With the advent of NFSv4 sessions in NFSv4.1 and following, a "lease moved" condition is reported differently than it is in NFSv4.0. NFSv4 minor version 0 servers return an error status code, NFS4ERR_LEASE_MOVED, to signal that a lease has moved. This error causes the whole compound operation to fail. Normal compounds against this server continue to fail until the client performs migration recovery on the migrated share. Minor version 1 and later servers assert a bit flag in the reply to a compound's SEQUENCE operation to signal LEASE_MOVED. This is not a fatal condition: operations against this server continue normally. The server asserts this flag until the client performs migration recovery on the migrated share. Note that servers MUST NOT return NFS4ERR_LEASE_MOVED to NFSv4 clients not using NFSv4.0. After the server asserts any of the sr_status_flags in the SEQUENCE operation in a typical compound, our client initiates standard lease recovery. For NFSv4.1+, a stand-alone SEQUENCE operation is performed to discover what recovery is needed. If SEQ4_STATUS_LEASE_MOVED is asserted in this stand-alone SEQUENCE operation, our client attempts to discover which FSIDs have been migrated, and then performs migration recovery on each. Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> --- fs/nfs/nfs4state.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 3fbce1f..6daa064 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -2230,9 +2230,10 @@ void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags) nfs41_handle_server_reboot(clp); if (flags & (SEQ4_STATUS_EXPIRED_ALL_STATE_REVOKED | SEQ4_STATUS_EXPIRED_SOME_STATE_REVOKED | - SEQ4_STATUS_ADMIN_STATE_REVOKED | - SEQ4_STATUS_LEASE_MOVED)) + SEQ4_STATUS_ADMIN_STATE_REVOKED)) nfs41_handle_state_revoked(clp); + if (flags & SEQ4_STATUS_LEASE_MOVED) + nfs4_schedule_lease_moved_recovery(clp); if (flags & SEQ4_STATUS_RECALLABLE_STATE_REVOKED) nfs41_handle_recallable_state_revoked(clp); if (flags & SEQ4_STATUS_BACKCHANNEL_FAULT) -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
