Looks like a good thing. Matt ----- Original Message ----- > From: andros@xxxxxxxxxx > To: "trond myklebust" <trond.myklebust@xxxxxxxxxxxxxxx> > Cc: linux-nfs@xxxxxxxxxxxxxxx, "Andy Adamson" <andros@xxxxxxxxxx> > Sent: Friday, February 5, 2016 4:08:32 PM > Subject: [PATCH RFC Version 1 0/6] Request for Comment: NFS4.1 Session Trunking > > From: Andy Adamson <andros@xxxxxxxxxx> > > This early patch set implements NFSv4.1 session trunking utilizing Tronds > multipath feature. This works against an upstream linux server with > two NICs as the EXCHANGE_ID info is the same for both NICs. > > Unmodified code will create a new nfs_client structure for the mount as > nfs_match_client fails due to the different full server address. > Tunking is detected by comparing the eir_server_owner.major/minor/scope > and the eir_server_impl_id to an existing mount. When trunking is detected, > the 2nd mount point uses the existing (not new) nfs_client for the new > mount point. > > When trunking is detected, this patch set adds an rpc_xprt for the new server > address to the exisiting mount, calls BIND_CONN_TO_SESSION, and destroys > the new clientid (no second mount). > > We then get round robin use of the two NICs off one mount point all > using a single session. > > > Is using mount a good way to setup NFSv4.1 session trunking? > > The first two patches fix issues with the multipath code. > > SUNRPC: allow rpc_xprt_switch_add_xprt to add xprts on the same net > This patch adds a flag to allow multipathing within the origial net. > I don't understand why this was not allowed, so I expect a different > solution for this issue. > > > Comments please. > > Thanks > > -->Andy > > Andy Adamson (6): > SUNRPC fix rpc_clnt_add_xprt setup return > SUNRPC fix rpc_clnt_xprt_iter_init infinite loop > SUNRPC: allow rpc_xprt_switch_add_xprt to add xprts on the same net > NFS session trunking support: add trunk xprt to nfs4.1 mount > NFS add callback_ops to nfs4_proc_bind_conn_to_session_callback > NFS schedule bind_conn_to_session for new NFSv4.1 transport > > fs/nfs/client.c | 2 ++ > fs/nfs/nfs4client.c | 29 +++++++++++++++++++++++++++-- > fs/nfs/nfs4proc.c | 10 ++++++++++ > include/linux/nfs_fs_sb.h | 1 + > include/linux/sunrpc/clnt.h | 1 + > include/linux/sunrpc/xprtmultipath.h | 6 +++++- > net/sunrpc/clnt.c | 20 +++++++++++++------- > net/sunrpc/xprtmultipath.c | 35 > +++++++++++++++++++++++++++++++++-- > 8 files changed, 92 insertions(+), 12 deletions(-) > > -- > 1.8.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- -- Matt Benjamin Red Hat, Inc. 315 West Huron Street, Suite 140A Ann Arbor, Michigan 48103 http://www.redhat.com/en/technologies/storage tel. 734-707-0660 fax. 734-769-8938 cel. 734-216-5309 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
