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Re: [patch 2/6] [Network namespace] Network device sharing by view [message #4146 is a reply to message #4135]

Thu, 29 June 2006 21:07

Sam Vilain
Messages: 73
Registered: February 2006

Member

jamal wrote:
>> note: personally I'm absolutely not against virtualizing
>> the device names so that each guest can have a separate
>> name space for devices, but there should be a way to
>> 'see' _and_ 'identify' the interfaces from outside
>> (i.e. host or spectator context)
>>
>>
>
> Makes sense for the host side to have naming convention tied
> to the guest. Example as a prefix: guest0-eth0. Would it not
> be interesting to have the host also manage these interfaces
> via standard tools like ip or ifconfig etc? i.e if i admin up
> guest0-eth0, then the user in guest0 will see its eth0 going
> up.

That particular convention only works if you have network namespaces and
UTS namespaces tightly bound. We plan to have them separate - so for
that to work, each network namespace could have an arbitrary "prefix"
that determines what the interface name will look like from the outside
when combined. We'd have to be careful about length limits.

And guest0-eth0 doesn't necessarily make sense; it's not really an
ethernet interface, more like a tun or something.

So, an equally good convention might be to use sequential prefixes on
the host, like "tun", "dummy", or a new prefix - then a property of that
is what the name of the interface is perceived to be to those who are in
the corresponding network namespace.

Then the pragmatic question becomes how to correlate what you see from
`ip addr list' to guests.

Sam.

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[Message index]

		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Tue, 27 June 2006 09:38
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Daniel Lezcano on Tue, 27 June 2006 11:21
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Tue, 27 June 2006 11:52
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Tue, 27 June 2006 16:02
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Tue, 27 June 2006 16:47
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Ben Greear on Tue, 27 June 2006 17:19
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Tue, 27 June 2006 22:52
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Dave Hansen on Tue, 27 June 2006 23:12
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Alexey Kuznetsov on Tue, 27 June 2006 23:42
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Wed, 28 June 2006 03:38
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Wed, 28 June 2006 13:36
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Wed, 28 June 2006 14:21
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Wed, 28 June 2006 13:53
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Sam Vilain on Thu, 29 June 2006 21:07
		strict isolation of net interfaces By: Cedric Le Goater on Thu, 29 June 2006 22:14
		Re: strict isolation of net interfaces By: Sam Vilain on Fri, 30 June 2006 02:48
		Re: strict isolation of net interfaces By: Andrey Savochkin on Mon, 03 July 2006 14:53
		Re: strict isolation of net interfaces By: Sam Vilain on Tue, 04 July 2006 03:00
		Re: strict isolation of net interfaces By: Daniel Lezcano on Tue, 04 July 2006 12:29
		Re: strict isolation of net interfaces By: serue on Fri, 30 June 2006 02:39
		Re: strict isolation of net interfaces By: Cedric Le Goater on Fri, 30 June 2006 08:56
		Re: strict isolation of net interfaces By: Herbert Poetzl on Mon, 03 July 2006 13:36
		Re: strict isolation of net interfaces By: Daniel Lezcano on Fri, 30 June 2006 12:23
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 14:20
		Re: strict isolation of net interfaces By: Daniel Lezcano on Fri, 30 June 2006 15:22
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 17:58
		Re: strict isolation of net interfaces By: serue on Fri, 30 June 2006 16:14
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 17:41
		Re: strict isolation of net interfaces By: ebiederm on Fri, 30 June 2006 18:09
		Re: strict isolation of net interfaces By: Sam Vilain on Tue, 04 July 2006 13:13
		Re: strict isolation of net interfaces By: Daniel Lezcano on Tue, 04 July 2006 13:19
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Fri, 30 June 2006 00:15
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Herbert Poetzl on Fri, 30 June 2006 03:35
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Fri, 30 June 2006 07:45
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Fri, 30 June 2006 13:50
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Fri, 30 June 2006 15:01
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Fri, 30 June 2006 18:22
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: jamal on Fri, 30 June 2006 21:51
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Sat, 01 July 2006 00:50
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: ebiederm on Wed, 28 June 2006 14:51
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Alexey Kuznetsov on Tue, 27 June 2006 16:49
		Re: [patch 2/6] [Network namespace] Network device sharing by view By: Andrey Savochkin on Tue, 27 June 2006 11:55

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