Re: [Libvir] More queries

Katti, Vadiraj (STSD-Openview) wrote: >Hi, > I've more quries on libvirt apis: > 1. Is there any API in libvirt that gives me the uptime of the >guets. No there isn't, unfortunately. Best you can do is to tell how much CPU time a guest has used. I suspect this information is not available from the Xen hypervisor. If it is, then we ought to expose it where possible.

> 2. Can I know how many physical CPUs are dedicated to a VM or if >they are shared. Yes you can tell this by using the terribly complicated 'virDomainGetVcpus' function. Read the manual page _very_ carefully for this one :-( virt-top uses this function to display the % used and mapping of VCPUs to PCPUs in real time, so you might find playing with virt-top and looking at the code useful: http://hg.et.redhat.com/virt/applications/virt-top--devel?f=e100f86fdf28;... > 3. How do I know the logical cpu consumption of the guests( from >dom0 using libvirt obviously). This is sort of possible. See this page for discussion and limitations of the current API: http://et.redhat.com/~rjones/virt-top/faq.html#pcpu > 4. Can get the ip address of each of the guests with any of the >APIs No. Guests can send out packets from their interface using any IP address they want. By convention it's normally set up so that guests get an IP address from a DHCP server, but that's only a convention, not required. Imagine rephrasing the question as "Can I get the IP address of each machine on my LAN?".