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|
/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2021 Red Hat, Inc.
* All rights reserved.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* archive.c - ldap ldbm back-end archive and restore entry points */
#include "back-ldbm.h"
#include "dblayer.h"
int
ldbm_temporary_close_all_instances(Slapi_PBlock *pb)
{
Object *inst_obj, *inst_obj2;
int32_t return_value = -1;
ldbm_instance *inst = NULL;
struct ldbminfo *li;
Slapi_Task *task;
slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &li);
slapi_pblock_get(pb, SLAPI_BACKEND_TASK, &task);
/* server is up -- mark all backends busy */
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
/* check if an import/restore is already ongoing... */
if (instance_set_busy(inst) != 0) {
slapi_log_err(SLAPI_LOG_WARNING,
"ldbm_temporary_close_all_instances", "'%s' is already in the middle of "
"another task and cannot be disturbed.\n",
inst->inst_name);
if (task) {
slapi_task_log_notice(task,
"Backend '%s' is already in the middle of "
"another task and cannot be disturbed.",
inst->inst_name);
}
/* painfully, we have to clear the BUSY flags on the
* backends we'd already marked...
*/
for (inst_obj2 = objset_first_obj(li->li_instance_set);
inst_obj2 && (inst_obj2 != inst_obj);
inst_obj2 = objset_next_obj(li->li_instance_set,
inst_obj2)) {
inst = (ldbm_instance *)object_get_data(inst_obj2);
instance_set_not_busy(inst);
}
if (inst_obj2 && inst_obj2 != inst_obj)
object_release(inst_obj2);
object_release(inst_obj);
goto out;
}
}
/* now take down ALL BACKENDS and changelog */
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
slapi_log_err(SLAPI_LOG_INFO, "ldbm_temporary_close_all_instances", "Bringing %s offline...\n",
inst->inst_name);
if (task) {
slapi_task_log_notice(task, "Bringing %s offline...",
inst->inst_name);
}
slapi_mtn_be_disable(inst->inst_be);
cache_clear(&inst->inst_cache, CACHE_TYPE_ENTRY);
if (entryrdn_get_switch()) {
cache_clear(&inst->inst_dncache, CACHE_TYPE_DN);
}
}
plugin_call_plugins(pb, SLAPI_PLUGIN_BE_PRE_CLOSE_FN);
/* now we know nobody's using any of the backend instances, so we
* can shutdown the dblayer -- this closes all instances too.
* Use DBLAYER_RESTORE_MODE to prevent loss of perfctr memory.
*/
dblayer_close(li, DBLAYER_RESTORE_MODE);
return_value = 0;
out:
return return_value;
}
int
ldbm_restart_temporary_closed_instances(Slapi_PBlock *pb)
{
Object *inst_obj;
int32_t ret;
int32_t return_value = -1;
ldbm_instance *inst = NULL;
struct ldbminfo *li;
Slapi_Task *task;
slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &li);
slapi_pblock_get(pb, SLAPI_BACKEND_TASK, &task);
if (0 != return_value) {
/*
* error case (607331)
* just to go back to the previous state if possible (preserve
* original error for now)
*/
if ((dblayer_start(li, DBLAYER_NORMAL_MODE))) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_restart_temporary_closed_instances", "Unable to to start database in [%s]\n",
li->li_directory);
if (task) {
slapi_task_log_notice(task, "Failed to start the database in %s",
li->li_directory);
}
}
}
/* bring all backends and changelog back online */
plugin_call_plugins(pb, SLAPI_PLUGIN_BE_POST_OPEN_FN);
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
ret = dblayer_instance_start(inst->inst_be, DBLAYER_NORMAL_MODE);
if (ret != 0) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_restart_temporary_closed_instances", "Unable to restart '%s'\n",
inst->inst_name);
if (task) {
slapi_task_log_notice(task, "Unable to restart '%s'", inst->inst_name);
}
} else {
slapi_mtn_be_enable(inst->inst_be);
instance_set_not_busy(inst);
}
}
return_value = 0;
return return_value;
}
int
ldbm_back_archive2ldbm(Slapi_PBlock *pb)
{
struct ldbminfo *li;
dblayer_private *priv = NULL;
Slapi_Task *task;
ldbm_instance *inst = NULL;
char *rawdirectory = NULL; /* -a <directory> */
char *directory = NULL; /* normalized */
int32_t return_value = -1;
int32_t task_flags = 0;
int32_t run_from_cmdline = 0;
slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &li);
slapi_pblock_get(pb, SLAPI_SEQ_VAL, &rawdirectory);
slapi_pblock_get(pb, SLAPI_BACKEND_TASK, &task);
slapi_pblock_get(pb, SLAPI_TASK_FLAGS, &task_flags);
li->li_flags = run_from_cmdline = (task_flags & SLAPI_TASK_RUNNING_FROM_COMMANDLINE);
if (!rawdirectory || !*rawdirectory) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_archive2ldbm", "No archive name\n");
return -1;
