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Commit357231e

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Check RELSEG_SIZE when postmaster starting up.
this is neccesary to make sure that the backend andthe database uses same RELSEG_SIZE.
1 parent6fb3c3f commit357231e

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  • src/backend/access/transam

1 file changed

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‎src/backend/access/transam/xlog.c

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -97,7 +97,13 @@ typedef struct ControlFileData
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XLogRecPtrcheckPoint;/* last check point record ptr */
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time_ttime;/* time stamp of last modification */
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DBStatestate;/* */
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/*
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* following data used to make sure that configurations for this DB
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* do not conflict with the backend
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*/
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uint32blcksz;/* block size for this DB */
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uint32relseg_size;/* segmented file's block number */
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/* MORE DATA FOLLOWS AT THE END OF THIS STRUCTURE
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* - locations of data dirs
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*/
@@ -1164,6 +1170,7 @@ BootStrapXLOG()
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ControlFile->time=time(NULL);
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ControlFile->state=DB_SHUTDOWNED;
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ControlFile->blcksz=BLCKSZ;
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ControlFile->relseg_size=RELSEG_SIZE;
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if (write(fd,buffer,BLCKSZ)!=BLCKSZ)
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elog(STOP,"BootStrapXLOG failed to write control file: %d",errno);
@@ -1254,6 +1261,9 @@ StartupXLOG()
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if (ControlFile->blcksz!=BLCKSZ)
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elog(STOP,"database was initialized in BLCKSZ(%d), but the backend was compiled in BLCKSZ(%d)",ControlFile->blcksz,BLCKSZ);
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if (ControlFile->relseg_size!=RELSEG_SIZE)
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elog(STOP,"database was initialized in RELSEG_SIZE(%d), but the backend was compiled in RELSEG_SIZE(%d)",ControlFile->relseg_size,RELSEG_SIZE);
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if (ControlFile->state==DB_SHUTDOWNED)
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elog(LOG,"Data Base System was shutdowned at %s",
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str_time(ControlFile->time));

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