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Commit126c424

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committed
remove obsolete block of code, improve comments
1 parent70d85d1 commit126c424

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3 files changed

+10
-28
lines changed

3 files changed

+10
-28
lines changed

‎configure.c‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -86,9 +86,9 @@ pgBackupConfigInit(pgBackupConfig *config)
8686
config->master_port=NULL;
8787
config->master_db=NULL;
8888
config->master_user=NULL;
89-
config->replica_timeout=INT_MIN;// INT_MIN means "undefined"
89+
config->replica_timeout=INT_MIN;/* INT_MIN means "undefined" */
9090

91-
config->log_level=INT_MIN;// INT_MIN means "undefined"
91+
config->log_level=INT_MIN;/* INT_MIN means "undefined" */
9292
config->log_filename=NULL;
9393
config->error_log_filename=NULL;
9494
config->log_directory=NULL;

‎data.c‎

Lines changed: 7 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -253,6 +253,9 @@ backup_data_page(pgFile *file, XLogRecPtr prev_backup_start_lsn,
253253
* Backup data file in the from_root directory to the to_root directory with
254254
* same relative path. If prev_backup_start_lsn is not NULL, only pages with
255255
* higher lsn will be copied.
256+
* Not just copy file, but read it block by block (use bitmap in case of
257+
* incremental backup), validate checksum, optionally compress and write to
258+
* backup with special header.
256259
*/
257260
bool
258261
backup_data_file(constchar*from_root,constchar*to_root,
@@ -455,8 +458,6 @@ restore_file_partly(const char *from_root,const char *to_root, pgFile *file)
455458
write_size+=read_len;
456459
}
457460

458-
// elog(LOG, "restore_file_partly(). %s write_size %lu, file->write_size %lu",
459-
// file->path, write_size, file->write_size);
460461

461462
/* update file permission */
462463
if (chmod(to_path,file->mode)==-1)
@@ -572,27 +573,8 @@ restore_data_file(const char *from_root,
572573
else
573574
memcpy(page.data,compressed_page.data,BLCKSZ);
574575

575-
/* update checksum because we are not save whole */
576-
if(backup->checksum_version)
577-
{
578-
boolis_zero_page= false;
579-
580-
if(page.page_data.pd_upper==0)
581-
{
582-
inti;
583-
for(i=0;i<BLCKSZ&&page.data[i]==0;i++);
584-
if (i==BLCKSZ)
585-
is_zero_page= true;
586-
}
587-
588-
/* skip calc checksum if zero page */
589-
if (!is_zero_page)
590-
((PageHeader)page.data)->pd_checksum=pg_checksum_page(page.data,file->segno*RELSEG_SIZE+header.block);
591-
}
592-
593576
/*
594-
* Seek and write the restored page. Backup might have holes in
595-
* differential backups.
577+
* Seek and write the restored page.
596578
*/
597579
blknum=header.block;
598580
if (fseek(out,blknum*BLCKSZ,SEEK_SET)<0)
@@ -619,9 +601,9 @@ restore_data_file(const char *from_root,
619601
}
620602

621603
/*
622-
*Add check thatfileis not bigger than RELSEG_SIZE.
623-
*WARNING cfs_compressed file can be exceed this limit.
624-
*Add compression.
604+
*Copyfileto backup.
605+
*We do not apply compression to these files, because
606+
*it is either small control file or already compressed cfs file.
625607
*/
626608
bool
627609
copy_file(constchar*from_root,constchar*to_root,pgFile*file)

‎util.c‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -27,7 +27,7 @@ base36enc(long unsigned int value)
2727
buffer[--offset]=base36[value %36];
2828
}while (value /=36);
2929

30-
returnstrdup(&buffer[offset]);// warning: this must be free-d by the user
30+
returnstrdup(&buffer[offset]);/* warning: this must be free-d by the user */
3131
}
3232

3333
long unsignedint

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