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"xlog" is not a particularly clear abbreviation for "write-ahead log", and it sometimes confuses users into believe that the contents of the "pg_xlog" directory are not critical data, leading to unpleasant consequences. So, rename the directory to "pg_wal". This patch modifies pg_upgrade and pg_basebackup to understand both the old and new directory layouts; the former is necessary given the purpose of the tool, while the latter merely avoids an unnecessary backward-compatibility break. We may wish to consider renaming other programs, switches, and functions which still use the old "xlog" naming to also refer to "wal". However, that's still under discussion, so let's do just this much for now. Discussion: CAB7nPqTeC-8+zux8_-4ZD46V7YPwooeFxgndfsq5Rg8ibLVm1A@mail.gmail.com Michael Paquier
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* pgarch.h
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* Exports from postmaster/pgarch.c.
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*
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* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/postmaster/pgarch.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _PGARCH_H
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#define _PGARCH_H
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/* ----------
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* Archiver control info.
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*
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* We expect that archivable files within pg_wal will have names between
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* MIN_XFN_CHARS and MAX_XFN_CHARS in length, consisting only of characters
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* appearing in VALID_XFN_CHARS. The status files in archive_status have
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* corresponding names with ".ready" or ".done" appended.
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* ----------
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*/
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#define MIN_XFN_CHARS 16
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#define MAX_XFN_CHARS 40
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#define VALID_XFN_CHARS "0123456789ABCDEF.history.backup.partial"
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/* ----------
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* Functions called from postmaster
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* ----------
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*/
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extern int pgarch_start(void);
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#ifdef EXEC_BACKEND
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extern void PgArchiverMain(int argc, char *argv[]) pg_attribute_noreturn();
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#endif
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#endif /* _PGARCH_H */
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