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Check RELSEG_SIZE when postmaster starting up. 

this is neccesary to make sure that the backend and
the database uses same RELSEG_SIZE.
This commit is contained in:
Tatsuo Ishii 1999-10-16 09:32:23 +00:00
parent 6fb3c3f78f
commit 357231e68e
1 changed files with 10 additions and 0 deletions
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10
src/backend/access/transam/xlog.c
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@ -97,7 +97,13 @@ typedef struct ControlFileData
XLogRecPtr checkPoint; /* last check point record ptr */
time_t time; /* time stamp of last modification */
DBState state; /* */
/*
* following data used to make sure that configurations for this DB
* do not conflict with the backend
*/
uint32 blcksz; /* block size for this DB */
uint32 relseg_size; /* segmented file's block number */
/* MORE DATA FOLLOWS AT THE END OF THIS STRUCTURE
* - locations of data dirs
*/
@ -1164,6 +1170,7 @@ BootStrapXLOG()
ControlFile->time = time(NULL);
ControlFile->state = DB_SHUTDOWNED;
ControlFile->blcksz = BLCKSZ;
ControlFile->relseg_size = RELSEG_SIZE;
if (write(fd, buffer, BLCKSZ) != BLCKSZ)
elog(STOP, "BootStrapXLOG failed to write control file: %d", errno);
@ -1254,6 +1261,9 @@ tryAgain:
if (ControlFile->blcksz != BLCKSZ)
elog(STOP, "database was initialized in BLCKSZ(%d), but the backend was compiled in BLCKSZ(%d)",ControlFile->blcksz,BLCKSZ);
if (ControlFile->relseg_size != RELSEG_SIZE)
elog(STOP, "database was initialized in RELSEG_SIZE(%d), but the backend was compiled in RELSEG_SIZE(%d)",ControlFile->relseg_size, RELSEG_SIZE);
if (ControlFile->state == DB_SHUTDOWNED)
elog(LOG, "Data Base System was shutdowned at %s",
str_time(ControlFile->time));