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Invent WAL timelines, as per recent discussion, to make point-in-time

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recovery more manageable.  Also, undo recent change to add FILE_HEADER
and WASTED_SPACE records to XLOG; instead make the XLOG page header
variable-size with extra fields in the first page of an XLOG file.
This should fix the boundary-case bugs observed by Mark Kirkwood.
initdb forced due to change of XLOG representation.
This commit is contained in:
Tom Lane
2004-07-21 22:31:26 +00:00
parent 8d3517dc1f
commit 2042b3428d
26 changed files with 1322 additions and 982 deletions
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24
src/backend/access/nbtree/nbtxlog.c
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@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtxlog.c,v 1.15 2004/07/11 18:01:45 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtxlog.c,v 1.16 2004/07/21 22:31:20 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -136,7 +136,7 @@ _bt_restore_meta(Relation reln, XLogRecPtr lsn,
pageop->btpo_flags = BTP_META;
PageSetLSN(metapg, lsn);
PageSetSUI(metapg, ThisStartUpID);
PageSetTLI(metapg, ThisTimeLineID);
LockBuffer(metabuf, BUFFER_LOCK_UNLOCK);
WriteBuffer(metabuf);
}
@@ -197,7 +197,7 @@ btree_xlog_insert(bool redo, bool isleaf, bool ismeta,
elog(PANIC, "btree_insert_redo: failed to add item");
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -281,7 +281,7 @@ btree_xlog_split(bool redo, bool onleft, bool isroot,
xlrec->leftlen);
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -317,7 +317,7 @@ btree_xlog_split(bool redo, bool onleft, bool isroot,
record->xl_len - SizeOfBtreeSplit - xlrec->leftlen);
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -353,7 +353,7 @@ btree_xlog_split(bool redo, bool onleft, bool isroot,
pageop->btpo_prev = rightsib;
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -420,7 +420,7 @@ btree_xlog_delete(bool redo, XLogRecPtr lsn, XLogRecord *record)
}
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -489,7 +489,7 @@ btree_xlog_delete_page(bool redo, bool ismeta,
}
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -515,7 +515,7 @@ btree_xlog_delete_page(bool redo, bool ismeta,
pageop->btpo_prev = leftsib;
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -543,7 +543,7 @@ btree_xlog_delete_page(bool redo, bool ismeta,
pageop->btpo_next = rightsib;
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -569,7 +569,7 @@ btree_xlog_delete_page(bool redo, bool ismeta,
pageop->btpo_flags = BTP_DELETED;
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);
}
@@ -632,7 +632,7 @@ btree_xlog_newroot(bool redo, XLogRecPtr lsn, XLogRecord *record)
record->xl_len - SizeOfBtreeNewroot);
PageSetLSN(page, lsn);
PageSetSUI(page, ThisStartUpID);
PageSetTLI(page, ThisTimeLineID);
LockBuffer(buffer, BUFFER_LOCK_UNLOCK);
WriteBuffer(buffer);