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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)

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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)
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