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Document that tar archives are now properly terminated.

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Commit 5a1007a508 changed the server
behavior, but I didn't notice that the existing behavior was
documented, and therefore did not update the documentation.
This commit does that.

I chose to mention that the behavior has changed rather than just
removing the reference to a deviation from a standard. It seemed
like that might be helpful to tool authors.

Discussion: http://postgr.es/m/CA+TgmoaYZbz0=Yk797aOJwkGJC-LK3iXn+wzzMx7KdwNpZhS5g@mail.gmail.com
This commit is contained in:
Robert Haas 2021-12-01 08:55:00 -05:00
parent 018b800245
commit 81fca310b3
1 changed files with 4 additions and 2 deletions
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6
doc/src/sgml/protocol.sgml
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@ -2809,8 +2809,10 @@ The commands accepted in replication mode are:
than <literal>pg_default</literal> and <literal>pg_global</literal>. The data in
the CopyOutResponse results will be a tar format (following the
<quote>ustar interchange format</quote> specified in the POSIX 1003.1-2008
standard) dump of the tablespace contents, except that the two trailing
blocks of zeroes specified in the standard are omitted.
standard) dump of the tablespace contents. Prior to
<literal>PostgreSQL</literal> 15, the server omitted the two trailing
blocks of zeroes specified in the standard, but this is no longer the
case.
After the tar data is complete, and if a backup manifest was requested,
another CopyOutResponse result is sent, containing the manifest data for the
current base backup. In any case, a final ordinary result set will be