[Libguestfs] virt-customize is very slow in ubuntu 18.04/centos 7.5

[Gabriele Baldoni]

Thanks Rich for the fast response.
I think I will add some comment also to the ubuntu bug tracker.

In the mean while I will try to build from source.

Thanks,
Gabriele

On Wed, Sep 19, 2018 at 9:00 PM Richard W.M. Jones <rjones at redhat.com>
wrote:

> On Wed, Sep 19, 2018 at 10:32:24AM +0200, Gabriele Baldoni wrote:
> > Sorry for bothering you in this dev mailing list, I'm using libguestfs to
> > customize some vm using as bases the ubuntu cloud images.
> > But I noticed that it takes a lot and then fails when trying to install a
> > packet.
> > Same behaviour on Ubuntu 18.04 and Centos 7.5
> >
> > Ubuntu:
> > virt-customize 1.36.13
> > libvirtd (libvirt) 4.0.0
> > Centos:
> > virt-customize 1.36.10rhel=7,release=6.el7_5.2,libvirt
> > libvirtd (libvirt) 3.9.0
> >
> > This is the command I run:
> > virt-customize --hostname ato_test --uninstall cloud-init --install
> > ifupdown --run-command 'useradd -p $(openssl passwd -1 pass) fos -s
> > /bin/bash && mkdir /home/fos && adduser fos sudo' -a test.img
> > If I run using --no-network is faster, but the install obviously does not
> > work.
>
> The network/--no-network thing is a bug in Ubuntu's DHCP support.  I
> think it's this one:
>
>   https://bugs.launchpad.net/ubuntu/+source/libguestfs/+bug/1632405
>
> From the log it also looks like packages can't be installed because
> name resolution isn't working, which could be related to the above.
>
> This should however all work fine on CentOS since that's one of our
> primary development platforms.
>
> I'm not sure what else to say.  If you wanted to investigate this
> further then you might try compiling from source.  With the package
> built from source you could explore changing appliance/init to try to
> fix the DHCP problem.
>
> Make sure to read this first:
>
>   http://libguestfs.org/guestfs-building.1.html
>
> Rich.
>
> --
> Richard Jones, Virtualization Group, Red Hat
> http://people.redhat.com/~rjones
> Read my programming and virtualization blog: http://rwmj.wordpress.com
> virt-df lists disk usage of guests without needing to install any
> software inside the virtual machine.  Supports Linux and Windows.
> http://people.redhat.com/~rjones/virt-df/
>
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