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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: MIPS64/N64 support
Date: Wed, 09 Oct 2013 12:42:45 +0200
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In-Reply-To: <87li236ilb.fsf@netris.org> (Mark H. Weaver's message of "Wed, 09
	Oct 2013 02:53:20 -0400")
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To: Mark H Weaver <mhw@netris.org>
Cc: guix-devel@gnu.org

Mark H Weaver <mhw@netris.org> skribis:

> This is the entry that reports the wrong inode number.  Note that this
> is a bind mount that mirrors /tmp/nix-build-make-boot0-3.82.drv-0 .
>
> I guess that <CHROOT>/tmp/nix-build-make-boot0-3.82.drv-0 should have
> the same inode as <CHROOT>/tmp/nix-build-make-boot0-3.82.drv-0/. , but
> apparently that is not the case from within guix-daemon, even though it
> _is_ the case when I set up the chroot manually using "mount --bind".

OK.

> One notable difference between the chroot I set up is that the bind
> mounts I created were part of the global namespace, whereas guix-daemon
> restricts the bind mounts to a private namespace.
>
> My initial hypothesis is that this is a namespace-related bug in Linux
> (the kernel).  In case it has already been fixed, I will first work on
> upgrading Linux to 3.10.15 (and if that fails, 3.11.x).

Sounds like a good idea to start with.

Also, you could fiddle with libstore/build.cc=E2=80=93e.g., by removing
CLONE_NEWNS from the =E2=80=98clone=E2=80=99 flags=E2=80=93to try to isolat=
e the bug.

Ludo=E2=80=99.