pNFS: Allow multiple connections to the DS

If the user specifies -onconnect=<number> mount option, and the transport
protocol is TCP, then set up <number> connections to the pNFS data server
as well. The connections will all go to the same IP address.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
index fb0c425..148ceb7 100644 (file)
--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c
@@ -102,6 +102,9 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
                return ERR_PTR(-EINVAL);
        cl_init.hostname = buf;
 
+       if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP)
+               cl_init.nconnect = mds_clp->cl_nconnect;
+
        if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
                set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
 

diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 5c244c4..616393a 100644 (file)
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -944,6 +944,9 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv,
                return ERR_PTR(-EINVAL);
        cl_init.hostname = buf;
 
+       if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP)
+               cl_init.nconnect = mds_clp->cl_nconnect;
+
        if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
                __set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);