}
directory = rel2abspath(rawdirectory);
/* No ldbm be's exist until we process the config information. */
if (run_from_cmdline) {
mapping_tree_init();
if (dblayer_setup(li)) {
slapi_log_err(SLAPI_LOG_CRIT, "ldbm_back_archive2ldbm", "dblayer_setup failed\n");
slapi_ch_free_string(&directory);
return -1;
}
priv = (dblayer_private *)li->li_dblayer_private;
/* initialize a restore file to be able to detect a startup after restore */
if (priv->dblayer_restore_file_init_fn(li)) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_archive2ldbm", "Failed to write restore file.\n");
slapi_ch_free_string(&directory);
return -1;
}
}
if (!run_from_cmdline) {
return_value = ldbm_temporary_close_all_instances(pb);
if (0 != return_value) {
goto out;
}
}
/* tell the database to restore */
return_value = dblayer_restore(li, directory, task);
if (0 != return_value) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_archive2ldbm", "Failed to read backup file set. "
"Either the directory specified doesn't exist, "
"or it exists but doesn't contain a valid backup set, "
"or file permissions prevent the server reading "
"the backup set. error=%d (%s)\n",
return_value, dblayer_strerror(return_value));
if (task) {
slapi_task_log_notice(task, "Failed to read the backup file set from %s",
directory);
}
}
if (!run_from_cmdline) {
Object *inst_obj;
int32_t ret;
if (0 != return_value) {
/*
* error case (607331)
* just to go back to the previous state if possible (preserve
* original error for now)
*/
if (dblayer_start(li, DBLAYER_NORMAL_MODE)) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_archive2ldbm", "Unable to to start database in [%s]\n",
li->li_directory);
if (task) {
slapi_task_log_notice(task, "Failed to start the database in %s",
li->li_directory);
}
}
}
/* bring all backends and changelog back online */
plugin_call_plugins(pb, SLAPI_PLUGIN_BE_POST_OPEN_FN);
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
ret = dblayer_instance_start(inst->inst_be, DBLAYER_NORMAL_MODE);
if (ret != 0) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_archive2ldbm", "Unable to restart '%s'\n",
inst->inst_name);
if (task) {
slapi_task_log_notice(task, "Unable to restart '%s'", inst->inst_name);
}
} else {
slapi_mtn_be_enable(inst->inst_be);
instance_set_not_busy(inst);
}
}
}
out:
if (priv && run_from_cmdline && (0 == return_value)) {
priv->dblayer_restore_file_update_fn(li, directory);
}
slapi_ch_free_string(&directory);
return return_value;
}
int
ldbm_back_ldbm2archive(Slapi_PBlock *pb)
{
struct ldbminfo *li;
char *rawdirectory = NULL; /* -a <directory> */
char *directory = NULL; /* normalized */
char *dir_bak = NULL;
int return_value = -1;
int task_flags = 0;
int run_from_cmdline = 0;
Slapi_Task *task;
struct stat sbuf;
slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &li);
slapi_pblock_get(pb, SLAPI_SEQ_VAL, &rawdirectory);
slapi_pblock_get(pb, SLAPI_TASK_FLAGS, &task_flags);
li->li_flags = run_from_cmdline = (task_flags & SLAPI_TASK_RUNNING_FROM_COMMANDLINE);
slapi_pblock_get(pb, SLAPI_BACKEND_TASK, &task);
if (!rawdirectory || !*rawdirectory) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_ldbm2archive", "No archive name\n");
return -1;
}
/* start the database code up, do not attempt to perform recovery */
if (run_from_cmdline) {
/* No ldbm be's exist until we process the config information. */
/* copied here, need better solution */
/* initialize dblayer */
if (dblayer_setup(li)) {
slapi_log_err(SLAPI_LOG_CRIT, "ldbm_back_ldbm2archive", "dblayer_setup failed\n");
goto out;
}
mapping_tree_init();
if (0 != (return_value =
dblayer_start(li,
DBLAYER_ARCHIVE_MODE | DBLAYER_NO_DBTHREADS_MODE))) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_ldbm2archive", "Failed to init database\n");
if (task) {
slapi_task_log_notice(task, "Failed to init database");
}
return -1;
}
}
/* Initialize directory */
directory = rel2abspath(rawdirectory);
if (stat(directory, &sbuf) == 0) {
if (slapd_comp_path(directory, li->li_directory) == 0) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "Cannot archive to the db directory.\n");
if (task) {
slapi_task_log_notice(task,
"Cannot archive to the db directory.");
}
return_value = -1;
goto out;
}
dir_bak = slapi_ch_smprintf("%s.bak", directory);
slapi_log_err(SLAPI_LOG_INFO, "ldbm_back_ldbm2archive", "%s exists. Renaming to %s\n",
directory, dir_bak);
if (task) {
slapi_task_log_notice(task, "%s exists. Renaming to %s",
