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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index b56070b0fb9..fa8de0161e6 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -1697,6 +1697,15 @@ include 'filename' </para> <para> + For reliable recovery when changing a cluster from + <varname>fsync</varname> off to on, it is necessary to force all + modified buffers in the kernel to durable storage. This can be + done while the cluster is shutdown or while fsync is on by running + <command>initdb --sync-only</command>, running <command>sync</>, + unmounting the file system, or rebooting the server. + </para> + + <para> In many situations, turning off <xref linkend="guc-synchronous-commit"> for noncritical transactions can provide much of the potential performance benefit of turning off <varname>fsync</varname>, without |