votequorum_qdevice_register (3) - Linux Manuals

votequorum_qdevice_register: Registers a new quorum device


votequorum_qdevice_register - Registers a new quorum device


#include <corosync/votequorum.h>

int votequorum_qdevice_register(votequorum_handle_t handle, const char * name);


The votequorum_qdevice_register is used to register a new quorum device. A quorum device is an external way of adding votes to a small cluster. The quorum device is, in effect, a pseudo node in the cluster that provide votes based on some external device, usually a shared disk partition or perhaps a network router.
This call creates the device but does not mark it active. votequorum_qdevice_poll must be called for the votes to be included in the quorum calculation.
name is string containing an informative name for the quorum device. It is simply stored by votequorum and used in the display of corosync-quorumtool, it can be a maximum of 254 characters.
The number of votes contributed by the quorum device is already known to votequorum, it is set in cmap quorum.device.votes and not by the device.
Note that it is the responsibility of the quorum device subsystem (not provided as part of votequorum) to keep all nodes informed of the quorum device status.


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


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