NAME¶
votequorum_trackstart - Enable callbacks notification.
SYNOPSIS¶
#include <corosync/votequorum.h>
int votequorum_trackstart(votequorum_handle_t *handle, uint64_t
context, unsigned int flags);
DESCRIPTION¶
The
votequorum_trackstart function is used to enable callbacks
notification from the votequorum API.
Every time the voting configuration changes (eg a node joins or leave the
cluster) or the quorum status change or the expected votes changes, the
notification is queued.
The notification is dispatched via
votequorum_dispatch() function that
will execute the callback.
The
context option allows one to set a tracking context.
The
flags argument is defined by one or more of the following values and
values can be bitwise-or'd
#define CS_TRACK_CURRENT 0x01
#define CS_TRACK_CHANGES 0x02
#define CS_TRACK_CHANGES_ONLY 0x04
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_trackstop(3),
votequorum_fd_get(3),
votequorum_dispatch(3),
votequorum_context_set(3),
votequorum_context_get(3),
votequorum_setexpected(3),
votequorum_setvotes(3)
