netdev - Re: Namespaces and devices

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Message-ID: <AANLkTimp16eLIO7F65t7-hFgXGbVnoEIW3jGhzWTJlYa@mail.gmail.com>
Date:	Tue, 25 May 2010 11:56:05 +0200
From:	Martín Ferrari <martin.ferrari@...il.com>
To:	Daniel Lezcano <daniel.lezcano@...e.fr>
Cc:	netdev <netdev@...r.kernel.org>,
	Mathieu Lacage <mathieu.lacage@...hia.inria.fr>
Subject: Re: Namespaces and devices

Hi Daniel,

On Sun, May 23, 2010 at 16:04, Daniel Lezcano <daniel.lezcano@...e.fr> wrote:

> The documentation on this website is a bit out dated. That was the initial
> behavior but was changed as the following.
>
> All the virtual devices are destroyed with the network namespace. The
> destroyable virtual devices are identified when they have the dellink ops
> defined. If you can do the 'ip link del' command on this device, then this
> device type will be destroyed by a netns.

Fair enough, thanks for the explanation.

> About the oops,  was the it "kernel panic when using
> netns+bridges+tc(netem)" ?

No, this is a different issue. Probably it got lost in the noise of
the thread, but it is here:
http://thread.gmane.org/gmane.linux.debian.devel.bugs.general/694830/focus=158583
(it is my second mail in that thread)

>> Also, I have read somewhere (now I cannot find it) that supposedly, I
>> should be able to move real devices to a netns, but I always get
>> Invalid argument errors.
>
> Yes, that was previously the case with the proof of concept, because sysfs
> per namespace was enabled. But this feature is not merged upstream yet (but
> is on the way), so physical devices are not movable across namespaces.

OK. The plan is for them to return to netns 1 automatically at destroy?

Thanks!
-- 
Martín Ferrari
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