以告诉我它是一个虚拟盒子，而不是物理盒子-我听说内核对此有一些自我意识.例如像"ps"输出中的额外列之类的东西? [我知道vmstat提供了"st"列，但是我在运行Linux Kernel 2.6.11及更高版本的物理主机盒上也看到了此信息.]

Is there an OS command I can run from within a Xen based virtual machine to tell me that it is a virtual box rather than a physical box - I heard that the kernel had some self awareness smarts about it. e.g. like an extra column in "ps" output or something? [I know vmstat provides the "st" column but I have seen this on physical host boxes running Linux Kernel 2.6.11 and greater as well].

非常感谢，

保罗

推荐答案

Dmesg 可能会给您一些帮助来自内核消息缓冲区的提示，这是来自Slicehost的虚拟化Ubuntu实例上的输出:

Dmesg may give some hints from the kernel message buffer, here is output on a virtualized Ubuntu instance from Slicehost:

bvm@qdbp:~$ sudo dmesg | grep Xen
[    0.000000]  Xen: 0000000000000000 - 00000000000a0000 (usable)
[    0.000000]  Xen: 00000000000a0000 - 0000000000100000 (reserved)
[    0.000000]  Xen: 0000000000100000 - 0000000010000000 (usable)
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 3.1.2-rc1
[    0.000000] Xen: using vcpu_info placement
[    0.000000] Xen: using vcpuop timer interface
[    0.000000] installing Xen timer for CPU 0
[    0.021223] installing Xen timer for CPU 1
[    0.046157] installing Xen timer for CPU 2
[    0.046157] installing Xen timer for CPU 3
[    0.265880] Initialising Xen virtual ethernet driver.

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