Unique machine identifier for nfsv4 client

[Rui Paulo]

On 30 Mar 2009, at 16:09, Rick Macklem wrote:

> An nfsv4 client needs a unique identifier that is persistent across
> reboots. My code currently uses the MAC address of the first net
> interface that it can find that has an Ethernet style MAC.
>
> There are two problems with this:
> 1 - If it can't find a net interface with a MAC, it falls back on a
>    randomly generated identifier, which changes when it is rebooted.
> 2 - The code that finds the MAC breaks layering (ie knows stuff about
>    the network code like struct ifnet) and only builds if
>    "options VIMAGE_GLOBALS" is set.

This doesn't answer the question, but have you thought about the  
possibility of the using the UUID that the system provides? A lot of  
new machines come with UUIDs.

--
Rui Paulo

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