Re: [Xen-devel] XEN

[Mina Jafari <ai.minajafari@xxxxxxxxx>]

Steve,

Some statistics from kernel of domu, something like information about domu's cpu usage , its schedular and number of interrupts or something about I/O. What is important for me is that these information are accessible from xen or domu without any need to trap to xen or dom0.

I want to know what information is accessible this way, so that I choose between them which can represent intrusion to domu somehow.

Mina

On Mon, Jul 29, 2013 at 5:53 AM, Steven Maresca <steve@xxxxxxxxxxxx> wrote:

On Sat, Jul 27, 2013 at 7:27 AM, Mina Jafari <ai.minajafari@xxxxxxxxx> wrote:

Hi,

What information does dom0 or xen have about domu which doesn't need switching to domu or back?

I want to make a feature vector of some features of domu but I don't want accessing those features need extra price of switching to domu.

Mina,

Some of the information you seek might be available to domain 0 -- a fair amount of information is preserved in xenstore as a consequence of creating a VM. Similarly, libvirt and other management mechanisms often collect valuable metadata (e.g., libvirt's inspection facilities which can use libguestfs to infer the type of operating system running within a VM).  It's important to keep in mind that many virtualization tools treat each VM as a mere container and leave most OS internals to traditional deployment/management mechanisms.

What information do you wish to obtain?

Steve

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