/
migrate.c
1492 lines (1338 loc) · 50.1 KB
/
migrate.c
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/*
BAREOS® - Backup Archiving REcovery Open Sourced
Copyright (C) 2004-2012 Free Software Foundation Europe e.V.
Copyright (C) 2011-2012 Planets Communications B.V.
Copyright (C) 2013-2013 Bareos GmbH & Co. KG
This program is Free Software; you can redistribute it and/or
modify it under the terms of version three of the GNU Affero General Public
License as published by the Free Software Foundation and included
in the file LICENSE.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
/*
* BAREOS Director -- migrate.c -- responsible for doing migration and copy jobs.
*
* Also handles Copy jobs (March MMVIII)
*
* Kern Sibbald, September MMIV
*
* Basic tasks done here:
* Open DB and create records for this job.
* Open Message Channel with Storage daemon to tell him a job will be starting.
* Open connection with Storage daemon and pass him commands to do the backup.
* When the Storage daemon finishes the job, update the DB.
*/
#include "bareos.h"
#include "dird.h"
#ifndef HAVE_REGEX_H
#include "lib/bregex.h"
#else
#include <regex.h>
#endif
static const int dbglevel = 10;
static int getJob_to_migrate(JCR *jcr);
struct idpkt;
static bool regex_find_jobids(JCR *jcr, idpkt *ids, const char *query1,
const char *query2, const char *type);
static bool find_mediaid_then_jobids(JCR *jcr, idpkt *ids, const char *query1,
const char *type);
static bool find_jobids_from_mediaid_list(JCR *jcr, idpkt *ids, const char *type);
static bool find_jobids_of_pool_uncopied_jobs(JCR *jcr, idpkt *ids);
static void start_migration_job(JCR *jcr);
static int get_next_dbid_from_list(char **p, DBId_t *DBId);
static bool set_migration_next_pool(JCR *jcr, POOLRES **pool);
/*
* Called here before the job is run to do the job
* specific setup. Note, one of the important things to
* complete in this init code is to make the definitive
* choice of input and output storage devices. This is
* because immediately after the init, the job is queued
* in the jobq.c code, and it checks that all the resources
* (storage resources in particular) are available, so these
* must all be properly defined.
*
* previous_jr refers to the job DB record of the Job that is
* going to be migrated.
* prev_job refers to the job resource of the Job that is
* going to be migrated.
* jcr is the jcr for the current "migration" job. It is a
* control job that is put in the DB as a migration job, which
* means that this job migrated a previous job to a new job.
* No Volume or File data is associated with this control
* job.
* mig_jcr refers to the newly migrated job that is run by
* the current jcr. It is a backup job that moves (migrates) the
* data written for the previous_jr into the new pool. This
* job (mig_jcr) becomes the new backup job that replaces
* the original backup job. Note, this jcr is not really run. It
* is simply attached to the current jcr. It will show up in
* the Director's status output, but not in the SD or FD, both of
* which deal only with the current migration job (i.e. jcr).
*/
bool do_migration_init(JCR *jcr)
{
POOLRES *pool = NULL;
JOBRES *job, *prev_job;
JCR *mig_jcr; /* newly migrated job */
int count;
apply_pool_overrides(jcr);
if (!allow_duplicate_job(jcr)) {
return false;
}
jcr->jr.PoolId = get_or_create_pool_record(jcr, jcr->res.pool->name());
if (jcr->jr.PoolId == 0) {
Dmsg1(dbglevel, "JobId=%d no PoolId\n", (int)jcr->JobId);
Jmsg(jcr, M_FATAL, 0, _("Could not get or create a Pool record.\n"));
return false;
}
/*
* Note, at this point, pool is the pool for this job. We
* transfer it to rpool (read pool), and a bit later,
* pool will be changed to point to the write pool,
* which comes from pool->NextPool.
