+ |
+
pg_stat_progress_basebackuppg_stat_progress_basebackup+ One row for each WAL sender process streaming a base backup,
+ showing current progress.
+ See .
+
+
+
certain commands during command execution. Currently, the only commands
which support progress reporting are ANALYZE,
CLUSTER,
- CREATE INDEX, and VACUUM.
+ CREATE INDEX, VACUUM,
+ and (i.e., replication
+ command that issues to take
+ a base backup).
This may be expanded in the future.
+
+
+
+
Base Backup Progress Reporting
+
+ Whenever an application like
pg_basebackup+ is taking a base backup, the
+ pg_stat_progress_basebackup
+ view will contain a row for each WAL sender process that is currently
+ running BASE_BACKUP replication command
+ and streaming the backup. The tables below describe the information
+ that will be reported and provide information about how to interpret it.
+
+
+
<structname>pg_stat_progress_basebackup</structname> View
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ pid
+ integer
+ Process ID of a WAL sender process.
+
+ |
+ phase
+ text
+ Current processing phase. See .
+
+ |
+ backup_total
+ bigint
+
+ Total amount of data that will be streamed. If progress reporting
+ is not enabled in
pg_basebackup+ (i.e., --progress option is not specified),
+ this is 0. Otherwise, this is estimated and
+ reported as of the beginning of
+ streaming database files phase. Note that
+ this is only an approximation since the database
+ may change during streaming database files phase
+ and WAL log may be included in the backup later. This is always
+ the same value as backup_streamed
+ once the amount of data streamed exceeds the estimated
+ total size.
+
+
+ |
+ backup_streamed
+ bigint
+
+ Amount of data streamed. This counter only advances
+ when the phase is streaming database files or
+ transfering wal files.
+
+
+ |
+ tablespaces_total
+ bigint
+
+ Total number of tablespaces that will be streamed.
+
+
+ |
+ tablespaces_streamed
+ bigint
+
+ Number of tablespaces streamed. This counter only
+ advances when the phase is streaming database files.
+
+
+
+
+
+
+
Base backup phases
+
+
+ |
+ Phase
+ Description
+
+
+
+ |
+ initializing
+
+ The WAL sender process is preparing to begin the backup.
+ This phase is expected to be very brief.
+
+
+ |
+ waiting for checkpoint to finish
+
+ The WAL sender process is currently performing
+ pg_start_backup to set up for
+ taking a base backup, and waiting for backup start
+ checkpoint to finish.
+
+
+ |
+ estimating backup size
+
+ The WAL sender process is currently estimating the total amount
+ of database files that will be streamed as a base backup.
+
+
+ |
+ streaming database files
+
+ The WAL sender process is currently streaming database files
+ as a base backup.
+
+
+ |
+ waiting for wal archiving to finish
+
+ The WAL sender process is currently performing
+ pg_stop_backup to finish the backup,
+ and waiting for all the WAL files required for the base backup
+ to be successfully archived.
+ If either --wal-method=none or
+ --wal-method=stream is specified in
+
pg_basebackup, the backup will end
+ when this phase is completed.
+
+
+ |
+ transferring wal files
+
+ The WAL sender process is currently transferring all WAL logs
+ generated during the backup. This phase occurs after
+ waiting for wal archiving to finish phase if
+ --wal-method=fetch is specified in
+
pg_basebackup. The backup will end
+ when this phase is completed.
+
+
+
+
+
-
+ id="protocol-replication-base-backup" xreflabel="BASE_BACKUP">
BASE_BACKUP [ LABEL 'label' ] [ PROGRESS ] [ FAST ] [ WAL ] [ NOWAIT ] [ MAX_RATE rate ] [ TABLESPACE_MAP ] [ NOVERIFY_CHECKSUMS ]
+
+ Whenever
pg_basebackup is taking a base
+ backup, the pg_stat_progress_basebackup
+ view will report the progress of the backup.
+ See for details.
+
This may make the backup take slightly longer, and in particular it
will take longer before the first data is sent.
+ Whether this is enabled or not, the
+ pg_stat_progress_basebackup view
+ report the progress of the backup in the server side. But note
+ that the total amount of data that will be streamed is estimated
+ and reported only when this option is enabled. In other words,
+ backup_total column in the view always
+ indicates 0 if this option is disabled.
