[lxc-users] Creating Fedora and Ubuntu containers from inside a container fails (LXC 1.0)

[Kevin Wilson]

Michael,
Thanks for your answer. I would appreciate if you will explicitly tell
what should I do exactly, as I want to try it: how do I create the
needed two loopback devices for creating a fedora container inside a
fedora container ?

KWi.

On Sun, Mar 16, 2014 at 7:44 PM, Michael H. Warfield <mhw at wittsend.com> wrote:
> On Sun, 2014-03-16 at 18:53 +0200, Kevin Wilson wrote:
>> Hi,
>> I am trying to create a container from inside a container and it
>> fails. I have LXC 1.0 on Fedora 20 (x86_64).
>
>> When I try:
>> lxc-create -n fedoraInContainer -t fedora
>> I get:
>> ....
>>   tzdata.noarch 0:2014a-1.fc20                ustr.x86_64
>> 0:1.0.4-15.fc20
>>   util-linux.x86_64 0:2.24.1-1.fc20           xz-libs.x86_64
>> 0:5.1.2-6alpha.fc20
>>   yum-metadata-parser.x86_64 0:1.1.4-9.fc20   zlib.x86_64
>> 0:1.2.8-3.fc20
>
>> Updated:
>>   fedora-release.noarch 0:20-3
>
>> Failed:
>>   initscripts.x86_64 0:9.51-1.fc20            iputils.x86_64
>> 0:20121221-4.fc20
>>   systemd.x86_64 0:208-15.fc20
>
>> Complete!
>> Failed to download the rootfs, aborting.
>> Failed to download 'fedora base'
>> failed to install fedora
>> lxc_container: container creation template for fedoraInContainer failed
>> lxc_container: Error creating container fedoraInContainer
>> ...
>
>> and nothing under /var/lib/lxc
>
>> and when I try:
>> lxc-create -n ubuntuInContainer -t ubuntu
>
>> I get:
>> Checking cache download in /usr/var/cache/lxc/precise/rootfs-amd64 ...
>> Installing packages in template: ssh,vim,language-pack-en
>> Downloading ubuntu precise minimal ...
>> which: no qemu-debootstrap in
>> (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/sbin:/usr/bin:/sbin:/bin)
>> I: Keyring file not available at
>> /usr/share/keyrings/ubuntu-archive-keyring.gpg; switching to https
>> mirror https://mirrors.kernel.org/debian
>> I: Retrieving Release
>> E: Failed getting release file
>> https://mirrors.kernel.org/debian/dists/precise/Release
>> lxc_container: container creation template for ubuntuInContainer failed
>> lxc_container: Error creating container ubuntuInContainer
>
>> and nothing again under /var/lib/lxc.
>
>> Any ideas ?
>
> There are several complicating factors when you try and create a
> container under a container.  I use this quite frequently when trying to
> test some templates or work on boostraps.  You'll have to make sure you
> have mknod enabled for the container and (especially in the case of the
> Fedora template) you may need one or more (2 in the case of Fedora)
> loopback devices so certain images can be mounted through a loop device.
> Not sure what else can fail but it's mostly a configuration issue.
>
>> Regards,
>> Kevin Wilson
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>> lxc-users at lists.linuxcontainers.org
>> http://lists.linuxcontainers.org/listinfo/lxc-users
>>
>
> --
> Michael H. Warfield (AI4NB) | (770) 978-7061 |  mhw at WittsEnd.com
>    /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
>    NIC whois: MHW9          | An optimist believes we live in the best of all
>  PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
>
>
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