Mac-Vlan - Revision history

Kir: added to api and external cat

2016-11-02T01:10:03Z

added to api and external cat

Kir: enlarged

2016-11-02T00:26:17Z

enlarged

Tycho Andersen at 21:53, 21 October 2016

2016-10-21T21:53:01Z

Xemul at 12:35, 21 October 2016

2016-10-21T12:35:31Z

Xemul at 12:34, 21 October 2016

2016-10-21T12:34:47Z

Xemul: Created page with "Category: Empty articles Category: Networking"

2016-10-21T12:34:25Z

Created page with "Category: Empty articles Category: Networking"

New page

[[Category: Empty articles]]
[[Category: Networking]]

← Older revision		Revision as of 01:10, 2 November 2016
Line 14:		Line 14:

	[[Category: Network]]		[[Category: Network]]
		+	[[Category: API]]
		+	[[Category: External]]
	[[Category: Under the hood]]		[[Category: Under the hood]]

← Older revision		Revision as of 00:26, 2 November 2016
Line 1:		Line 1:
−	CRIU supports checkpointing and restoring network namespaces with macvlan devices. On dump, criu will automatically detect these devices and no extra arguments are needed. On restore, users must specify the master device in the host network namespace via <code>--external macvlan[~~internal~~]:~~external~~</code>, where ~~internal~~ and ~~external are~~ the ~~names of the internal and external devices, respectively~~.	+	CRIU supports checkpointing and restoring network namespaces with macvlan devices.
		+
		+	== Dump ==
		+
		+	On dump, criu will automatically detect these devices and no extra arguments are needed. The name of macvlan device inside the checkpointed namespace is saved to [[images]].
		+
		+	== Restore ==
		+
		+	On restore, users must specify the master device in the host network namespace via <code>--external macvlan[''inner_dev'']:''outer_dev''</code>, where <code>''inner_dev''</code> is the device name in restored namespace, and <code>''outer_dev''</code> is a network device existing in the same namespace as CRIU.
		+
		+	== Implementation details ==

	The restore process for macvlan interfaces is somewhat convoluted, since the actual macvlan interface lives inside the network namespace, but the master device lives outside. CRIU uses <code>IFLA_NET_NS_ID</code> to specify the network namespace that the master link lives in, and uses <code>IFLA_NET_NS_FD</code> to specify the network namespace the slave link should be created in. In the user namespace case, the netlink call is made from usernsd, since the caller needs to have CAP_NET_ADMIN in both network namespaces. In the non-userns case, we setns around to create a netlink socket in CRIU's netns, and then use that socket to actually create the macvlan link.		The restore process for macvlan interfaces is somewhat convoluted, since the actual macvlan interface lives inside the network namespace, but the master device lives outside. CRIU uses <code>IFLA_NET_NS_ID</code> to specify the network namespace that the master link lives in, and uses <code>IFLA_NET_NS_FD</code> to specify the network namespace the slave link should be created in. In the user namespace case, the netlink call is made from usernsd, since the caller needs to have CAP_NET_ADMIN in both network namespaces. In the non-userns case, we setns around to create a netlink socket in CRIU's netns, and then use that socket to actually create the macvlan link.

@@ Line 1: / Line 1: @@
-[[Category: Empty articles]]
+CRIU supports checkpointing and restoring network namespaces with macvlan devices. On dump, criu will automatically detect these devices and no extra arguments are needed. On restore, users *must* specify the master device in the host network namespace via <code>--external macvlan[internal]:external</code>, where internal and external are the names of the internal and external devices, respectively.
 [[Category: Network]]
 [[Category: Under the hood]]

← Older revision		Revision as of 12:35, 21 October 2016
Line 1:		Line 1:
	[[Category: Empty articles]]		[[Category: Empty articles]]
	[[Category: Network]]		[[Category: Network]]
		+	[[Category: Under the hood]]

← Older revision		Revision as of 12:34, 21 October 2016
Line 1:		Line 1:
	[[Category: Empty articles]]		[[Category: Empty articles]]
−	[[Category: ~~Networking~~]]	+	[[Category: Network]]