From d147b3d630edef1d34de6ea819787a1ac1b8603b Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Wed, 7 Nov 2007 14:40:36 -0800 Subject: ocfs2: Support commit= mount option Mostly taken from ext3. This allows the user to set the jbd commit interval, in seconds. The default of 5 seconds stays the same, but now users can easily increase the commit interval. Typically, this would be increased in order to benefit performance at the expense of data-safety. Signed-off-by: Mark Fasheh --- Documentation/filesystems/ocfs2.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'Documentation/filesystems') diff --git a/Documentation/filesystems/ocfs2.txt b/Documentation/filesystems/ocfs2.txt index e78abdcc59ee..b63bd2d7fcd3 100644 --- a/Documentation/filesystems/ocfs2.txt +++ b/Documentation/filesystems/ocfs2.txt @@ -61,3 +61,14 @@ data=writeback Data ordering is not preserved, data may be written preferred_slot=0(*) During mount, try to use this filesystem slot first. If it is in use by another node, the first empty one found will be chosen. Invalid values will be ignored. +commit=nrsec (*) Ocfs2 can be told to sync all its data and metadata + every 'nrsec' seconds. The default value is 5 seconds. + This means that if you lose your power, you will lose + as much as the latest 5 seconds of work (your + filesystem will not be damaged though, thanks to the + journaling). This default value (or any low value) + will hurt performance, but it's good for data-safety. + Setting it to 0 will have the same effect as leaving + it at the default (5 seconds). + Setting it to very large values will improve + performance. -- cgit v1.2.3