*/
jcr->res.rpool = jcr->res.pool; /* save read pool */
pm_strcpy(jcr->res.rpool_source, jcr->res.pool_source);
Dmsg2(dbglevel, "Read pool=%s (From %s)\n", jcr->res.rpool->name(), jcr->res.rpool_source);
if (!get_or_create_fileset_record(jcr)) {
Dmsg1(dbglevel, "JobId=%d no FileSet\n", (int)jcr->JobId);
Jmsg(jcr, M_FATAL, 0, _("Could not get or create the FileSet record.\n"));
return false;
}
/* If we find a job or jobs to migrate it is previous_jr.JobId */
count = getJob_to_migrate(jcr);
if (count < 0) {
return false;
}
if (count == 0) {
set_migration_next_pool(jcr, &pool);
return true; /* no work */
}
Dmsg1(dbglevel, "Back from getJob_to_migrate JobId=%d\n", (int)jcr->JobId);
if (jcr->previous_jr.JobId == 0) {
Dmsg1(dbglevel, "JobId=%d no previous JobId\n", (int)jcr->JobId);
Jmsg(jcr, M_INFO, 0, _("No previous Job found to %s.\n"), jcr->get_ActionName());
set_migration_next_pool(jcr, &pool);
return true; /* no work */
}
if (create_restore_bootstrap_file(jcr) < 0) {
Jmsg(jcr, M_FATAL, 0, _("Create bootstrap file failed.\n"));
return false;
}
if (jcr->previous_jr.JobId == 0 || jcr->ExpectedFiles == 0) {
jcr->setJobStatus(JS_Terminated);
Dmsg1(dbglevel, "JobId=%d expected files == 0\n", (int)jcr->JobId);
if (jcr->previous_jr.JobId == 0) {
Jmsg(jcr, M_INFO, 0, _("No previous Job found to %s.\n"), jcr->get_ActionName());
} else {
Jmsg(jcr, M_INFO, 0, _("Previous Job has no data to %s.\n"), jcr->get_ActionName());
}
set_migration_next_pool(jcr, &pool);
return true; /* no work */
}
Dmsg5(dbglevel, "JobId=%d: Current: Name=%s JobId=%d Type=%c Level=%c\n",
(int)jcr->JobId,
jcr->jr.Name, (int)jcr->jr.JobId,
jcr->jr.JobType, jcr->jr.JobLevel);
LockRes();
job = (JOBRES *)GetResWithName(R_JOB, jcr->jr.Name);
prev_job = (JOBRES *)GetResWithName(R_JOB, jcr->previous_jr.Name);
UnlockRes();
if (!job) {
Jmsg(jcr, M_FATAL, 0, _("Job resource not found for \"%s\".\n"), jcr->jr.Name);
return false;
}
if (!prev_job) {
Jmsg(jcr, M_FATAL, 0, _("Previous Job resource not found for \"%s\".\n"),
jcr->previous_jr.Name);
return false;
}
jcr->spool_data = job->spool_data; /* turn on spooling if requested in job */
/*
* Create a migration jcr
*/
mig_jcr = jcr->mig_jcr = new_jcr(sizeof(JCR), dird_free_jcr);
memcpy(&mig_jcr->previous_jr, &jcr->previous_jr, sizeof(mig_jcr->previous_jr));
/*
* Turn the mig_jcr into a "real" job that takes on the aspects of the previous backup job "prev_job".
*/
set_jcr_defaults(mig_jcr, prev_job);
/*
* Don't let WatchDog checks Max*Time value on this Job
*/
mig_jcr->no_maxtime = true;
/*
* Don't check for duplicates on migration and copy jobs
*/
mig_jcr->IgnoreDuplicateJobChecking = true;
if (!setup_job(mig_jcr)) {
Jmsg(jcr, M_FATAL, 0, _("setup job failed.\n"));
return false;
}
/*
* Now reset the job record from the previous job
*/
memcpy(&mig_jcr->jr, &jcr->previous_jr, sizeof(mig_jcr->jr));
/*
* Update the jr to reflect the new values of PoolId and JobId.
*/
mig_jcr->jr.PoolId = jcr->jr.PoolId;
mig_jcr->jr.JobId = mig_jcr->JobId;
Dmsg4(dbglevel, "mig_jcr: Name=%s JobId=%d Type=%c Level=%c\n",
mig_jcr->jr.Name, (int)mig_jcr->jr.JobId, mig_jcr->jr.JobType,
mig_jcr->jr.JobLevel);
if (set_migration_next_pool(jcr, &pool)) {
/* If pool storage specified, use it as source */
copy_rstorage(mig_jcr, pool->storage, _("Pool resource"));
copy_rstorage(jcr, pool->storage, _("Pool resource"));
mig_jcr->res.pool = jcr->res.pool;
mig_jcr->res.next_pool = jcr->res.next_pool;
mig_jcr->jr.PoolId = jcr->jr.PoolId;
}
return true;
}
/*
* set_migration_next_pool() called by do_migration_init()
* at differents stages.
* The idea here is to make a common subroutine for the
* NextPool's search code and to permit do_migration_init()
* to return with NextPool set in jcr struct.
*/
static bool set_migration_next_pool(JCR *jcr, POOLRES **retpool)
{
POOL_DBR pr;
char ed1[100];
POOLRES *pool;
const char *storage_source;
/*
* Get the PoolId used with the original job. Then
* find the pool name from the database record.
*/
memset(&pr, 0, sizeof(pr));
pr.PoolId = jcr->jr.PoolId;
if (!db_get_pool_record(jcr, jcr->db, &pr)) {
Jmsg(jcr, M_FATAL, 0, _("Pool for JobId %s not in database. ERR=%s\n"),
edit_int64(pr.PoolId, ed1), db_strerror(jcr->db));
return false;
}
/*
* Get the pool resource corresponding to the original job
*/
pool = (POOLRES *)GetResWithName(R_POOL, pr.Name);
*retpool = pool;
if (!pool) {
Jmsg(jcr, M_FATAL, 0, _("Pool resource \"%s\" not found.\n"), pr.Name);
return false;
}
/*
* See if there is a next pool override.
