Re: [PATCH 0/7] NFSv4.1+ support for session trunking discovery

[Wang Yugui <wangyugui@e16-tech.com>]

Hi,

We need a option to control active-active or active-standby mode?
1) active-active    will get better performance when 10GbE/25GbE ports?
2) active-standby will get better performance when 100GbE/40GbE ports?

Best Regards
Wang Yugui (wangyugui@e16-tech.com)
2021/12/11

> From: Olga Kornievskaia <kolga@netapp.com>
> 
> This patch series adds session trunking discovery and setup. When a
> client discovers a new file system in addition to probing for
> existing attributes, it also sends a GETATTR asking for an fs_location
> attribute. If it receives a non-zero length reply, it will iterate
> thru the response and, for each server location, it will establish a
> connection (of the same type as the existing RPC transport), send
> an EXCHANGE_ID, and test for session trunking. If the trunking test
> succeeds, the transport is added to an existing set of transports
> for this server. 
> 
> Olga Kornievskaia (7):
>   NFSv4 remove zero number of fs_locations entries error check
>   NFSv4 store server support for fs_location attribute
>   NFSv4.1 query for fs_location attr on a new file system
>   NFSv4 expose nfs_parse_server_name function
>   NFSv4 handle port presence in fs_location server string
>   SUNRPC allow for unspecified transport time in rpc_clnt_add_xprt
>   NFSv4.1 test and add 4.1 trunking transport
> 
>  fs/nfs/client.c           |   7 ++
>  fs/nfs/nfs4_fs.h          |  12 ++--
>  fs/nfs/nfs4namespace.c    |  19 ++++--
>  fs/nfs/nfs4proc.c         | 131 +++++++++++++++++++++++++++++++++++---
>  fs/nfs/nfs4state.c        |   6 +-
>  fs/nfs/nfs4xdr.c          |   2 -
>  include/linux/nfs_fs_sb.h |   2 +-
>  include/linux/nfs_xdr.h   |   1 +
>  net/sunrpc/clnt.c         |   5 +-
>  9 files changed, 158 insertions(+), 27 deletions(-)
> 
> -- 
> 2.27.0