nfs41: check SEQUENCE status flag
the server can indicate a number of error conditions by setting the appropriate bits in the SEQUENCE operation. The client re-establishes state with the server when it receives one of those, with the action depending on the specific case. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Trond Myklebust
parent
2449ea2e19
commit
0629e370dd
@ -1173,6 +1173,28 @@ static int nfs4_reclaim_lease(struct nfs_client *clp)
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}
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#ifdef CONFIG_NFS_V4_1
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void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
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{
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if (!flags)
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return;
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else if (flags & SEQ4_STATUS_RESTART_RECLAIM_NEEDED) {
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set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
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nfs4_state_start_reclaim_reboot(clp);
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nfs4_schedule_state_recovery(clp);
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} else if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED |
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SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED |
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SEQ4_STATUS_ADMIN_STATE_REVOKED |
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SEQ4_STATUS_RECALLABLE_STATE_REVOKED |
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SEQ4_STATUS_LEASE_MOVED)) {
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set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
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nfs4_state_start_reclaim_nograce(clp);
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nfs4_schedule_state_recovery(clp);
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} else if (flags & (SEQ4_STATUS_CB_PATH_DOWN |
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SEQ4_STATUS_BACKCHANNEL_FAULT |
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SEQ4_STATUS_CB_PATH_DOWN_SESSION))
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nfs_expire_all_delegations(clp);
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}
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static void nfs4_session_recovery_handle_error(struct nfs_client *clp, int err)
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{
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switch (err) {
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