Libguestfs - Mar 2015 - Invalid module format errors, supermin waits forever for /sys/block/sdb/dev to appear

After failing to get things to work on a Ubuntu 14.04 host I build a 
fedora 21 environment to see if Ubuntu may have been the problem and 
didn't get quite as far so here's an official report per the FAQ
directions:

- Trying to get guests to build and have network access so package 
management actions can be done before uploading to openstack image service.

- I ran ./run virt-builder fedora-18 -v -x (also tried fedora-21, same 
issue)

- Using supermin 5.1.2, libguestfs 1.29.29 both built from source on 
fedora 21 host with all updates. "yum-builddep libguestfs" was run
first
to pull dependencies.

Short version is that I get a bunch of Invalid module format errors then 
supermin waiting for /sys/block/sdb/dev to appear and it never does. 
Full output attached.

Thanks,

Lee

On Thu, Mar 12, 2015 at 02:29:46PM -0400, Lee Revell
wrote:
> After failing to get things to work on a Ubuntu 14.04 host I build a
> fedora 21 environment to see if Ubuntu may have been the problem and
> didn't get quite as far so here's an official report per the FAQ
> directions:
> 
> - Trying to get guests to build and have network access so package
> management actions can be done before uploading to openstack image
> service.
> 
> - I ran ./run virt-builder fedora-18 -v -x (also tried fedora-21,
> same issue)
> 
> - Using supermin 5.1.2, libguestfs 1.29.29 both built from source on
> fedora 21 host with all updates. "yum-builddep libguestfs" was
run
> first to pull dependencies.
> 
> Short version is that I get a bunch of Invalid module format errors
> then supermin waiting for /sys/block/sdb/dev to appear and it never
> does. Full output attached.
[...]
> supermin: internal insmod libcrc32c.ko.xz
> insmod: init_module: libcrc32c.ko.xz: Invalid module format
> [    1.234236] input: ImExPS/2 Generic Explorer Mouse as
/devices/platform/i8042/serio1/input/input2
> supermin: waiting another 1024000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 2048000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 4096000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 8192000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 16384000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 32768000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 65536000000 ns for /sys/block/sdb/dev to appear
> supermin: waiting another 131072000000 ns for /sys/block/sdb/dev to appear
These errors are caused because supermin isn't compiled with xz-static
support.  Did you compile supermin by hand?  There's a version in
Fedora itself which should work fine.  If you're building it by hand,
then most likely you didn't run `yum-builddep supermin' first to
install all the build dependencies, including the optional ones such
as xz.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-builder quickly builds VMs from scratch
http://libguestfs.org/virt-builder.1.html

The error with networking is going to come down to how qemu is invoked
by libguestfs.

Are you using the default ('direct') backend on both Fedora &
Ubuntu?
Try doing:

  guestfish get-backend

or this command if libguestfs is not installed:

  ./run guestfish get-backend

Next do this command, all on one line:

  guestfish -v -x --network -a /dev/null run : debug sh 'exec 3<>
/dev/tcp/google.com/80 ; echo -e "GET /\n" >&3 ; cat
<&3'
  # http://www.linuxjournal.com/content/more-using-bashs-built-devtcp-file-tcpip

You'll have to look for the qemu command line in the debug output.
Both the command line parameters related to the network, and the
version of qemu are of interest.

Also note that `ping' is not expected to work inside the guest, when
using the direct backend as non-root.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org