votequorum_qdevice_master_wins(3) [centos man page]

VOTEQUORUM_QDEVICE_MASTER_WINS(3)		    Corosync Cluster Engine Programmer's Manual 		 VOTEQUORUM_QDEVICE_MASTER_WINS(3)

NAME

       votequorum_qdevice_master_wins - Sets or clears quorum device master_wins flag

SYNOPSIS

       #include <corosync/votequorum.h>

       int votequorum_qdevice_master_wins(votequorum_handle_t handle const char name, unsigned int allow);

DESCRIPTION

       The votequorum_qdevice_master_wins informs votequorum whether or not the currently registered qdevice subsystem supports 'master_wins' mode
       (default 0).  This mode allows the qdevice to effectively take over the quorum calculations of votequorum. Any node with an active  qdevice
       that  also  has	master_wins set becomes quorate regardless of the node votes of the cluster. It is left up to the qdevice subsystem itself
       (not part of votequorum) to communicate across the nodes or otherwise provide some system of deciding which nodes will be part of the  quo-
       rate cluster, if any. eg They may be the set of nodes that has access to a quorum disk.
       name The name of the currently registered quorum device on this node. This must match the existing name known to votequorum.
       allow 0 (the default) means that master_wins is not active on this node. 1 means that master_wins is active on this node.

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call inturrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to completed the requested task

SEE ALSO

       votequorum_overview(8),	 votequorum_initialize(3),   votequorum_finalize(3),   votequorum_getinfo(3),  votequorum_trackstart(3),  votequo-
       rum_trackstop(3), votequorum_fd_get(3),	votequorum_dispatch(3),  votequorum_context_set(3),  votequorum_context_get(3),  votequorum_setex-
       pected(3), votequorum_setvotes(3), votequorum_qdevice_register(3), votequorum_qdevice_poll(3), votequorum_qdevice_update(3),

corosync Man Page						    2014-06-10					 VOTEQUORUM_QDEVICE_MASTER_WINS(3)

QUORUM_DISPATCH(3)				    Corosync Cluster Engine Programmer's Manual 				QUORUM_DISPATCH(3)

NAME

       quorum_dispatch - Dispatches callbacks from the quorum service

SYNOPSIS

       #include <corosync/quorum.h>

       int quorum_dispatch(quorum_handle_t handle, cs_dispatch_flags_t *dispatch_types);

DESCRIPTION

       The quorum_dispatch function is used to dispatch configuration changes.

       Each  application may have several connections to the quorum API.  Each	application uses the handle argument to uniquely identify the con-
       nection.

       The dispatch_types argument is used to identify the type of dispatch to execute.  The possible types are defined by the structure:

       typedef enum {
	       CS_DISPATCH_ONE = 1,
	       CS_DISPATCH_ALL = 2,
	       CS_DISPATCH_BLOCKING = 3,
	       CS_DISPATCH_ONE_NONBLOCKING = 4
       } cs_dispatch_flags_t;

       The dispatch values have the following meanings:

       CS_DISPATCH_ONE
	      Dispatch at least one callback, blocking until the callback is dispatched.

       CS_DISPATCH_ALL
	      Dispatch all waiting callbacks without blocking to wait for any callbacks.

       CS_DISPATCH_BLOCKING
	      Dispatch all callbacks blocking indefinitely.  This is used in a threaded program where a thread is created,  and  then  quorum_dis-
	      patch() is called immediately from the created thread to execute callbacks.

       CS_DISPATCH_ONE_NONBLOCKING
	      Dispatch at most one callback. If there is no pending callback, CS_ERR_TRY_AGAIN is returned.

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       CS_ERR_TRY_AGAIN Resource temporarily unavailable

       CS_ERR_INVALID_PARAM Invalid argument

       CS_ERR_ACCESS Permission denied

       CS_ERR_LIBRARY The connection failed

       CS_ERR_INTERRUPT System call inturrupted by a signal

       CS_ERR_NOT_SUPPORTED The requested protocol/functuality not supported

       CS_ERR_MESSAGE_ERROR Incorrect auth message received

       CS_ERR_NO_MEMORY Not enough memory to completed the requested task

SEE ALSO

       quorum_overview(8),   quorum_initialize(3),   quorum_finalize(3),  quorum_getquorate(3),  quorum_trackstart(3),	quorum_trackstop(3),  quo-
       rum_fd_get(3), quorum_context_set(3), quorum_context_get(3)

corosync Man Page						    2014-06-10							QUORUM_DISPATCH(3)