From 9295eea8391abaa1f5ecaa50cc39c4e8165f74b4 Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Sat, 27 Feb 2010 20:16:17 +0000 Subject: Document ATAPI FLUSH CACHE EXT. --- doc/src/sgml/wal.sgml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'doc/src') diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml index 9e9489da156..17d82c71af2 100644 --- a/doc/src/sgml/wal.sgml +++ b/doc/src/sgml/wal.sgml @@ -1,4 +1,4 @@ - + Reliability and the Write-Ahead Log @@ -60,7 +60,7 @@ exist for disk controller caches. Consumer-grade IDE and SATA drives are particularly likely to have write-back caches that will not survive a power failure, though ATAPI-6 introduced a drive cache - flush command that some file systems use, e.g. ZFS. + flush command (FLUSH CACHE EXT) that some file systems use, e.g. ZFS. Many solid-state drives also have volatile write-back caches, and many do not honor cache flush commands by default. To check write caching on Linux use -- cgit v1.2.3