Re: [zones-discuss] Zone Networking and Backups
On 01/23/09 14:41, Matt Walburn wrote: > Zones Group, > > A colleague and I have been trying to find a definitive answer for a Zones > networking question as we're trying to solidify how we backup large Oracle > databases running inside of Zones. > > Basically the scenario is this: If I Initiate a client backup from the local > zone to the "storage node" software running in the global zone, and they > share their ethernet interface - no shared IP instance - does the backup > traffic hit the physical wire? Or, does it stay inside the kernel/memory... > thereby achieving a very fast in memory transfer to the backup server running > in the global zone? > > Thanks so much, I really appreciate the help! > > -Matthew The traffic must not go out the ethernet interface if using the single interface you mentioned. Otherwise it would be an spec violation as ethernet frames going to the switch can't be sent directly back to the system. You mention not using shared IP, yet only one interface. I mention that since if you were to configure VNICs on a single physical interface, the same rules apply, even if the zones are configured with exclusive IP Instances. The VNIC 'switch' will not have frames leave the system. Actually, the more I read the question, the more confused I am. Are the zones on the same IP subnet? Are you using one NIC *and* using exclusive IP Instances (ip-type=exclusive)? If not using VNICs (SX-CE 105) are you using VLANs? Steffen PS. for some scenarios with VNICs or VLANs, see blogs.sun.com/stw/ ___ zones-discuss mailing list zones-discuss@opensolaris.org
Re: [zones-discuss] Zone Networking and Backups
For ip-type=shared the communication stays in the system. O(memory speed). Very fast with little IP processing. This is the default. For ip-type=exclusive the communication will have to go out the interface assigned to the nonglobal zone and routed externally to an interface on the global zone. It is visible and the transfer is O(slowest interface). Bob Sent from my iPhone On Jan 23, 2009, at 1:41 PM, Matt Walburn wrote: > Zones Group, > > A colleague and I have been trying to find a definitive answer for a > Zones networking question as we're trying to solidify how we backup > large Oracle databases running inside of Zones. > > Basically the scenario is this: If I Initiate a client backup from > the local zone to the "storage node" software running in the global > zone, and they share their ethernet interface - no shared IP > instance - does the backup traffic hit the physical wire? Or, does > it stay inside the kernel/memory... thereby achieving a very fast in > memory transfer to the backup server running in the global zone? > > Thanks so much, I really appreciate the help! > > -Matthew > -- > This message posted from opensolaris.org > ___ > zones-discuss mailing list > zones-discuss@opensolaris.org ___ zones-discuss mailing list zones-discuss@opensolaris.org
[zones-discuss] Zone Networking and Backups
Zones Group, A colleague and I have been trying to find a definitive answer for a Zones networking question as we're trying to solidify how we backup large Oracle databases running inside of Zones. Basically the scenario is this: If I Initiate a client backup from the local zone to the "storage node" software running in the global zone, and they share their ethernet interface - no shared IP instance - does the backup traffic hit the physical wire? Or, does it stay inside the kernel/memory... thereby achieving a very fast in memory transfer to the backup server running in the global zone? Thanks so much, I really appreciate the help! -Matthew -- This message posted from opensolaris.org ___ zones-discuss mailing list zones-discuss@opensolaris.org