*/
if (jcr->res.run_next_pool_override) {
pm_strcpy(jcr->res.npool_source, _("Run NextPool override"));
pm_strcpy(jcr->res.pool_source, _("Run NextPool override"));
storage_source = _("Storage from Run NextPool override");
} else {
/*
* See if there is a next pool override in the Job definition.
*/
if (jcr->res.job->next_pool) {
jcr->res.next_pool = jcr->res.job->next_pool;
pm_strcpy(jcr->res.npool_source, _("Job's NextPool resource"));
pm_strcpy(jcr->res.pool_source, _("Job's NextPool resource"));
storage_source = _("Storage from Job's NextPool resource");
} else {
/*
* Fall back to the pool's NextPool definition.
*/
jcr->res.next_pool = pool->NextPool;
pm_strcpy(jcr->res.npool_source, _("Job Pool's NextPool resource"));
pm_strcpy(jcr->res.pool_source, _("Job Pool's NextPool resource"));
storage_source = _("Storage from Pool's NextPool resource");
}
}
/*
* If the original backup pool has a NextPool, make sure a
* record exists in the database. Note, in this case, we
* will be migrating from pool to pool->NextPool.
*/
if (jcr->res.next_pool) {
jcr->jr.PoolId = get_or_create_pool_record(jcr, jcr->res.next_pool->name());
if (jcr->jr.PoolId == 0) {
return false;
}
}
if (!set_migration_wstorage(jcr, pool, jcr->res.next_pool, storage_source)) {
return false;
}
jcr->res.pool = jcr->res.next_pool;
Dmsg2(dbglevel, "Write pool=%s read rpool=%s\n", jcr->res.pool->name(), jcr->res.rpool->name());
return true;
}
/*
* Do a Migration of a previous job
*
* Returns: false on failure
* true on success
*/
bool do_migration(JCR *jcr)
{
char ed1[100];
BSOCK *sd;
JCR *mig_jcr = jcr->mig_jcr; /* newly migrated job */
/*
* If mig_jcr is NULL, there is nothing to do for this job,
* so set a normal status, cleanup and return OK.
*/
if (!mig_jcr) {
jcr->setJobStatus(JS_Terminated);
migration_cleanup(jcr, jcr->JobStatus);
return true;
}
if (!db_get_job_record(jcr, jcr->db, &jcr->previous_jr)) {
Jmsg(jcr, M_FATAL, 0, _("Could not get job record for JobId %s to %s. ERR=%s"),
edit_int64(jcr->previous_jr.JobId, ed1),
jcr->get_ActionName(),
db_strerror(jcr->db));
jcr->setJobStatus(JS_Terminated);
migration_cleanup(jcr, jcr->JobStatus);
return true;
}
/* Make sure this job was not already migrated */
if (jcr->previous_jr.JobType != JT_BACKUP &&
jcr->previous_jr.JobType != JT_JOB_COPY) {
Jmsg(jcr, M_INFO, 0, _("JobId %s already %s probably by another Job. %s stopped.\n"),
edit_int64(jcr->previous_jr.JobId, ed1),
jcr->get_ActionName(true),
jcr->get_OperationName());
jcr->setJobStatus(JS_Terminated);
migration_cleanup(jcr, jcr->JobStatus);
return true;
}
/* Print Job Start message */
Jmsg(jcr, M_INFO, 0, _("Start %s JobId %s, Job=%s\n"),
jcr->get_OperationName(), edit_uint64(jcr->JobId, ed1), jcr->Job);
/*
* Open a message channel connection with the Storage
* daemon. This is to let him know that our client
* will be contacting him for a backup session.
*
*/
Dmsg0(110, "Open connection with storage daemon\n");
jcr->setJobStatus(JS_WaitSD);
mig_jcr->setJobStatus(JS_WaitSD);
/*
* Start conversation with Storage daemon
*/
if (!connect_to_storage_daemon(jcr, 10, SDConnectTimeout, 1)) {
return false;
}
sd = jcr->store_bsock;
/*
* Now start a job with the Storage daemon
*/
Dmsg2(dbglevel, "Read store=%s, write store=%s\n",
((STORERES *)jcr->rstorage->first())->name(),
((STORERES *)jcr->wstorage->first())->name());
if (!start_storage_daemon_job(jcr, jcr->rstorage, jcr->wstorage, /*send_bsr*/true)) {
return false;
}
Dmsg0(150, "Storage daemon connection OK\n");
/*
* We re-update the job start record so that the start
* time is set after the run before job. This avoids
* that any files created by the run before job will
* be saved twice. They will be backed up in the current
* job, but not in the next one unless they are changed.
