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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 than <literal>pg_default</literal> and <literal>pg_global</literal>. The data in
the CopyOutResponse results will be a tar format (following the the CopyOutResponse results will be a tar format (following the
<quote>ustar interchange format</quote> specified in the POSIX 1003.1-2008 <quote>ustar interchange format</quote> specified in the POSIX 1003.1-2008
standard) dump of the tablespace contents, except that the two trailing standard) dump of the tablespace contents. Prior to
blocks of zeroes specified in the standard are omitted. <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, After the tar data is complete, and if a backup manifest was requested,
another CopyOutResponse result is sent, containing the manifest data for the another CopyOutResponse result is sent, containing the manifest data for the
current base backup. In any case, a final ordinary result set will be current base backup. In any case, a final ordinary result set will be