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| author | Chuck Lever | 2013-10-17 20:13:35 +0200 |
|---|---|---|
| committer | Trond Myklebust | 2013-10-28 20:30:21 +0100 |
| commit | b7f7a66e420a9f3ec82a5124720013cee317e73a (patch) | |
| tree | be7da5ca8b2bf98e2e91237503101eb77d389d87 /fs/nfs/nfs4_fs.h | |
| parent | NFS: Add method to detect whether an FSID is still on the server (diff) | |
| download | kernel-qcow2-linux-b7f7a66e420a9f3ec82a5124720013cee317e73a.tar.gz kernel-qcow2-linux-b7f7a66e420a9f3ec82a5124720013cee317e73a.tar.xz kernel-qcow2-linux-b7f7a66e420a9f3ec82a5124720013cee317e73a.zip | |
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.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 2f0f8c216441..210e44ed1d2a 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 **); |