* Without this, they will be backed up in this job and
* in the next job run because in that case, their date
* is after the start of this run.
*/
jcr->start_time = time(NULL);
jcr->jr.StartTime = jcr->start_time;
jcr->jr.JobTDate = jcr->start_time;
jcr->setJobStatus(JS_Running);
/* Update job start record for this migration control job */
if (!db_update_job_start_record(jcr, jcr->db, &jcr->jr)) {
Jmsg(jcr, M_FATAL, 0, "%s", db_strerror(jcr->db));
return false;
}
/* Declare the job started to start the MaxRunTime check */
jcr->setJobStarted();
mig_jcr->start_time = time(NULL);
mig_jcr->jr.StartTime = mig_jcr->start_time;
mig_jcr->jr.JobTDate = mig_jcr->start_time;
mig_jcr->setJobStatus(JS_Running);
/* Update job start record for the real migration backup job */
if (!db_update_job_start_record(mig_jcr, mig_jcr->db, &mig_jcr->jr)) {
Jmsg(jcr, M_FATAL, 0, "%s", db_strerror(mig_jcr->db));
return false;
}
Dmsg4(dbglevel, "mig_jcr: Name=%s JobId=%d Type=%c Level=%c\n",
mig_jcr->jr.Name, (int)mig_jcr->jr.JobId,
mig_jcr->jr.JobType, mig_jcr->jr.JobLevel);
/*
* Start the job prior to starting the message thread below
* to avoid two threads from using the BSOCK structure at
* the same time.
*/
if (!sd->fsend("run")) {
return false;
}
/*
* Now start a Storage daemon message thread
*/
if (!start_storage_daemon_message_thread(jcr)) {
return false;
}
jcr->setJobStatus(JS_Running);
mig_jcr->setJobStatus(JS_Running);
/* Pickup Job termination data */
/* Note, the SD stores in jcr->JobFiles/ReadBytes/JobBytes/JobErrors */
wait_for_storage_daemon_termination(jcr);
jcr->setJobStatus(jcr->SDJobStatus);
db_write_batch_file_records(jcr); /* used by bulk batch file insert */
if (jcr->JobStatus != JS_Terminated) {
return false;
}
migration_cleanup(jcr, jcr->JobStatus);
return true;
}
struct idpkt {
POOLMEM *list;
uint32_t count;
};
/* Add an item to the list if it is unique */
static void add_unique_id(idpkt *ids, char *item)
{
const int maxlen = 30;
char id[maxlen+1];
char *q = ids->list;
/* Walk through current list to see if each item is the same as item */
while (*q) {
id[0] = 0;
for (int i=0; i<maxlen; i++) {
if (*q == 0) {
break;
} else if (*q == ',') {
q++;
break;
}
id[i] = *q++;
id[i+1] = 0;
}
if (bstrcmp(item, id)) {
return;
}
}
/* Did not find item, so add it to list */
if (ids->count == 0) {
ids->list[0] = 0;
} else {
pm_strcat(ids->list, ",");
}
pm_strcat(ids->list, item);
ids->count++;
// Dmsg3(0, "add_uniq count=%d Ids=%p %s\n", ids->count, ids->list, ids->list);
return;
}
/*
* Callback handler make list of DB Ids
*/
static int unique_dbid_handler(void *ctx, int num_fields, char **row)
{
idpkt *ids = (idpkt *)ctx;
/* Sanity check */
if (!row || !row[0]) {
Dmsg0(dbglevel, "dbid_hdlr error empty row\n");
return 1; /* stop calling us */
}
add_unique_id(ids, row[0]);
Dmsg3(dbglevel, "dbid_hdlr count=%d Ids=%p %s\n", ids->count, ids->list, ids->list);
return 0;
}
struct uitem {
dlink link;
char *item;
};
static int item_compare(void *item1, void *item2)
{
uitem *i1 = (uitem *)item1;
uitem *i2 = (uitem *)item2;
return strcmp(i1->item, i2->item);
}
static int unique_name_handler(void *ctx, int num_fields, char **row)
{
dlist *list = (dlist *)ctx;
uitem *new_item = (uitem *)malloc(sizeof(uitem));
uitem *item;
memset(new_item, 0, sizeof(uitem));
new_item->item = bstrdup(row[0]);
Dmsg1(dbglevel, "Unique_name_hdlr Item=%s\n", row[0]);
item = (uitem *)list->binary_insert((void *)new_item, item_compare);
if (item != new_item) { /* already in list */
free(new_item->item);
free((char *)new_item);
return 0;
}
return 0;
}
