NFSv4.1 data server timeo and retrans module parameters

Set the recovery parameters for data servers.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index 7e0be3e331d7..d4d2032c1992 100644
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -30,12 +30,16 @@
 
 #include <linux/nfs_fs.h>
 #include <linux/vmalloc.h>
+#include <linux/module.h>
 
 #include "internal.h"
 #include "nfs4filelayout.h"
 
 #define NFSDBG_FACILITY         NFSDBG_PNFS_LD
 
+static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO;
+static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS;
+
 /*
  * Data server cache
  *
@@ -165,8 +169,9 @@ nfs4_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds)
                         __func__, ds->ds_remotestr, da->da_remotestr);
 
                 clp = nfs4_set_ds_client(mds_srv->nfs_client,
-                                 (struct sockaddr *)&da->da_addr,
-                                 da->da_addrlen, IPPROTO_TCP);
+                                        (struct sockaddr *)&da->da_addr,
+                                        da->da_addrlen, IPPROTO_TCP,
+                                        dataserver_timeo, dataserver_retrans);
                 if (!IS_ERR(clp))
                         break;
         }
@@ -821,3 +826,12 @@ mark_dev_invalid:
         filelayout_mark_devid_invalid(devid);
         return NULL;
 }
+
+module_param(dataserver_retrans, uint, 0644);
+MODULE_PARM_DESC(dataserver_retrans, "The  number of times the NFSv4.1 client "
+                        "retries a request before it attempts further "
+                        " recovery  action.");
+module_param(dataserver_timeo, uint, 0644);
+MODULE_PARM_DESC(dataserver_timeo, "The time (in tenths of a second) the "
+                        "NFSv4.1  client  waits for a response from a "
+                        " data server before it retries an NFS request.");