From: Giovanni Biscuolo <g@xelera.eu>
To: "Ludovic Courtès" <ludo@gnu.org>,
"pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>
Cc: 35662@debbugs.gnu.org
Subject: bug#35662: Really relocatable binaries crash with Permission denied
Date: Wed, 15 May 2019 17:20:25 +0200 [thread overview]
Message-ID: <87pnojd9s6.fsf@roquette.mug.biscuolo.net> (raw)
In-Reply-To: <87h89wydf7.fsf@gnu.org>
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Hello Ludovic and Florian,
I cannot help here, just some thoughts
as you probably already know, Florian, ZFS is not supported in Linux for
various reasons, above all for a controversial licensing problem [1]
so using zfsonlinux (the ZFS Linux unofficial kernel module) is
basically calling for problems
Ludovic Courtès <ludo@gnu.org> writes:
> "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis:
[...]
>> The admins have confirmed that they use “Proxmox on ZFS” (judging from
>> <https://pve.proxmox.com/wiki/ZFS_on_Linux> it is ZFS on Linux)
it's not clearly stated there, I guess it's
https://github.com/zfsonlinux/zfs
>> and
>> they have confirmed that they have disabled user namespaces in their
>> Proxmox settings.
I do not understand what this means: if namespaces are disabled **in
kernel** that whould be detected and guix relocatable binaries should
use PRoot by default: am I wrong?
If "disabled user namespace in Promox settings" means it have something
to do with ZFS filesystem settings, well: it's unorthodox at least :-)
> User namespaces are orthogonal to file systems, but anyway it looks like
> ZFS is refusing to let us do these things.
I don't know if this have something to do with this bug, but:
ZFS is confused by user namespaces (uid/gid mapping) when used with acltype=posixacl
https://github.com/zfsonlinux/zfs/issues/4177
Florian: it should be solved but AFAIU it depends on the
kernel/zfsonlinux combination
> I don’t have any great option to offer. You could perhaps modify
> run-in-namespace.c so that it doesn’t even try user namespaces and
> instead goes directly to the PRoot option?
Ludovic (and others): is it possible to add an option to "guix pack -RR"
(-RRF?!?) to force the use of PRoot for resulting relocated binaries?
> However working around this behavior of ZFS it not completely trivial
> and I’m not sure we should put much energy to paper over non-standard
> file system behavior.
I agree, this seems a zfsonlinux bug: Florian please can you report it
upstream to zfsonlinux?
[...]
HTH! Gio'
[1] https://www.fsf.org/licensing/zfs-and-linux
https://sfconservancy.org/blog/2016/feb/25/zfs-and-linux/
--
Giovanni Biscuolo
Xelera IT Infrastructures
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next prev parent reply other threads:[~2019-05-15 15:23 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 22:01 bug#35662: Really relocatable binaries crash with Permission denied pelzflorian (Florian Pelz)
2019-05-10 5:54 ` pelzflorian (Florian Pelz)
2019-05-10 21:50 ` Ludovic Courtès
2019-05-11 5:05 ` pelzflorian (Florian Pelz)
2019-05-13 7:49 ` Ludovic Courtès
2019-05-13 10:34 ` pelzflorian (Florian Pelz)
2019-05-13 13:54 ` Ludovic Courtès
2019-05-13 15:17 ` pelzflorian (Florian Pelz)
2019-05-13 20:39 ` Ludovic Courtès
2019-05-13 20:45 ` pelzflorian (Florian Pelz)
2019-05-14 8:05 ` pelzflorian (Florian Pelz)
2019-05-14 20:43 ` Ludovic Courtès
2019-05-14 21:04 ` pelzflorian (Florian Pelz)
2019-05-15 16:15 ` Ludovic Courtès
2019-05-15 15:20 ` Giovanni Biscuolo [this message]
2019-05-16 11:02 ` pelzflorian (Florian Pelz)
2019-05-16 11:10 ` Ludovic Courtès
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