From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paul Boddie <paul@boddie.org.uk>
Subject: Re: Bootstrapping on a new platform
Date: Mon, 11 Dec 2017 17:36:09 +0100
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	<201712081719.15396.paul@boddie.org.uk> <87609d34rn.fsf@gnu.org>
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To: Ludovic =?utf-8?q?Court=C3=A8s?= <ludo@gnu.org>
Cc: help-guix@gnu.org

On Monday 11. December 2017 12.03.56 Ludovic Court=C3=A8s wrote:
>=20
> Paul Boddie <paul@boddie.org.uk> skribis:
> > This resembling what I showed before. Meanwhile in the child process log
> > (/tmp/guix.797) the clone call with EINVAL is this one:
> >=20
> > clone(child_stack=3D0xbffedfa4,
> > flags=3DCLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|
> > CLONE_NEWPID|CLONE_NEWNET|SIGCHLD) =3D -1 EINVAL (Invalid argument)
> >=20
> > Again, this is using the 4.9.67 kernel.
>=20
> This suggests that namespaces are not fully supported with this kernel.
> The clone(2) page has this:
>=20
>    EINVAL CLONE_NEWIPC  was specified in flags, but the kernel was not
> configured with the CONFIG_SYSVIPC and CONFIG_IPC_NS options.
>=20
>    EINVAL CLONE_NEWNET was specified in flags, but the kernel  was  not=20
> configured  with  the  CONFIG_NET_NS option.
>=20
>    EINVAL CLONE_NEWPID  was  specified  in  flags,  but  the kernel was n=
ot
> configured with the CONFIG_PID_NS option.
>=20
>    EINVAL CLONE_NEWUTS was specified in flags, but the kernel was not
> configured with the CONFIG_UTS option.
>=20
> Could it be one of these?

I ran "make menuconfig ARCH=3Dum" and saw that "User namespace" and "PID=20
Namespaces" were not enabled. So I enabled them, rebuilt the kernel, and th=
en=20
ran the User Mode Linux instance again.

This time, it would appear that running the daemon and then running a build=
=20
command gets the daemon to do some work. There have been some problems with=
=20
hashes, as reported before, but the problem with clone seems to have been=20
solved.

Sorry for the noise, but I guess this is what happens when someone tries to=
 do=20
things the hard way. Thanks for identifying the cause of the problem!

Paul