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Update the location of last removed WAL segment in shared memory only

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after actually removing one, so that if we can't remove segments because
WAL archiving is lagging behind, we don't unnecessarily forbid streaming
the old not-yet-archived segments that are still perfectly valid. Per
suggestion from Fujii Masao.
This commit is contained in:
Heikki Linnakangas
2010-04-12 10:40:43 +00:00
parent 258174b462
commit 30556568f5
2 changed files with 35 additions and 15 deletions
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5
src/include/access/xlog_internal.h
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@@ -11,7 +11,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.31 2010/03/28 09:27:02 sriggs Exp $
* $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.32 2010/04/12 10:40:43 heikki Exp $
*/
#ifndef XLOG_INTERNAL_H
#define XLOG_INTERNAL_H
@@ -216,6 +216,9 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader;
#define XLogFileName(fname, tli, log, seg) \
snprintf(fname, MAXFNAMELEN, "%08X%08X%08X", tli, log, seg)
#define XLogFromFileName(fname, tli, log, seg) \
sscanf(fname, "%08X%08X%08X", tli, log, seg)
#define XLogFilePath(path, tli, log, seg) \
snprintf(path, MAXPGPATH, XLOGDIR "/%08X%08X%08X", tli, log, seg)