/* Get Job names in Pool */
static const char *sql_job =
"SELECT DISTINCT Job.Name from Job,Pool"
" WHERE Pool.Name='%s' AND Job.PoolId=Pool.PoolId";
/* Get JobIds from regex'ed Job names */
static const char *sql_jobids_from_job =
"SELECT DISTINCT Job.JobId,Job.StartTime FROM Job,Pool"
" WHERE Job.Name='%s' AND Pool.Name='%s' AND Job.PoolId=Pool.PoolId"
" ORDER by Job.StartTime";
/* Get Client names in Pool */
static const char *sql_client =
"SELECT DISTINCT Client.Name from Client,Pool,Job"
" WHERE Pool.Name='%s' AND Job.ClientId=Client.ClientId AND"
" Job.PoolId=Pool.PoolId";
/* Get JobIds from regex'ed Client names */
static const char *sql_jobids_from_client =
"SELECT DISTINCT Job.JobId,Job.StartTime FROM Job,Pool,Client"
" WHERE Client.Name='%s' AND Pool.Name='%s' AND Job.PoolId=Pool.PoolId"
" AND Job.ClientId=Client.ClientId AND Job.Type IN ('B','C')"
" AND Job.JobStatus IN ('T','W')"
" ORDER by Job.StartTime";
/* Get Volume names in Pool */
static const char *sql_vol =
"SELECT DISTINCT VolumeName FROM Media,Pool WHERE"
" VolStatus in ('Full','Used','Error') AND Media.Enabled=1 AND"
" Media.PoolId=Pool.PoolId AND Pool.Name='%s'";
/* Get JobIds from regex'ed Volume names */
static const char *sql_jobids_from_vol =
"SELECT DISTINCT Job.JobId,Job.StartTime FROM Media,JobMedia,Job"
" WHERE Media.VolumeName='%s' AND Media.MediaId=JobMedia.MediaId"
" AND JobMedia.JobId=Job.JobId AND Job.Type IN ('B','C')"
" AND Job.JobStatus IN ('T','W') AND Media.Enabled=1"
" ORDER by Job.StartTime";
static const char *sql_smallest_vol =
"SELECT Media.MediaId FROM Media,Pool,JobMedia WHERE"
" Media.MediaId in (SELECT DISTINCT MediaId from JobMedia) AND"
" Media.VolStatus in ('Full','Used','Error') AND Media.Enabled=1 AND"
" Media.PoolId=Pool.PoolId AND Pool.Name='%s'"
" ORDER BY VolBytes ASC LIMIT 1";
static const char *sql_oldest_vol =
"SELECT Media.MediaId FROM Media,Pool,JobMedia WHERE"
" Media.MediaId in (SELECT DISTINCT MediaId from JobMedia) AND"
" Media.VolStatus in ('Full','Used','Error') AND Media.Enabled=1 AND"
" Media.PoolId=Pool.PoolId AND Pool.Name='%s'"
" ORDER BY LastWritten ASC LIMIT 1";
/* Get JobIds when we have selected MediaId */
static const char *sql_jobids_from_mediaid =
"SELECT DISTINCT Job.JobId,Job.StartTime FROM JobMedia,Job"
" WHERE JobMedia.JobId=Job.JobId AND JobMedia.MediaId IN (%s)"
" AND Job.Type IN ('B','C') AND Job.JobStatus IN ('T','W')"
" ORDER by Job.StartTime";
/* Get the number of bytes in the pool */
static const char *sql_pool_bytes =
"SELECT SUM(JobBytes) FROM Job WHERE JobId IN"
" (SELECT DISTINCT Job.JobId from Pool,Job,Media,JobMedia WHERE"
" Pool.Name='%s' AND Media.PoolId=Pool.PoolId AND"
" VolStatus in ('Full','Used','Error','Append') AND Media.Enabled=1 AND"
" Job.Type IN ('B','C') AND Job.JobStatus IN ('T','W') AND"
" JobMedia.JobId=Job.JobId AND Job.PoolId=Media.PoolId)";
/* Get the number of bytes in the Jobs */
static const char *sql_job_bytes =
"SELECT SUM(JobBytes) FROM Job WHERE JobId IN (%s)";
/* Get Media Ids in Pool */
static const char *sql_mediaids =
"SELECT MediaId FROM Media,Pool WHERE"
" VolStatus in ('Full','Used','Error') AND Media.Enabled=1 AND"
" Media.PoolId=Pool.PoolId AND Pool.Name='%s' ORDER BY LastWritten ASC";
/* Get JobIds in Pool longer than specified time */
static const char *sql_pool_time =
"SELECT DISTINCT Job.JobId FROM Pool,Job,Media,JobMedia WHERE"
" Pool.Name='%s' AND Media.PoolId=Pool.PoolId AND"
" VolStatus IN ('Full','Used','Error') AND Media.Enabled=1 AND"
" Job.Type IN ('B','C') AND Job.JobStatus IN ('T','W') AND"
