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NFS pnfs data server multipath session trunking

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Try all multipath addresses for a data server. The first address that
successfully connects and creates a session is the DS mount address.
All subsequent addresses are tested for session trunking and
added as aliases.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Andy Adamson
2016-09-09 09:22:29 -04:00
committed by Anna Schumaker
parent ad0849a7ef
commit 04fa2c6bb5
4 changed files with 86 additions and 14 deletions
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3
fs/nfs/internal.h
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@@ -572,6 +572,9 @@ extern int nfs40_walk_client_list(struct nfs_client *clp,
extern int nfs41_walk_client_list(struct nfs_client *clp,
struct nfs_client **result,
struct rpc_cred *cred);
extern int nfs4_test_session_trunk(struct rpc_clnt *,
struct rpc_xprt *,
void *);
static inline struct inode *nfs_igrab_and_active(struct inode *inode)
{