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Tue, 06 Jan 2015 16:29:21 -0800 (PST) From: Tom Haynes X-Google-Original-From: Tom Haynes To: Trond Myklebust Cc: Linux NFS Mailing list Subject: [PATCH v3 10/49] nfs41: create NFSv3 DS connection if specified Date: Tue, 6 Jan 2015 16:28:15 -0800 Message-Id: <1420590534-84063-11-git-send-email-loghyr@primarydata.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1420590534-84063-1-git-send-email-loghyr@primarydata.com> References: <1420590534-84063-1-git-send-email-loghyr@primarydata.com> Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Peng Tao Signed-off-by: Peng Tao Signed-off-by: Tom Haynes --- fs/nfs/pnfs_dev.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 51 insertions(+), 3 deletions(-) diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index 56f5c16..655333d 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -615,7 +615,44 @@ static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds) wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING); } -static int _nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, +static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv, + struct nfs4_pnfs_ds *ds, + unsigned int timeo, + unsigned int retrans, + rpc_authflavor_t au_flavor) +{ + struct nfs_client *clp = ERR_PTR(-EIO); + struct nfs4_pnfs_ds_addr *da; + int status = 0; + + dprintk("--> %s DS %s au_flavor %d\n", __func__, + ds->ds_remotestr, au_flavor); + + list_for_each_entry(da, &ds->ds_addrs, da_node) { + dprintk("%s: DS %s: trying address %s\n", + __func__, ds->ds_remotestr, da->da_remotestr); + + clp = nfs3_set_ds_client(mds_srv->nfs_client, + (struct sockaddr *)&da->da_addr, + da->da_addrlen, IPPROTO_TCP, + timeo, retrans, au_flavor); + if (!IS_ERR(clp)) + break; + } + + if (IS_ERR(clp)) { + status = PTR_ERR(clp); + goto out; + } + + smp_wmb(); + ds->ds_clp = clp; + dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr); +out: + return status; +} + +static int _nfs4_pnfs_v4_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, unsigned int timeo, unsigned int retrans, @@ -674,8 +711,19 @@ void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) { int err = 0; - err = _nfs4_pnfs_ds_connect(mds_srv, ds, timeo, retrans, - minor_version, au_flavor); + if (version == 3) { + err = _nfs4_pnfs_v3_ds_connect(mds_srv, ds, timeo, + retrans, au_flavor); + } else if (version == 4) { + err = _nfs4_pnfs_v4_ds_connect(mds_srv, ds, timeo, + retrans, minor_version, + au_flavor); + } else { + dprintk("%s: unsupported DS version %d\n", __func__, + version); + err = -EPROTONOSUPPORT; + } + if (err) nfs4_mark_deviceid_unavailable(devid); nfs4_clear_ds_conn_bit(ds);