" JobMedia.JobId=Job.JobId AND Job.PoolId=Media.PoolId"
" AND Job.RealEndTime<='%s'";
/* Get JobIds from successfully completed backup jobs which have not been copied before */
static const char *sql_jobids_of_pool_uncopied_jobs =
"SELECT DISTINCT Job.JobId,Job.StartTime FROM Job,Pool"
" WHERE Pool.Name = '%s' AND Pool.PoolId = Job.PoolId"
" AND Job.Type = 'B' AND Job.JobStatus IN ('T','W')"
" AND Job.jobBytes > 0"
" AND Job.JobId NOT IN"
" (SELECT PriorJobId FROM Job WHERE"
" Type IN ('B','C') AND Job.JobStatus IN ('T','W')"
" AND PriorJobId != 0)"
" ORDER by Job.StartTime";
/*
* const char *sql_ujobid =
* "SELECT DISTINCT Job.Job from Client,Pool,Media,Job,JobMedia "
* " WHERE Media.PoolId=Pool.PoolId AND Pool.Name='%s' AND"
* " JobMedia.JobId=Job.JobId AND Job.PoolId=Media.PoolId";
*/
/*
*
* This is the central piece of code that finds a job or jobs
* actually JobIds to migrate. It first looks to see if one
* has been "manually" specified in jcr->MigrateJobId, and if
* so, it returns that JobId to be run. Otherwise, it
* examines the Selection Type to see what kind of migration
* we are doing (Volume, Job, Client, ...) and applies any
* Selection Pattern if appropriate to obtain a list of JobIds.
* Finally, it will loop over all the JobIds found, except the last
* one starting a new job with MigrationJobId set to that JobId, and
* finally, it returns the last JobId to the caller.
*
* Returns: -1 on error
* 0 if no jobs to migrate
* 1 if OK and jcr->previous_jr filled in
*/
static int getJob_to_migrate(JCR *jcr)
{
char ed1[30], ed2[30];
POOL_MEM query(PM_MESSAGE);
JobId_t JobId;
DBId_t DBId = 0;
int status;
char *p;
idpkt ids, mid, jids;
db_int64_ctx ctx;
int64_t pool_bytes;
time_t ttime;
struct tm tm;
char dt[MAX_TIME_LENGTH];
int count = 0;
int limit = 99; /* limit + 1 is max jobs to start */
ids.list = get_pool_memory(PM_MESSAGE);
ids.list[0] = 0;
ids.count = 0;
mid.list = get_pool_memory(PM_MESSAGE);
mid.list[0] = 0;
mid.count = 0;
jids.list = get_pool_memory(PM_MESSAGE);
jids.list[0] = 0;
jids.count = 0;
/*
* If MigrateJobId is set, then we migrate only that Job,
* otherwise, we go through the full selection of jobs to
* migrate.
*/
if (jcr->MigrateJobId != 0) {
Dmsg1(dbglevel, "At Job start previous jobid=%u\n", jcr->MigrateJobId);
JobId = jcr->MigrateJobId;
} else {
switch (jcr->res.job->selection_type) {
case MT_JOB:
if (!regex_find_jobids(jcr, &ids, sql_job, sql_jobids_from_job, "Job")) {
goto bail_out;
}
break;
case MT_CLIENT:
if (!regex_find_jobids(jcr, &ids, sql_client, sql_jobids_from_client, "Client")) {
goto bail_out;
}
break;
case MT_VOLUME:
if (!regex_find_jobids(jcr, &ids, sql_vol, sql_jobids_from_vol, "Volume")) {
goto bail_out;
}
break;
case MT_SQLQUERY:
if (!jcr->res.job->selection_pattern) {
Jmsg(jcr, M_FATAL, 0, _("No %s SQL selection pattern specified.\n"), jcr->get_OperationName());
goto bail_out;
}
Dmsg1(dbglevel, "SQL=%s\n", jcr->res.job->selection_pattern);
if (!db_sql_query(jcr->db, jcr->res.job->selection_pattern,
unique_dbid_handler, (void *)&ids)) {
Jmsg(jcr, M_FATAL, 0,
_("SQL failed. ERR=%s\n"), db_strerror(jcr->db));
goto bail_out;
}
break;
case MT_SMALLEST_VOL:
if (!find_mediaid_then_jobids(jcr, &ids, sql_smallest_vol, "Smallest Volume")) {
goto bail_out;
}
break;
case MT_OLDEST_VOL:
if (!find_mediaid_then_jobids(jcr, &ids, sql_oldest_vol, "Oldest Volume")) {
goto bail_out;
}
break;
case MT_POOL_OCCUPANCY:
ctx.count = 0;
/* Find count of bytes in pool */
Mmsg(query, sql_pool_bytes, jcr->res.rpool->name());
if (!db_sql_query(jcr->db, query.c_str(), db_int64_handler, (void *)&ctx)) {
