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Diffstat (limited to 'doc/src/sgml/ref/pg_basebackup.sgml')
| -rw-r--r-- | doc/src/sgml/ref/pg_basebackup.sgml | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/doc/src/sgml/ref/pg_basebackup.sgml b/doc/src/sgml/ref/pg_basebackup.sgml index 53aa40dcd19..4a630b59b70 100644 --- a/doc/src/sgml/ref/pg_basebackup.sgml +++ b/doc/src/sgml/ref/pg_basebackup.sgml @@ -417,30 +417,33 @@ PostgreSQL documentation specify <literal>-Xfetch</literal>. </para> <para> - The compression method can be set to <literal>gzip</literal> or - <literal>lz4</literal>, or <literal>none</literal> for no - compression. A compression level can be optionally specified, by - appending the level number after a colon (<literal>:</literal>). If no - level is specified, the default compression level will be used. If - only a level is specified without mentioning an algorithm, - <literal>gzip</literal> compression will be used if the level is - greater than 0, and no compression will be used if the level is 0. - </para> - <para> - When the tar format is used with <literal>gzip</literal> or - <literal>lz4</literal>, the suffix <filename>.gz</filename> or - <filename>.lz4</filename> will automatically be added to all tar - filenames. When the plain format is used, client-side compression may - not be specified, but it is still possible to request server-side - compression. If this is done, the server will compress the backup for - transmission, and the client will decompress and extract it. + The compression method can be set to <literal>gzip</literal>, + <literal>lz4</literal>, <literal>zstd</literal>, or + <literal>none</literal> for no compression. A compression level can + optionally be specified, by appending the level number after a colon + (<literal>:</literal>). If no level is specified, the default + compression level will be used. If only a level is specified without + mentioning an algorithm, <literal>gzip</literal> compression will be + used if the level is greater than 0, and no compression will be used if + the level is 0. + </para> + <para> + When the tar format is used with <literal>gzip</literal>, + <literal>lz4</literal>, or <literal>zstd</literal>, the suffix + <filename>.gz</filename>, <filename>.lz4</filename>, or + <filename>.zst</filename>, respectively, will be automatically added to + all tar filenames. When the plain format is used, client-side + compression may not be specified, but it is still possible to request + server-side compression. If this is done, the server will compress the + backup for transmission, and the client will decompress and extract it. </para> <para> When this option is used in combination with <literal>-Xstream</literal>, <literal>pg_wal.tar</literal> will be compressed using <literal>gzip</literal> if client-side gzip - compression is selected, but will not be compressed if server-side - compresion or LZ4 compresion is selected. + compression is selected, but will not be compressed if any other + compression algorithm is selected, or if server-side compression + is selected. </para> </listitem> </varlistentry> |