NFS/pNFS: Set the connect timeout for the pNFS flexfiles driver

Ensure that the connect timeout for the pNFS flexfiles driver is of the
same order as the I/O timeout, so that we can fail over quickly when
trying to read from a data server that is down.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

Author: Trond Myklebust

fs/nfs/client.c

@@ -517,6 +517,8 @@ int nfs_create_rpc_client(struct nfs_client *clp,
 		.authflavor	= flavor,
 		.cred		= cl_init->cred,
 		.xprtsec	= cl_init->xprtsec,
+		.connect_timeout = cl_init->connect_timeout,
+		.reconnect_timeout = cl_init->reconnect_timeout,
 	};
 
 	if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags))

fs/nfs/internal.h

@@ -82,6 +82,8 @@ struct nfs_client_initdata {
 	const struct rpc_timeout *timeparms;
 	const struct cred *cred;
 	struct xprtsec_parms xprtsec;
+	unsigned long connect_timeout;
+	unsigned long reconnect_timeout;
 };
 
 /*

fs/nfs/nfs3client.c

@@ -86,6 +86,7 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
 		int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
 {
 	struct rpc_timeout ds_timeout;
+	unsigned long connect_timeout = ds_timeo * (ds_retrans + 1) * HZ / 10;
 	struct nfs_client *mds_clp = mds_srv->nfs_client;
 	struct nfs_client_initdata cl_init = {
 		.addr = ds_addr,
@@ -98,6 +99,8 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
 		.timeparms = &ds_timeout,
 		.cred = mds_srv->cred,
 		.xprtsec = mds_clp->cl_xprtsec,
+		.connect_timeout = connect_timeout,
+		.reconnect_timeout = connect_timeout,
 	};
 	struct nfs_client *clp;
 	char buf[INET6_ADDRSTRLEN + 1];

fs/nfs/pnfs_nfs.c

@@ -852,6 +852,7 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv,
 {
 	struct nfs_client *clp = ERR_PTR(-EIO);
 	struct nfs4_pnfs_ds_addr *da;
+	unsigned long connect_timeout = timeo * (retrans + 1) * HZ / 10;
 	int status = 0;
 
 	dprintk("--> %s DS %s\n", __func__, ds->ds_remotestr);
@@ -870,6 +871,8 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv,
 				.dstaddr = (struct sockaddr *)&da->da_addr,
 				.addrlen = da->da_addrlen,
 				.servername = clp->cl_hostname,
+				.connect_timeout = connect_timeout,
+				.reconnect_timeout = connect_timeout,
 			};
 
 			if (da->da_transport != clp->cl_proto)