Jmsg(jcr, M_FATAL, 0, _("SQL failed. ERR=%s\n"), db_strerror(jcr->db));
goto bail_out;
}
if (ctx.count == 0) {
Jmsg(jcr, M_INFO, 0, _("No Volumes found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
pool_bytes = ctx.value;
Dmsg2(dbglevel, "highbytes=%lld pool=%lld\n", jcr->res.rpool->MigrationHighBytes,
pool_bytes);
if (pool_bytes < (int64_t)jcr->res.rpool->MigrationHighBytes) {
Jmsg(jcr, M_INFO, 0, _("No Volumes found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
Dmsg0(dbglevel, "We should do Occupation migration.\n");
ids.count = 0;
/* Find a list of MediaIds that could be migrated */
Mmsg(query, sql_mediaids, jcr->res.rpool->name());
Dmsg1(dbglevel, "query=%s\n", query.c_str());
if (!db_sql_query(jcr->db, query.c_str(), unique_dbid_handler, (void *)&ids)) {
Jmsg(jcr, M_FATAL, 0, _("SQL failed. ERR=%s\n"), db_strerror(jcr->db));
goto bail_out;
}
if (ids.count == 0) {
Jmsg(jcr, M_INFO, 0, _("No Volumes found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
Dmsg2(dbglevel, "Pool Occupancy ids=%d MediaIds=%s\n", ids.count, ids.list);
if (!find_jobids_from_mediaid_list(jcr, &ids, "Volume")) {
goto bail_out;
}
/* ids == list of jobs */
p = ids.list;
for (int i = 0; i < (int)ids.count; i++) {
status = get_next_dbid_from_list(&p, &DBId);
Dmsg2(dbglevel, "get_next_dbid status=%d JobId=%u\n", status, (uint32_t)DBId);
if (status < 0) {
Jmsg(jcr, M_FATAL, 0, _("Invalid JobId found.\n"));
goto bail_out;
} else if (status == 0) {
break;
}
mid.count = 1;
Mmsg(mid.list, "%s", edit_int64(DBId, ed1));
if (jids.count > 0) {
pm_strcat(jids.list, ",");
}
pm_strcat(jids.list, mid.list);
jids.count += mid.count;
/* Find count of bytes from Jobs */
Mmsg(query, sql_job_bytes, mid.list);
Dmsg1(dbglevel, "Jobbytes query: %s\n", query.c_str());
if (!db_sql_query(jcr->db, query.c_str(), db_int64_handler, (void *)&ctx)) {
Jmsg(jcr, M_FATAL, 0, _("SQL failed. ERR=%s\n"), db_strerror(jcr->db));
goto bail_out;
}
pool_bytes -= ctx.value;
Dmsg2(dbglevel, "Total %s Job bytes=%s\n", jcr->get_ActionName(),
edit_int64_with_commas(ctx.value, ed1));
Dmsg2(dbglevel, "lowbytes=%s poolafter=%s\n",
edit_int64_with_commas(jcr->res.rpool->MigrationLowBytes, ed1),
edit_int64_with_commas(pool_bytes, ed2));
if (pool_bytes <= (int64_t)jcr->res.rpool->MigrationLowBytes) {
Dmsg0(dbglevel, "We should be done.\n");
break;
}
}
/* Transfer jids to ids, where the jobs list is expected */
ids.count = jids.count;
pm_strcpy(ids.list, jids.list);
Dmsg2(dbglevel, "Pool Occupancy ids=%d JobIds=%s\n", ids.count, ids.list);
break;
case MT_POOL_TIME:
ttime = time(NULL) - (time_t)jcr->res.rpool->MigrationTime;
(void)localtime_r(&ttime, &tm);
strftime(dt, sizeof(dt), "%Y-%m-%d %H:%M:%S", &tm);
ids.count = 0;
Mmsg(query, sql_pool_time, jcr->res.rpool->name(), dt);
Dmsg1(dbglevel, "query=%s\n", query.c_str());
if (!db_sql_query(jcr->db, query.c_str(), unique_dbid_handler, (void *)&ids)) {
Jmsg(jcr, M_FATAL, 0, _("SQL failed. ERR=%s\n"), db_strerror(jcr->db));
goto bail_out;
}
if (ids.count == 0) {
Jmsg(jcr, M_INFO, 0, _("No Volumes found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
Dmsg2(dbglevel, "PoolTime ids=%d JobIds=%s\n", ids.count, ids.list);
break;
case MT_POOL_UNCOPIED_JOBS:
if (!find_jobids_of_pool_uncopied_jobs(jcr, &ids)) {
goto bail_out;
}
break;
default:
Jmsg(jcr, M_FATAL, 0, _("Unknown %s Selection Type.\n"), jcr->get_OperationName());
goto bail_out;
}
/*
* Loop over all jobids except the last one, sending
* them to start_migration_job(), which will start a job
* for each of them. For the last JobId, we handle it below.
