[Cluster-devel] Re: [NFS] [PATCH 3/4 Revised] NLM - kernel lockd-statd changes
Wendy Cheng
wcheng at redhat.com
Tue Apr 10 18:16:59 UTC 2007
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
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