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authorChuck Lever <chuck.lever@oracle.com>2013-10-17 14:13:35 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-10-28 15:30:21 -0400
commitb7f7a66e420a9f3ec82a5124720013cee317e73a (patch)
treebe7da5ca8b2bf98e2e91237503101eb77d389d87 /fs/nfs/nfs4_fs.h
parent44c9993384e9311cd56acf6ead3baffab616ae50 (diff)
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NFS: Support NFS4ERR_LEASE_MOVED recovery in state manager
A migration on the FSID in play for the current NFS operation is reported via the error status code NFS4ERR_MOVED. "Lease moved" means that a migration has occurred on some other FSID than the one for the current operation. It's a signal that the client should take action immediately to handle a migration that it may not have noticed otherwise. This is so that the client's lease does not expire unnoticed on the destination server. In NFSv4.0, a moved lease is reported with the NFS4ERR_LEASE_MOVED error status code. To recover from NFS4ERR_LEASE_MOVED, check each FSID for that server to see if it is still present. Invoke nfs4_try_migration() if the FSID is no longer present on the server. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4_fs.h')
-rw-r--r--fs/nfs/nfs4_fs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 2f0f8c2..210e44e 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -30,6 +30,7 @@ enum nfs4_client_state {
NFS4CLNT_PURGE_STATE,
NFS4CLNT_BIND_CONN_TO_SESSION,
NFS4CLNT_MOVED,
+ NFS4CLNT_LEASE_MOVED,
};
#define NFS4_RENEW_TIMEOUT 0x01
@@ -425,6 +426,7 @@ extern void nfs4_schedule_state_manager(struct nfs_client *);
extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp);
extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *);
extern int nfs4_schedule_migration_recovery(const struct nfs_server *);
+extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *);
extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
extern void nfs41_handle_server_scope(struct nfs_client *,
struct nfs41_server_scope **);
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