From: andros@netapp.com
To: trond.myklebust@netapp.com
Cc: linux-nfs@vger.kernel.org, Andy Adamson <andros@netapp.com>
Subject: [PATCH pNFS wave 3 Version 3 07/18] NFSv4.1: add MDS mount DS only check
Date: Mon, 28 Feb 2011 20:34:12 -0500 [thread overview]
Message-ID: <1298943263-2886-8-git-send-email-andros@netapp.com> (raw)
In-Reply-To: <1298943263-2886-7-git-send-email-andros@netapp.com>
From: Andy Adamson <andros@netapp.com>
The DS only role cannot be used to mount.
Signed-off-by: Andy Adamson <andros@netapp.com>
---
fs/nfs/client.c | 4 ++++
fs/nfs/nfs4_fs.h | 13 +++++++++++++
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 280d41f..d5c5bdf 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -1453,6 +1453,10 @@ static int nfs4_server_common_setup(struct nfs_server *server,
BUG_ON(!server->nfs_client->rpc_ops);
BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
+ /* data servers support only a subset of NFSv4.1 */
+ if (is_ds_only_client(server->nfs_client))
+ return -EPROTONOSUPPORT;
+
fattr = nfs_alloc_fattr();
if (fattr == NULL)
return -ENOMEM;
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 7a74740..5d84642 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -259,6 +259,13 @@ extern int nfs4_proc_destroy_session(struct nfs4_session *);
extern int nfs4_init_session(struct nfs_server *server);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
+
+static inline bool
+is_ds_only_client(struct nfs_client *clp)
+{
+ return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) ==
+ EXCHGID4_FLAG_USE_PNFS_DS;
+}
#else /* CONFIG_NFS_v4_1 */
static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
{
@@ -276,6 +283,12 @@ static inline int nfs4_init_session(struct nfs_server *server)
{
return 0;
}
+
+static inline bool
+is_ds_only_client(struct nfs_client *clp)
+{
+ return false;
+}
#endif /* CONFIG_NFS_V4_1 */
extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[];
--
1.6.6
next prev parent reply other threads:[~2011-03-01 17:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-01 1:34 [PATCH pNFS wave 3 Version 3 0/18] pNFS wave 3 submission Version 3 andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 01/18] NFSv4: remove CONFIG_NFS_V4 from nfs_read_data andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 02/18] NFSv4.1: put_layout_hdr can remove nfsi->layout andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 03/18] NFS move nfs_client initialization into nfs_get_client andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 04/18] NFSv4.1: send zero stateid seqid on v4.1 i/o andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 05/18] NFSv4.1: new flag for state renewal check andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 06/18] NFSv4.1: new flag for lease time check andros
2011-03-01 1:34 ` andros [this message]
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 08/18] NFSv4.1: lseg refcounting andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 09/18] NFSv4.1: coelesce across layout stripes andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 10/18] NFSv4.1: shift pnfs_update_layout locations andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 11/18] NFSv4.1: generic read andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 12/18] NFSv4.1: data server connection andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 13/18] NFSv4.1: filelayout i/o helpers andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 14/18] NFSv4.1: filelayout read andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 15/18] NFSv4.1: filelayout async error handler andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 16/18] NFSv4.1 move deviceid cache to filelayout driver andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 17/18] NFSv4.1: turn off pNFS on ds connection failure andros
2011-03-01 1:34 ` [PATCH pNFS wave 3 Version 3 18/18] NFSv4.1: lseg documentation andros
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