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New WAL version - CRC and data blocks backup.
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/commands/sequence.c,v 1.46 2000/12/08 20:10:19 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/commands/sequence.c,v 1.47 2000/12/28 13:00:17 vadim Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -306,25 +306,38 @@ nextval(PG_FUNCTION_ARGS)
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{
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xl_seq_rec xlrec;
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XLogRecPtr recptr;
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XLogRecData rdata[2];
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Page page = BufferGetPage(buf);
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xlrec.node = elm->rel->rd_node;
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rdata[0].buffer = InvalidBuffer;
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rdata[0].data = (char*)&xlrec;
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rdata[0].len = sizeof(xl_seq_rec);
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rdata[0].next = &(rdata[1]);
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seq->last_value = next;
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seq->is_called = 't';
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seq->log_cnt = 0;
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rdata[1].buffer = InvalidBuffer;
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rdata[1].data = (char*)page + ((PageHeader) page)->pd_upper;
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rdata[1].len = ((PageHeader)page)->pd_special -
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((PageHeader)page)->pd_upper;
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rdata[1].next = NULL;
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recptr = XLogInsert(RM_SEQ_ID, XLOG_SEQ_LOG|XLOG_NO_TRAN, rdata);
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PageSetLSN(page, recptr);
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PageSetSUI(page, ThisStartUpID);
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if (fetch) /* not all numbers were fetched */
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log -= fetch;
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xlrec.node = elm->rel->rd_node;
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xlrec.value = next;
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recptr = XLogInsert(RM_SEQ_ID, XLOG_SEQ_LOG|XLOG_NO_TRAN,
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(char*) &xlrec, sizeof(xlrec), NULL, 0);
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PageSetLSN(BufferGetPage(buf), recptr);
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PageSetSUI(BufferGetPage(buf), ThisStartUpID);
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}
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/* save info in sequence relation */
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/* update on-disk data */
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seq->last_value = last; /* last fetched number */
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seq->is_called = 't';
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Assert(log >= 0);
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seq->log_cnt = log; /* how much is logged */
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seq->is_called = 't';
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END_CRIT_CODE;
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LockBuffer(buf, BUFFER_LOCK_UNLOCK);
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@ -385,25 +398,37 @@ do_setval(char *seqname, int32 next, bool iscalled)
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elm->last = next; /* last returned number */
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elm->cached = next; /* last cached number (forget cached values) */
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/* save info in sequence relation */
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START_CRIT_CODE;
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seq->last_value = next; /* last fetched number */
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seq->is_called = iscalled ? 't' : 'f';
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seq->log_cnt = (iscalled) ? 0 : 1;
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{
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xl_seq_rec xlrec;
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XLogRecPtr recptr;
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XLogRecData rdata[2];
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Page page = BufferGetPage(buf);
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xlrec.node = elm->rel->rd_node;
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xlrec.value = next;
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rdata[0].buffer = InvalidBuffer;
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rdata[0].data = (char*)&xlrec;
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rdata[0].len = sizeof(xl_seq_rec);
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rdata[0].next = &(rdata[1]);
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recptr = XLogInsert(RM_SEQ_ID, XLOG_SEQ_SET|XLOG_NO_TRAN,
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(char*) &xlrec, sizeof(xlrec), NULL, 0);
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seq->last_value = next;
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seq->is_called = 't';
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seq->log_cnt = 0;
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rdata[1].buffer = InvalidBuffer;
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rdata[1].data = (char*)page + ((PageHeader) page)->pd_upper;
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rdata[1].len = ((PageHeader)page)->pd_special -
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((PageHeader)page)->pd_upper;
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rdata[1].next = NULL;
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PageSetLSN(BufferGetPage(buf), recptr);
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PageSetSUI(BufferGetPage(buf), ThisStartUpID);
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recptr = XLogInsert(RM_SEQ_ID, XLOG_SEQ_LOG|XLOG_NO_TRAN, rdata);
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PageSetLSN(page, recptr);
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PageSetSUI(page, ThisStartUpID);
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}
