104 lines
4.3 KiB
C
104 lines
4.3 KiB
C
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/****************************************************************
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* *
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* Copyright 2006, 2010 Fidelity Information Services, Inc.*
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "gtm_time.h"
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#include "gtm_fcntl.h"
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#include "gtm_unistd.h"
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#include "gtm_inet.h"
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#include "gtm_string.h"
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#include <errno.h>
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#ifdef VMS
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#include <descrip.h> /* Required for gtmsource.h */
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#endif
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#include "gdsroot.h"
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#include "gdsblk.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsbt.h"
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#include "gdsfhead.h"
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#include "filestruct.h"
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#include "repl_msg.h"
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#include "gtmsource.h"
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#include "repl_dbg.h"
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#include "gtm_stdio.h"
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#include "repl_shutdcode.h"
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#include "repl_sem.h"
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#include "repl_log.h"
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GBLREF jnlpool_addrs jnlpool;
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GBLREF gtmsource_options_t gtmsource_options;
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GBLREF boolean_t holds_sem[NUM_SEM_SETS][NUM_SRC_SEMS];
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int gtmsource_mode_change(int to_mode)
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{
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uint4 savepid;
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int exit_status;
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int status, detach_status, remove_status;
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sgmnt_addrs *repl_csa;
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assert(holds_sem[SOURCE][JNL_POOL_ACCESS_SEM]);
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repl_log(stdout, TRUE, TRUE, "Initiating %s operation on source server pid [%d] for secondary instance [%s]\n",
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(GTMSOURCE_MODE_ACTIVE == to_mode) ? "ACTIVATE" : "DEACTIVATE",
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jnlpool.gtmsource_local->gtmsource_pid, jnlpool.gtmsource_local->secondary_instname);
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if (jnlpool.gtmsource_local->mode == to_mode)
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{
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repl_log(stderr, FALSE, TRUE, "Source Server already %s, not changing mode\n",
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(to_mode == GTMSOURCE_MODE_ACTIVE) ? "ACTIVE" : "PASSIVE");
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return (ABNORMAL_SHUTDOWN);
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}
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assert(ROOTPRIMARY_UNSPECIFIED != gtmsource_options.rootprimary);
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if ((GTMSOURCE_MODE_ACTIVE == to_mode)
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&& (ROOTPRIMARY_SPECIFIED == gtmsource_options.rootprimary) && jnlpool.jnlpool_ctl->upd_disabled)
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{ /* ACTIVATE is specified with ROOTPRIMARY on a journal pool that was created with PROPAGATEPRIMARY.
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* This is a case of transition from propagating primary to root primary. Enable updates in this journal pool
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* and append a triple to the replication instance file. The function "gtmsource_rootprimary_init" does just that.
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*/
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gtmsource_rootprimary_init(jnlpool.jnlpool_ctl->jnl_seqno);
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}
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DEBUG_ONLY(repl_csa = &FILE_INFO(jnlpool.jnlpool_dummy_reg)->s_addrs;)
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assert(!repl_csa->hold_onto_crit); /* so it is ok to invoke "grab_lock" and "rel_lock" unconditionally */
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grab_lock(jnlpool.jnlpool_dummy_reg);
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/* Any ACTIVATE/DEACTIVATE versus ROOTPRIMARY/PROPAGATE incompatibilities have already been checked in the
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* function "jnlpool_init" so go ahead and document the impending activation/deactivation and return.
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* This flag will be eventually detected by the concurrently running source server which will then change mode.
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*/
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if (GTMSOURCE_MODE_ACTIVE == to_mode)
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{
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jnlpool.gtmsource_local->secondary_port = gtmsource_options.secondary_port;
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jnlpool.gtmsource_local->secondary_inet_addr = gtmsource_options.sec_inet_addr;
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STRCPY(jnlpool.gtmsource_local->secondary_host, gtmsource_options.secondary_host);
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memcpy(&jnlpool.gtmsource_local->connect_parms[0], >msource_options.connect_parms[0],
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SIZEOF(gtmsource_options.connect_parms));
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}
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if ('\0' != gtmsource_options.log_file[0] && 0 != STRCMP(jnlpool.gtmsource_local->log_file, gtmsource_options.log_file))
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{
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repl_log(stdout, FALSE, TRUE, "Signaling change in log file from %s to %s\n",
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jnlpool.gtmsource_local->log_file, gtmsource_options.log_file);
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STRCPY(jnlpool.gtmsource_local->log_file, gtmsource_options.log_file);
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jnlpool.gtmsource_local->changelog |= REPLIC_CHANGE_LOGFILE;
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}
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if (0 != gtmsource_options.src_log_interval && jnlpool.gtmsource_local->log_interval != gtmsource_options.src_log_interval)
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{
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repl_log(stdout, FALSE, TRUE, "Signaling change in log interval from %u to %u\n",
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jnlpool.gtmsource_local->log_interval, gtmsource_options.src_log_interval);
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jnlpool.gtmsource_local->log_interval = gtmsource_options.src_log_interval;
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jnlpool.gtmsource_local->changelog |= REPLIC_CHANGE_LOGINTERVAL;
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}
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jnlpool.gtmsource_local->mode = to_mode;
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rel_lock(jnlpool.jnlpool_dummy_reg);
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REPL_DPRINT1("Change mode signalled\n");
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return (NORMAL_SHUTDOWN);
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}
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