+
#include "catalog/catversion.h"
#include "catalog/pg_control.h"
#include "catalog/pg_database.h"
+#include "commands/progress.h"
#include "commands/tablespace.h"
#include "common/controldata_utils.h"
#include "miscadmin.h"
* active at the same time, and they don't conflict with an exclusive backup
* either.
*
+ * tablespaces is required only when this function is called while
+ * the streaming base backup requested by pg_basebackup is running.
+ * NULL should be specified otherwise.
+ *
* tblspcmapfile is required mainly for tar format in windows as native windows
* utilities are not able to create symlinks while extracting files from tar.
* However for consistency, the same is used for all platforms.
datadirpathlen = strlen(DataDir);
+ /*
+ * Report that we are now estimating the total backup size
+ * if we're streaming base backup as requested by pg_basebackup
+ */
+ if (tablespaces)
+ pgstat_progress_update_param(PROGRESS_BASEBACKUP_PHASE,
+ PROGRESS_BASEBACKUP_PHASE_ESTIMATE_BACKUP_SIZE);
+
/* Collect information about all tablespaces */
tblspcdir = AllocateDir("pg_tblspc");
while ((de = ReadDir(tblspcdir, "pg_tblspc")) != NULL)
FROM pg_stat_get_progress_info('CREATE INDEX') AS S
LEFT JOIN pg_database D ON S.datid = D.oid;
+CREATE VIEW pg_stat_progress_basebackup AS
+ SELECT
+ S.pid AS pid,
+ CASE S.param1 WHEN 0 THEN 'initializing'
+ WHEN 1 THEN 'waiting for checkpoint to finish'
+ WHEN 2 THEN 'estimating backup size'
+ WHEN 3 THEN 'streaming database files'
+ WHEN 4 THEN 'waiting for wal archiving to finish'
+ WHEN 5 THEN 'transferring wal files'
+ END AS phase,
+ S.param2 AS backup_total,
+ S.param3 AS backup_streamed,
+ S.param4 AS tablespaces_total,
+ S.param5 AS tablespaces_streamed
+ FROM pg_stat_get_progress_info('BASEBACKUP') AS S;
+
CREATE VIEW pg_user_mappings AS
SELECT
U.oid AS umid,
#include "access/xlog_internal.h" /* for pg_start/stop_backup */
#include "catalog/pg_type.h"
#include "common/file_perm.h"
+#include "commands/progress.h"
#include "lib/stringinfo.h"
#include "libpq/libpq.h"
#include "libpq/pqformat.h"
static void SendXlogRecPtrResult(XLogRecPtr ptr, TimeLineID tli);
static int compareWalFileNames(const ListCell *a, const ListCell *b);
static void throttle(size_t increment);
+static void update_basebackup_progress(int64 delta);
static bool is_checksummed_file(const char *fullpath, const char *filename);
/* Was the backup currently in-progress initiated in recovery mode? */
/* Do not verify checksums. */
static bool noverify_checksums = false;
+/* Total amount of backup data that will be streamed */
+static int64 backup_total = 0;
+
+/* Amount of backup data already streamed */
+static int64 backup_streamed = 0;
+
/*
* Definition of one element part of an exclusion list, used for paths part
* of checksum validation or base backups. "name" is the name of the file
int datadirpathlen;
List *tablespaces = NIL;
+ backup_total = 0;
+ backup_streamed = 0;
+ pgstat_progress_start_command(PROGRESS_COMMAND_BASEBACKUP, InvalidOid);
+
datadirpathlen = strlen(DataDir);
backup_started_in_recovery = RecoveryInProgress();
total_checksum_failures = 0;
+ pgstat_progress_update_param(PROGRESS_BASEBACKUP_PHASE,
+ PROGRESS_BASEBACKUP_PHASE_WAIT_CHECKPOINT);
