[libvirt-users] [API reference] Are there XML-handling API to retrieve info directly from xml configure file
Zhihua Che
zhihua.che at gmail.com
Wed Apr 11 13:27:23 UTC 2012
在 2012年4月11日 下午7:22,Richard W.M. Jones <rjones at redhat.com> 写道:
> On Wed, Apr 11, 2012 at 12:01:55PM +0100, Daniel P. Berrange wrote:
>> On Wed, Apr 11, 2012 at 06:41:34PM +0800, Zhihua Che wrote:
>> > BTW, Does libvirt supply any function which can return the process
>> > identifier of the domain?
>>
>> No, we don't consider the PID of the QEMU process to be part of the
>> public API, since that is a hypervisor specific implementation detail.
>> Why do you want to know that ? Maybe there is some API you can use
>> to get do the same thing
>
> I agree with Dan that you're probably doing it for the wrong reasons
> and shouldn't need to know the PID.
Yes, I know this is not reasonable, I just wanna try my luck.:(
I just wonder if I could distinguish the VM process and non-VM process.
>
> Nevertheless, it's pretty simple to map a running domain name to a
> qemu PID, by parsing the '-name' parameter from the process list.
> eg the following works for simple names (no spaces, metachars etc):
>
> $ sudo virsh list --all
> Id Name State
> ----------------------------------
> 2 builder-rhel6 running
>
> $ ps ax | grep '[-]name builder-rhel6' | awk '{print $1}'
> 2311
>
> Rich.
>
Yeah, I tried a similar way and just worried what if someone faked a VM process.
More information about the libvirt-users
mailing list