[Libguestfs] virt-builder & virt-sysprep: Avoiding SELinux relabelling

[Richard W.M. Jones]

On Tue, Jan 21, 2014 at 01:31:05PM -0500, R P Herrold wrote:
> On Tue, 21 Jan 2014, Richard W.M. Jones wrote:
> 
> > This could be because the kernel of the libguestfs appliance doesn't
> > match the kernel of the guest.
> 
> We also encounter such problems when re-labelling images not 
> matching the dom0 kernel distribution, and just accept the 
> relabel delay (slow and linear) and second boot (boots are 
> fast) -- but I had hoped you had a solution ;)

Ah well, we do now :-)

The trick is to boot the SELinux guest once, using the magic
'qemu -no-reboot' option -- which will ensure when it tries to reboot
itself after relabelling, it instead shuts down.  Full instructions
here:

https://github.com/libguestfs/libguestfs/commit/20a4bfde9628cfeb8bea441cab7dcc94843b34e3

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v