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| author | Peter Eisentraut <peter_e@gmx.net> | 2018-03-25 14:58:49 -0400 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2018-03-25 14:58:49 -0400 |
| commit | bf4a8676c316c177f395b54d3305ea4ccc838a66 (patch) | |
| tree | f8f8ccf2416bbd75a886352890e34edec3afcfd8 /doc/src | |
| parent | 8ad8d916f99d19e0be7800992c828c3c1a01b693 (diff) | |
pg_resetwal: Allow users to change the WAL segment size
This adds a new option --wal-segsize (analogous to initdb) that changes
the WAL segment size in pg_control.
Author: Nathan Bossart <bossartn@amazon.com>
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ref/pg_resetwal.sgml | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/pg_resetwal.sgml b/doc/src/sgml/ref/pg_resetwal.sgml index 5e2e3086a6e..3f885bdd620 100644 --- a/doc/src/sgml/ref/pg_resetwal.sgml +++ b/doc/src/sgml/ref/pg_resetwal.sgml @@ -276,6 +276,28 @@ PostgreSQL documentation </varlistentry> <varlistentry> + <term><option>--wal-segsize=<replaceable class="parameter">wal_segment_size</replaceable></option></term> + <listitem> + <para> + Set the new WAL segment size, in megabytes. The value must be set to a + power of 2 between 1 and 1024 (megabytes). See the same option of <xref + linkend="app-initdb"/> for more information. + </para> + + <note> + <para> + While <command>pg_resetwal</command> will set the WAL starting address + beyond the latest existing WAL segment file, some segment size changes + can cause previous WAL file names to be reused. It is recommended to + use <option>-l</option> together with this option to manually set the + WAL starting address if WAL file name overlap will cause problems with + your archiving strategy. + </para> + </note> + </listitem> + </varlistentry> + + <varlistentry> <term><option>-x <replaceable class="parameter">xid</replaceable></option></term> <term><option>--next-transaction-id=<replaceable class="parameter">xid</replaceable></option></term> <listitem> |