Re: [Libguestfs] libguestfs question - multiple partitions in the guest

On Wed, Aug 01, 2012 at 01:19:45PM -0500, Shawn Kennedy wrote: virt-inspector is hopefully seeing two separate <operatingsystem>'s here. So I think what you're asking is, what root device is currently mounted in the running guest, when you're inspecting the guest from outside (hopefully read-only) using libguestfs. This isn't something that libguestfs can know since all it can see is what is in the disks, not the state of the running guest itself. But there are some heuristics you could use instead: (1) You could look at tell-tale signs to see which root device has most recently been mounted. Probably the simplest thing is to look at the date of /var/log/messages in each potential root, and choose the most recent one (since /var/log/messages is reliably and frequently updated when a guest boots and runs). (2) You could try doing what virt-v2v does, which is to parse the grub configuration to find out what root parameter is being passed to the kernel at boot time. I believe this is the code ... http://git.fedorahosted.org/git/?p=virt-v2v.git;a=blob;f=lib/Sys/VirtConv... That's odd. It should be in libguestfs-tools-c. Try: rpm -ql libguestfs-tools-c | grep guestfish and check that your $PATH is set correctly. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top