Many Thanks Richard for your reply.

#  /usr/libexec/qemu-kvm -nographic -machine accel=kvm:tcg -device \?

open /dev/kvm: No such file or directory
failed to initialize KVM: Operation not permitted
Back to tcg accelerator.
Could not allocate dynamic translator buffer

I tried executing "setsebool -P virt_use_execmem=on" also after looking at  "http://libguestfs.org/guestfs-faq.1.html"  but that also did not help.
Please guide me how to fix this issue and proceed further.

Thanks again for your help.

On Wed, Sep 17, 2014 at 8:14 PM, Richard W.M. Jones <rjones@redhat.com> wrote:
On Wed, Sep 17, 2014 at 07:59:03PM +0530, Priyanka Ranjan wrote:
> libguestfs: command: run: /usr/libexec/qemu-kvm
> libguestfs: command: run: \ -nographic
> libguestfs: command: run: \ -machine accel=kvm:tcg
> libguestfs: command: run: \ -device ?
> libguestfs: error: /usr/libexec/qemu-kvm exited with error status 1, see
> debug messages above
> libguestfs: trace: launch = -1 (error)

It looks as if qemu is broken on your machine.  What's the output of:

  /usr/libexec/qemu-kvm -nographic -machine accel=kvm:tcg -device \?

Note that you don't need to run libguestfs tools as root.

Rich.

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