The xfnts_update Method
The RGM calls the Update method to notify a running resource that its properties have been changed. The RGM invokes Update after an administrative action succeeds in setting properties of a resource or its group.
Example C-8 xfnts_update.c
#pragma ident "@(#)xfnts_update.c 1.10 01/01/18 SMI"
/*
* Copyright (c) 1998-2003 by Sun Microsystems, Inc.
* All rights reserved.
*
* xfnts_update.c - Update method for HA-XFS
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <rgm/libdsdev.h>
/*
* Some of the resource properties might have been updated. All
such
* updatable properties are related to the fault monitor. Hence,
just
* restarting the monitor should be enough.
*/
int
main(int argc, char *argv[])
{
scds_handle_t scds_handle;
scha_err_t result;
/* Process the arguments passed by RGM and initialize syslog */
if (scds_initialize(&scds_handle, argc, argv) != SCHA_ERR_NOERR)
{
scds_syslog(LOG_ERR, "Failed to initialize the handle.");
return (1);
}
/*
* check if the Fault monitor is already running and if so stop and
* restart it. The second parameter to scds_pmf_restart_fm() uniquely
* identifies the instance of the fault monitor that needs to be
* restarted.
*/
scds_syslog(LOG_INFO, "Restarting the fault monitor.");
result = scds_pmf_restart_fm(scds_handle, 0);
if (result != SCHA_ERR_NOERR) {
scds_syslog(LOG_ERR,
"Failed to restart fault monitor.");
/* Free up all the memory allocated by scds_initialize */
scds_close(&scds_handle);
return (1);
}
scds_syslog(LOG_INFO,
"Completed successfully.");
/* Free up all the memory allocated by scds_initialize */
scds_close(&scds_handle);
return (0);
}
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The xfnts_validate Method Code Listing
This method verifies the existence of the directory pointed to by the Confdir_list property. The RGM calls this method when the data service is created and when data service properties are updated by the cluster administrator. The Monitor_check method calls this method whenever the fault monitor fails the data service over to a new node.
Example C-9 xfnts_validate.c
/*
* Copyright (c) 1998-2003 by Sun Microsystems, Inc.
* All rights reserved.
*
* xfnts_validate.c - validate method for HA-XFS
*/
#pragma ident "@(#)xfnts_validate.c 1.9 01/01/18 SMI"
#include <rgm/libdsdev.h>
#include "xfnts.h"
/*
* Check to make sure that the properties have been set properly.
*/
int
main(int argc, char *argv[])
{
scds_handle_t scds_handle;
int rc;
/* Process arguments passed by RGM and initialize syslog */
if (scds_initialize(&scds_handle, argc, argv) != SCHA_ERR_NOERR)
{
scds_syslog(LOG_ERR, "Failed to initialize the handle.");
return (1);
}
rc = svc_validate(scds_handle);
/* Free up all the memory allocated by scds_initialize */
scds_close(&scds_handle);
/* Return the result of validate method */
return (rc);
}
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