NAME

       quorum_trackstart - Enable callbacks notification.

SYNOPSIS

       #include <corosync/quorum.h>

       int quorum_trackstart(quorum_handle_t *handle, unsigned int flags);

DESCRIPTION

       The  quorum_trackstart  function  is used to enable callbacks notification from the quorum
       API.

       Every time the voting configuration changes (eg a node joins or leave the cluster) or  the
       quorum status change, the notification is queued.

       The  notification  is  dispatched  via  quorum_dispatch()  function  that will execute the
       callback.

       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 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

       quorum_overview(3),  quorum_initialize(3), quorum_model_initialize(3), quorum_finalize(3),
       quorum_getquorate(3),    quorum_trackstop(3),    quorum_fd_get(3),     quorum_dispatch(3),
       quorum_context_set(3), quorum_context_get(3)