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Commit the reasonably uncontroversial parts of J.R. Nield's PITR patch, to

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wit: Add a header record to each WAL segment file so that it can be reliably
identified.  Avoid splitting WAL records across segment files (this is not
strictly necessary, but makes it simpler to incorporate the header records).
Make WAL entries for file creation, deletion, and truncation (as foreseen but
never implemented by Vadim).  Also, add support for making XLOG_SEG_SIZE
configurable at compile time, similarly to BLCKSZ.  Fix a couple bugs I
introduced in WAL replay during recent smgr API changes.  initdb is forced
due to changes in pg_control contents.
This commit is contained in:
Tom Lane
2004-02-11 22:55:26 +00:00
parent 0cb117eb33
commit c3c09be34b
13 changed files with 651 additions and 65 deletions
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5
src/backend/storage/smgr/md.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/smgr/md.c,v 1.102 2004/02/10 01:55:26 tgl Exp $
* $PostgreSQL: pgsql/src/backend/storage/smgr/md.c,v 1.103 2004/02/11 22:55:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -93,6 +93,9 @@ mdcreate(SMgrRelation reln, bool isRedo)
char *path;
File fd;
if (isRedo && reln->md_fd != NULL)
return true; /* created and opened already... */
Assert(reln->md_fd == NULL);
path = relpath(reln->smgr_rnode);