[Libguestfs] Cannot login after modification shadow file with guestmount

Hi. I have a VM with CentOs6.2 on KVM. I mount an image of the VM when it's not working with guestmount: root@diehard:~# guestmount -a named-centos.img -i tmp vi /etc/shadow insert comment line into the file (esc yy p 0 i # esc :wq!), save changes, unmount the image, turn on the VM, and I cannot login. I cannot login even if I recover the shadow file. root@diehard:~# guestmount --version guestmount 1.16.15 -- Яицков Даниил Сергеевич Daneel S. Yaitskov skype: daneel_s_yaitskov google talks: rtfm.rtfm.rtfm(a)gmail.com email: dy(a)hivext.net