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/* save info in sequence relation */
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seq->last_value = next; /* last fetched number */
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seq->is_called = iscalled ? 't' : 'f';
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seq->log_cnt = (iscalled) ? 0 : 1;
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END_CRIT_CODE;
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LockBuffer(buf, BUFFER_LOCK_UNLOCK);
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@ -708,50 +733,38 @@ get_param(DefElem *def)
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void seq_redo(XLogRecPtr lsn, XLogRecord *record)
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{
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uint8 info = record->xl_info & ~XLR_INFO_MASK;
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Relation reln;
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Buffer buffer;
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Page page;
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ItemId lp;
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HeapTupleData tuple;
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Form_pg_sequence seq;
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xl_seq_rec *xlrec;
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uint8 info = record->xl_info & ~XLR_INFO_MASK;
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Relation reln;
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Buffer buffer;
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Page page;
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char *item;
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Size itemsz;
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xl_seq_rec *xlrec = (xl_seq_rec*) XLogRecGetData(record);
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sequence_magic *sm;
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if (info != XLOG_SEQ_LOG && info != XLOG_SEQ_SET)
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if (info != XLOG_SEQ_LOG)
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elog(STOP, "seq_redo: unknown op code %u", info);
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xlrec = (xl_seq_rec*) XLogRecGetData(record);
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reln = XLogOpenRelation(true, RM_SEQ_ID, xlrec->node);
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if (!RelationIsValid(reln))
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return;
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buffer = XLogReadBuffer(false, reln, 0);
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buffer = XLogReadBuffer(true, reln, 0);
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if (!BufferIsValid(buffer))
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elog(STOP, "seq_redo: can't read block of %u/%u",
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xlrec->node.tblNode, xlrec->node.relNode);
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page = (Page) BufferGetPage(buffer);
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if (PageIsNew((PageHeader) page) ||
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((sequence_magic *) PageGetSpecialPointer(page))->magic != SEQ_MAGIC)
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elog(STOP, "seq_redo: uninitialized page of %u/%u",
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xlrec->node.tblNode, xlrec->node.relNode);
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if (XLByteLE(lsn, PageGetLSN(page)))
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{
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UnlockAndReleaseBuffer(buffer);
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return;
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}
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PageInit((Page) page, BufferGetPageSize(buffer), sizeof(sequence_magic));
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sm = (sequence_magic *) PageGetSpecialPointer(page);
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sm->magic = SEQ_MAGIC;
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lp = PageGetItemId(page, FirstOffsetNumber);
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Assert(ItemIdIsUsed(lp));
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tuple.t_data = (HeapTupleHeader) PageGetItem((Page) page, lp);
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seq = (Form_pg_sequence) GETSTRUCT(&tuple);
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seq->last_value = xlrec->value; /* last logged value */
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seq->is_called = 't';
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seq->log_cnt = 0;
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item = (char*)xlrec + sizeof(xl_seq_rec);
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itemsz = record->xl_len - sizeof(xl_seq_rec);
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itemsz = MAXALIGN(itemsz);
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if (PageAddItem(page, (Item)item, itemsz,
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FirstOffsetNumber, LP_USED) == InvalidOffsetNumber)
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PageSetLSN(page, lsn);
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PageSetSUI(page, ThisStartUpID);
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@ -771,14 +784,12 @@ void seq_desc(char *buf, uint8 xl_info, char* rec)
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if (info == XLOG_SEQ_LOG)
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strcat(buf, "log: ");
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else if (info == XLOG_SEQ_SET)
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strcat(buf, "set: ");
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else
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{
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strcat(buf, "UNKNOWN");
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return;
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}
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sprintf(buf + strlen(buf), "node %u/%u; value %d",
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xlrec->node.tblNode, xlrec->node.relNode, xlrec->value);
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sprintf(buf + strlen(buf), "node %u/%u",
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xlrec->node.tblNode, xlrec->node.relNode);
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}
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