directory, dir_bak);
}
if (stat(dir_bak, &sbuf) == 0) {
return_value = ldbm_delete_dirs(dir_bak);
if (0 != return_value) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "%s exists and failed to delete it.\n",
dir_bak);
if (task) {
slapi_task_log_notice(task,
"%s exists and failed to delete it.", dir_bak);
}
return_value = -1;
goto out;
}
}
return_value = PR_Rename(directory, dir_bak);
if (return_value != PR_SUCCESS) {
PRErrorCode prerr = PR_GetError();
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "Failed to rename \"%s\" to \"%s\".\n",
directory, dir_bak);
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", SLAPI_COMPONENT_NAME_NSPR " error %d (%s)\n",
prerr, slapd_pr_strerror(prerr));
if (task) {
slapi_task_log_notice(task,
"Failed to rename \"%s\" to \"%s\".",
directory, dir_bak);
slapi_task_log_notice(task,
SLAPI_COMPONENT_NAME_NSPR " error %d (%s)",
prerr, slapd_pr_strerror(prerr));
}
return_value = -1;
goto out;
}
}
if (0 != MKDIR(directory, SLAPD_DEFAULT_DIR_MODE) && EEXIST != errno) {
const char *msg = dblayer_strerror(errno);
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "mkdir(%s) failed; errno %i (%s)\n",
directory, errno, msg ? msg : "unknown");
if (task) {
slapi_task_log_notice(task, "mkdir(%s) failed; errno %i (%s)",
directory, errno, msg ? msg : "unknown");
}
return_value = -1;
goto err;
}
/* to avoid conflict w/ import, do this check for commandline, as well */
{
Object *inst_obj, *inst_obj2;
ldbm_instance *inst = NULL;
/* server is up -- mark all backends busy */
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
/* check if an import/restore is already ongoing... */
if (instance_set_busy(inst) != 0 || dblayer_in_import(inst) != 0) {
slapi_log_err(SLAPI_LOG_WARNING,
"ldbm_back_ldbm2archive", "Backend '%s' is already in the middle of "
"another task and cannot be disturbed.\n",
inst->inst_name);
if (task) {
slapi_task_log_notice(task,
"Backend '%s' is already in the middle of "
"another task and cannot be disturbed.",
inst->inst_name);
}
/* painfully, we have to clear the BUSY flags on the
* backends we'd already marked...
*/
for (inst_obj2 = objset_first_obj(li->li_instance_set);
inst_obj2 && (inst_obj2 != inst_obj);
inst_obj2 = objset_next_obj(li->li_instance_set,
inst_obj2)) {
inst = (ldbm_instance *)object_get_data(inst_obj2);
instance_set_not_busy(inst);
}
if (inst_obj2 && inst_obj2 != inst_obj)
object_release(inst_obj2);
object_release(inst_obj);
goto err;
}
}
}
/* tell it to archive */
return_value = dblayer_backup(li, directory, task);
if (return_value) {
slapi_log_err(SLAPI_LOG_BACKLDBM,
"ldbm_back_ldbm2archive", "dblayer_backup failed (%d).\n", return_value);
goto err;
}
if (!run_from_cmdline) {
ldbm_instance *inst;
Object *inst_obj;
/* none of these backends are busy anymore */
for (inst_obj = objset_first_obj(li->li_instance_set); inst_obj;
inst_obj = objset_next_obj(li->li_instance_set, inst_obj)) {
inst = (ldbm_instance *)object_get_data(inst_obj);
instance_set_not_busy(inst);
}
}
err:
if (return_value) {
if (dir_bak) {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "Failed renaming %s back to %s\n",
dir_bak, directory);
if (task) {
slapi_task_log_notice(task,
"db2archive failed: renaming %s back to %s",
dir_bak, directory);
}
} else {
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "Failed removing %s\n", directory);
if (task) {
slapi_task_log_notice(task, "db2archive failed: removing %s",
directory);
}
}
ldbm_delete_dirs(directory);
if (dir_bak && (PR_SUCCESS != PR_Rename(dir_bak, directory))) {
PRErrorCode prerr = PR_GetError();
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", "Failed to rename \"%s\" to \"%s\".\n",
dir_bak, directory);
slapi_log_err(SLAPI_LOG_ERR,
"ldbm_back_ldbm2archive", SLAPI_COMPONENT_NAME_NSPR " error %d (%s)\n",
prerr, slapd_pr_strerror(prerr));
if (task) {
slapi_task_log_notice(task,
"Failed to rename \"%s\" to \"%s\".",
dir_bak, directory);
slapi_task_log_notice(task,
SLAPI_COMPONENT_NAME_NSPR " error %d (%s)",
prerr, slapd_pr_strerror(prerr));
}
}
}
out:
/* close the database down again */
if (run_from_cmdline &&
0 != dblayer_close(li, DBLAYER_ARCHIVE_MODE | DBLAYER_NO_DBTHREADS_MODE)) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_ldbm2archive", "Failed to close database\n");
if (task) {
slapi_task_log_notice(task, "Failed to close database");
}
}
slapi_ch_free_string(&dir_bak);
slapi_ch_free_string(&directory);
return return_value;
}
|
