How VM connects to physcial SAN storage?

asked 2013-09-11 03:59:29 -0500

I have a technical question about establishing a connection between VM and iSCSI IP SAN device in Grizzly Quantum environment.

My current deployment of Folsom (nova-network) is that, a VM is now connected with a physical SAN storage through iSCSI/Cisco switch with private IP (10.0.0.X) by VLAN tagging environment. It relies on hardware VLAN truck mode in Cisco Switch and it works fine

Now I’m going to switch to Grizzly with Quantum environment, all network environment will be relied on software/GRE connection. How does a VM connect to a physical SAN storage.

For example: • a running VM with private IP 192.168.1.10 • iSCSI SAN storage with private IP 192.168.0.12 • a Cisco Switch

Since each project can also create same subnet with 192.168.1.0, how the VM can specifically connect to the SAN storage without collusion to other project? Thank you so much!

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answered 2013-09-13 04:26:37 -0500

darragh-oreilly gravatar image

You mention GRE, so I presume you mean the OVS plugin for Quantum. This plugin also gives you "provider networks" which allows the provider to create Quantum networks that map onto physical VLANs using bridging. The provider can make these shared so tenants can boot instances on them, and security groups block inward access by default. I think these would be more suitable for iSCSI traffic than floating IPs which uses iptables/NAT.

Have you looked into Cinder? It may be easier than mapping iSCSI targets to the instances.

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Asked: 2013-09-11 03:59:29 -0500

Seen: 652 times

Last updated: Sep 13 '13