[Cluster-devel] Re: [NFS] [PATCH 3/4 Revised] NLM - kernel lockd-statd changes

[Wendy Cheng <wcheng@redhat.com>]

Olaf Kirch wrote:
> But - why do you need to record the address on which the request was
> received. at all? Don't you know beforehand on which IP addresses you
> will be servicing NFS requests, and which will need to be migrated?
>
>   

Sorry, somehow I missed this question ...

The intent is to avoid sending notifications to *all* clients.  The 
cluster user mode scripts will have to associate the floating IP(s) with 
fsid(s) and relies heavily on the information passed by rpc.statd's 
ha-callout program. My test ha-callout user mode program shows the 
following:

/mnt/lockd/ha-pg/hatest is invoked with 3 arguments.
    add-client
    192.168.24.146
    192.168.24.149
/mnt/lockd/ha-pg/hatest is invoked with 3 arguments.
    del-client
    192.168.24.145
    192.168.24.149

These info(s) will be used to construct the notification list when 
notification actually take places.

-- Wendy