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Fix pg_xlogdump's calculation of full-page image data.

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The old formula was completely bogus with the new WAL record format.
This commit is contained in:
Heikki Linnakangas 2014-12-05 11:39:40 +02:00
parent 9a94629833
commit ebc2b681b8
1 changed files with 18 additions and 3 deletions
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21
contrib/pg_xlogdump/pg_xlogdump.c
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@ -351,14 +351,29 @@ XLogDumpCountRecord(XLogDumpConfig *config, XLogDumpStats *stats,
uint8 recid;
uint32 rec_len;
uint32 fpi_len;
int block_id;
stats->count++;
/* Update per-rmgr statistics */
rmid = XLogRecGetRmid(record);
rec_len = XLogRecGetDataLen(record) + SizeOfXLogRecord;
fpi_len = record->decoded_record->xl_tot_len - rec_len;
/*
* Calculate the amount of FPI data in the record. Each backup block
* takes up BLCKSZ bytes, minus the "hole" length.
*
* XXX: We peek into xlogreader's private decoded backup blocks for the
* hole_length. It doesn't seem worth it to add an accessor macro for
* this.
*/
fpi_len = 0;
for (block_id = 0; block_id <= record->max_block_id; block_id++)
{
if (XLogRecHasBlockImage(record, block_id))
fpi_len += BLCKSZ - record->blocks[block_id].hole_length;
}
/* Update per-rmgr statistics */
stats->rmgr_stats[rmid].count++;
stats->rmgr_stats[rmid].rec_len += rec_len;