startptr = do_pg_start_backup(opt->label, opt->fastcheckpoint, &starttli,
labelfile, &tablespaces,
tblspc_map_file,
{
ListCell *lc;
tablespaceinfo *ti;
-
- SendXlogRecPtrResult(startptr, starttli);
+ int tblspc_streamed = 0;
/*
* Calculate the relative path of temporary statistics directory in
ti->size = opt->progress ? sendDir(".", 1, true, tablespaces, true) : -1;
tablespaces = lappend(tablespaces, ti);
+ /*
+ * Calculate the total backup size by summing up the size of each
+ * tablespace
+ */
+ if (opt->progress)
+ {
+ foreach(lc, tablespaces)
+ {
+ tablespaceinfo *tmp = (tablespaceinfo *) lfirst(lc);
+
+ backup_total += tmp->size;
+ }
+ }
+
+ /* Report that we are now streaming database files as a base backup */
+ {
+ const int index[] = {
+ PROGRESS_BASEBACKUP_PHASE,
+ PROGRESS_BASEBACKUP_BACKUP_TOTAL,
+ PROGRESS_BASEBACKUP_TBLSPC_TOTAL
+ };
+ const int64 val[] = {
+ PROGRESS_BASEBACKUP_PHASE_STREAM_BACKUP,
+ backup_total, list_length(tablespaces)
+ };
+
+ pgstat_progress_update_multi_param(3, index, val);
+ }
+
+ /* Send the starting position of the backup */
+ SendXlogRecPtrResult(startptr, starttli);
+
/* Send tablespace header */
SendBackupHeader(tablespaces);
}
else
pq_putemptymessage('c'); /* CopyDone */
+
+ tblspc_streamed++;
+ pgstat_progress_update_param(PROGRESS_BASEBACKUP_TBLSPC_STREAMED,
+ tblspc_streamed);
}
+ pgstat_progress_update_param(PROGRESS_BASEBACKUP_PHASE,
+ PROGRESS_BASEBACKUP_PHASE_WAIT_WAL_ARCHIVE);
endptr = do_pg_stop_backup(labelfile->data, !opt->nowait, &endtli);
}
PG_END_ENSURE_ERROR_CLEANUP(do_pg_abort_backup, BoolGetDatum(false));
ListCell *lc;
TimeLineID tli;
+ pgstat_progress_update_param(PROGRESS_BASEBACKUP_PHASE,
+ PROGRESS_BASEBACKUP_PHASE_TRANSFER_WAL);
+
/*
* I'd rather not worry about timelines here, so scan pg_wal and
* include all WAL files in the range between 'startptr' and 'endptr',
if (pq_putmessage('d', buf, cnt))
ereport(ERROR,
(errmsg("base backup could not send data, aborting backup")));
+ update_basebackup_progress(cnt);
len += cnt;
throttle(cnt);
errmsg("checksum verification failure during base backup")));
}
+ pgstat_progress_end_command();
}
/*
_tarWriteHeader(filename, NULL, &statbuf, false);
/* Send the contents as a CopyData message */
pq_putmessage('d', content, len);
+ update_basebackup_progress(len);
/* Pad to 512 byte boundary, per tar format requirements */
pad = ((len + 511) & ~511) - len;
MemSet(buf, 0, pad);
pq_putmessage('d', buf, pad);
+ update_basebackup_progress(pad);
}
}
if (pq_putmessage('d', buf, cnt))
ereport(ERROR,
(errmsg("base backup could not send data, aborting backup")));
+ update_basebackup_progress(cnt);
len += cnt;
throttle(cnt);
{
cnt = Min(sizeof(buf), statbuf->st_size - len);
pq_putmessage('d', buf, cnt);
+ update_basebackup_progress(cnt);
len += cnt;
throttle(cnt);
}
{
MemSet(buf, 0, pad);
pq_putmessage('d', buf, pad);
+ update_basebackup_progress(pad);
}
FreeFile(fp);
}
pq_putmessage('d', h, sizeof(h));
+ update_basebackup_progress(sizeof(h));
}
return sizeof(h);
*/
throttled_last = GetCurrentTimestamp();
}
+
+/*
+ * Increment the counter for the amount of data already streamed
+ * by the given number of bytes, and update the progress report for
+ * pg_stat_progress_basebackup.