*/
p = ids.list;
if (ids.count == 0) {
Jmsg(jcr, M_INFO, 0, _("No JobIds found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
Jmsg(jcr, M_INFO, 0, _("The following %u JobId%s chosen to be %s: %s\n"),
ids.count, (ids.count < 2) ? _(" was") : _("s were"),
jcr->get_ActionName(true), ids.list);
Dmsg2(dbglevel, "Before loop count=%d ids=%s\n", ids.count, ids.list);
/*
* Note: to not over load the system, limit the number
* of new jobs started to 100 (see limit above)
*/
for (int i = 1; i < (int)ids.count; i++) {
JobId = 0;
status = get_next_jobid_from_list(&p, &JobId);
Dmsg3(dbglevel, "getJobid_no=%d status=%d JobId=%u\n", i, status, JobId);
if (status < 0) {
Jmsg(jcr, M_FATAL, 0, _("Invalid JobId found.\n"));
goto bail_out;
} else if (status == 0) {
Jmsg(jcr, M_INFO, 0, _("No JobIds found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
jcr->MigrateJobId = JobId;
/* Don't start any more when limit reaches zero */
limit--;
if (limit > 0) {
start_migration_job(jcr);
Dmsg0(dbglevel, "Back from start_migration_job\n");
}
}
/* Now get the last JobId and handle it in the current job */
JobId = 0;
status = get_next_jobid_from_list(&p, &JobId);
Dmsg2(dbglevel, "Last get_next_jobid status=%d JobId=%u\n", status, (int)JobId);
if (status < 0) {
Jmsg(jcr, M_FATAL, 0, _("Invalid JobId found.\n"));
goto bail_out;
} else if (status == 0) {
Jmsg(jcr, M_INFO, 0, _("No JobIds found to %s.\n"), jcr->get_ActionName());
goto ok_out;
}
}
jcr->previous_jr.JobId = JobId;
Dmsg1(dbglevel, "Previous jobid=%d\n", (int)jcr->previous_jr.JobId);
if (!db_get_job_record(jcr, jcr->db, &jcr->previous_jr)) {
Jmsg(jcr, M_FATAL, 0, _("Could not get job record for JobId %s to %s. ERR=%s"),
edit_int64(jcr->previous_jr.JobId, ed1),
jcr->get_ActionName(), db_strerror(jcr->db));
goto bail_out;
}
Jmsg(jcr, M_INFO, 0, _("%s using JobId=%s Job=%s\n"),
jcr->get_OperationName(),
edit_int64(jcr->previous_jr.JobId, ed1), jcr->previous_jr.Job);
Dmsg4(dbglevel, "%s JobId=%d using JobId=%s Job=%s\n",
jcr->get_OperationName(),
jcr->JobId,
edit_int64(jcr->previous_jr.JobId, ed1), jcr->previous_jr.Job);
count = 1;
ok_out:
goto out;
bail_out:
count = -1;
out:
free_pool_memory(ids.list);
free_pool_memory(mid.list);
free_pool_memory(jids.list);
return count;
}
static void start_migration_job(JCR *jcr)
{
char ed1[50];
JobId_t jobid;
UAContext *ua;
POOL_MEM cmd(PM_MESSAGE);
ua = new_ua_context(jcr);
ua->batch = true;
Mmsg(ua->cmd, "run job=\"%s\" jobid=%s ignoreduplicatecheck=yes",
jcr->res.job->name(), edit_uint64(jcr->MigrateJobId, ed1));
/*
* Make sure we have something to compare against.
*/
if (jcr->res.pool) {
/*
* See if there was actually a pool override.
*/
if (jcr->res.pool != jcr->res.job->pool) {
Mmsg(cmd, " pool=\"%s\"", jcr->res.pool->name());
pm_strcat(ua->cmd, cmd.c_str());
}
/*
* See if there was actually a next pool override.
*/
if (jcr->res.next_pool && jcr->res.next_pool != jcr->res.pool->NextPool) {
Mmsg(cmd, " nextpool=\"%s\"", jcr->res.next_pool->name());
pm_strcat(ua->cmd, cmd.c_str());
}
}
Dmsg2(dbglevel, "=============== %s cmd=%s\n", jcr->get_OperationName(), ua->cmd);
parse_ua_args(ua); /* parse command */
jobid = run_cmd(ua, ua->cmd);
if (jobid == 0) {
Jmsg(jcr, M_ERROR, 0, _("Could not start migration job.\n"));
} else {
Jmsg(jcr, M_INFO, 0, _("%s JobId %d started.\n"), jcr->get_OperationName(), (int)jobid);
}
free_ua_context(ua);
}
static bool find_mediaid_then_jobids(JCR *jcr, idpkt *ids,
const char *query1,