[stgt] Having a callback to set a redirector target, port and reason.

[Chandra Seetharaman]

Hi Tomo,

Thinking along the direction of having redirector, think about the
following situation:

A node has multiple ip addresses (say 10.0.0.1, 10.0.1.1, 10.0.2.1 and
10.0.3.1) in different subnets and the "serving" tgtd is serving all
network ports(0:0:0:0).

When the redirector tgtd has to respond with a "RedirectAddress",
instead always redirecting to a static address (say 10.0.0.1), it can
give an external entity an opportunity to provide a RedirectAddress
which is on the same subnet as the initiator.

This can be done by providing multiple redirectAddress under a target,
but when we are talking about a cluster, failover, failback etc., it
will be handy to put that responsibility outside of stgt.

What do you think ?

regards,

chandra  

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