+ */
+static void
+update_basebackup_progress(int64 delta)
+{
+ const int index[] = {
+ PROGRESS_BASEBACKUP_BACKUP_STREAMED,
+ PROGRESS_BASEBACKUP_BACKUP_TOTAL
+ };
+ int64 val[2];
+ int nparam = 0;
+
+ backup_streamed += delta;
+ val[nparam++] = backup_streamed;
+
+ /*
+ * Avoid overflowing past 100% or the full size. This may make the total
+ * size number change as we approach the end of the backup (the estimate
+ * will always be wrong if WAL is included), but that's better than having
+ * the done column be bigger than the total.
+ */
+ if (backup_total > 0 && backup_streamed > backup_total)
+ {
+ backup_total = backup_streamed;
+ val[nparam++] = backup_total;
+ }
+
+ pgstat_progress_update_multi_param(nparam, index, val);
+}
cmdtype = PROGRESS_COMMAND_CLUSTER;
else if (pg_strcasecmp(cmd, "CREATE INDEX") == 0)
cmdtype = PROGRESS_COMMAND_CREATE_INDEX;
+ else if (pg_strcasecmp(cmd, "BASEBACKUP") == 0)
+ cmdtype = PROGRESS_COMMAND_BASEBACKUP;
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 202002271
+#define CATALOG_VERSION_NO 202003031
#endif
#define PROGRESS_SCAN_BLOCKS_TOTAL 15
#define PROGRESS_SCAN_BLOCKS_DONE 16
+/* Progress parameters for pg_basebackup */
+#define PROGRESS_BASEBACKUP_PHASE 0
+#define PROGRESS_BASEBACKUP_BACKUP_TOTAL 1
+#define PROGRESS_BASEBACKUP_BACKUP_STREAMED 2
+#define PROGRESS_BASEBACKUP_TBLSPC_TOTAL 3
+#define PROGRESS_BASEBACKUP_TBLSPC_STREAMED 4
+
+/* Phases of pg_basebackup (as advertised via PROGRESS_BASEBACKUP_PHASE) */
+#define PROGRESS_BASEBACKUP_PHASE_WAIT_CHECKPOINT 1
+#define PROGRESS_BASEBACKUP_PHASE_ESTIMATE_BACKUP_SIZE 2
+#define PROGRESS_BASEBACKUP_PHASE_STREAM_BACKUP 3
+#define PROGRESS_BASEBACKUP_PHASE_WAIT_WAL_ARCHIVE 4
+#define PROGRESS_BASEBACKUP_PHASE_TRANSFER_WAL 5
+
#endif
PROGRESS_COMMAND_VACUUM,
PROGRESS_COMMAND_ANALYZE,
PROGRESS_COMMAND_CLUSTER,
- PROGRESS_COMMAND_CREATE_INDEX
+ PROGRESS_COMMAND_CREATE_INDEX,
+ PROGRESS_COMMAND_BASEBACKUP
} ProgressCommandType;
#define PGSTAT_NUM_PROGRESS_PARAM 20
(s.param8)::oid AS current_child_table_relid
FROM (pg_stat_get_progress_info('ANALYZE'::text) s(pid, datid, relid, param1, param2, param3, param4, param5, param6, param7, param8, param9, param10, param11, param12, param13, param14, param15, param16, param17, param18, param19, param20)
LEFT JOIN pg_database d ON ((s.datid = d.oid)));
+pg_stat_progress_basebackup| SELECT s.pid,
+ CASE s.param1
+ WHEN 0 THEN 'initializing'::text
+ WHEN 1 THEN 'waiting for checkpoint to finish'::text
+ WHEN 2 THEN 'estimating backup size'::text
+ WHEN 3 THEN 'streaming database files'::text
+ WHEN 4 THEN 'waiting for wal archiving to finish'::text
+ WHEN 5 THEN 'transferring wal files'::text
+ ELSE NULL::text
+ END AS phase,
+ s.param2 AS backup_total,
+ s.param3 AS backup_streamed,
+ s.param4 AS tablespaces_total,
+ s.param5 AS tablespaces_streamed
+ FROM pg_stat_get_progress_info('BASEBACKUP'::text) s(pid, datid, relid, param1, param2, param3, param4, param5, param6, param7, param8, param9, param10, param11, param12, param13, param14, param15, param16, param17, param18, param19, param20);
pg_stat_progress_cluster| SELECT s.pid,
s.datid,
d.datname,
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