VOTEQUORUM_QDEVICE_POLL(3) Corosync Cluster Engine Programmer's Manual
NAME
votequorum_qdevice_poll - Tells votequorum the result of the quorum
device poll
SYNOPSIS
#include <corosync/votequorum.h> int votequorum_qdevice_poll(votequorum_handle_t handle, const char * name, unsigned int cast_vote, votequorum_ring_id_t ring_id);DESCRIPTION
The
votequorum_qdevice_poll is called by the quorum device subsystem
(not provided as part of votequorum) to tell the voting system if the
quorum device is present/active or not. If
cast_vote is 1 then the
votes for the device are included in the quorum calculation,
otherwise not. Current
ring_id must be set (one get in
votequorum_notification_fn callback) otherwise poll is ignored. This
routine should be called at regular intervals to ensure that the
device status is always known to votequorum. If
votequorum_qdevice_poll is not called for (default) 10 seconds (or 30
seconds for sync phase) then the device will be deemed to be dead and
its votes removed from the cluster. This does not unregister the
device. The default poll time can be changed by setting the cmap
variable
quorum.device.timeout for normal operation or
quorum.device.sync_timeout for synchronization phase.
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 interrupted by a signal
CS_ERR_NOT_SUPPORTED The requested protocol/functionality not
supported
CS_ERR_MESSAGE_ERROR Incorrect auth message received
CS_ERR_NO_MEMORY Not enough memory to complete the requested task
SEE ALSO
votequorum_overview(8),
votequorum_initialize(3),
votequorum_finalize(3),
votequorum_getinfo(3),
votequorum_trackstart(3),
votequorum_trackstop(3),
votequorum_fd_get(3),
votequorum_dispatch(3),
votequorum_context_set(3),
votequorum_context_get(3),
votequorum_setexpected(3),
votequorum_setvotes(3),
votequorum_qdevice_register(3),
votequorum_qdevice_unregister(3),
votequorum_qdevice_update(3),
votequorum_qdevice_master_wins(3),
corosync Man Page 2023-07-18 VOTEQUORUM_QDEVICE_POLL(3)
