[pnfs] Server Sessions

[Iyer, Rahul]

> -----Original Message-----
> From: William A. (Andy) Adamson [mailto:andros at citi.umich.edu] 
> Sent: Monday, January 29, 2007 2:08 PM
> To: Iyer, Rahul
> Cc: pnfs at linux-nfs.org
> Subject: Server Sessions
> 
> hi rahul
> 
> i'm looking at the data servers use of sessions.
> 
> do you have any code to create a 'current_session' in 
> fs/nfsd/nfs4proc.c?

No, I have not. But it should be fairly simple... Much like the putfh
code. nfsd4_sequence() will give you an idea of how to get a nfs4_client
struct given a sessionid.

> have you written the clean-up code for __nfs4_state_shutdown? 
Nothing explicit. Because exchange_id and create_session are similar in
state processing to setclientid and setclientid_confirm. The additional
part for sessions is that there is an extra hash table. I do not do any
other "state allocation" as there isn't any seqid checking. The cleanup
for the hashtable stuff is in expire_client. So, I do not believe
anything extra is required in __nfs4_state_shutdown() as it calls
expire_client().

Regards
Rahul