Since Ext4 is supposed to be stable in 2.6.28-rc, Documentation should be
updated...it needs more updates, of course, I don't really know what
parts should really be updated
PD: the wiki needs some update aswell.
Signed-off-by: Diego Calleja <diegocg@xxxxxxxxx>
Index: 2.6/Documentation/filesystems/ext4.txt
===================================================================
--- 2.6.orig/Documentation/filesystems/ext4.txt 2008-10-17 01:01:50.000000000 +0200
+++ 2.6/Documentation/filesystems/ext4.txt 2008-10-17 01:04:38.000000000 +0200
@@ -2,10 +2,10 @@
Ext4 Filesystem
===============
-This is a development version of the ext4 filesystem, an advanced level
-of the ext3 filesystem which incorporates scalability and reliability
-enhancements for supporting large filesystems (64 bit) in keeping with
-increasing disk capacities and state-of-the-art feature requirements.
+Ext4 is an an advanced level of the ext3 filesystem which incorporates
+scalability and reliability enhancements for supporting large filesystems
+(64 bit) in keeping with increasing disk capacities and state-of-the-art
+feature requirements.
Mailing list: linux-ext4@xxxxxxxxxxxxxxx
@@ -40,7 +40,7 @@
the test_fs flag to indicate that it's ok for an in-development
filesystem to touch this filesystem:
- # tune2fs -O extents -E test_fs /dev/hda1
+ # tune2fs -O extents /dev/hda1
If the filesystem was created with 128 byte inodes, it can be
converted to use 256 byte for greater efficiency via:
@@ -68,7 +68,7 @@
2.1 Currently available
-* ability to use filesystems > 16TB (e2fsprogs support not available yet)
+* ability to use filesystems > 16TB
* extent format reduces metadata overhead (RAM, IO for access, transactions)
* extent format more robust in face of on-disk corruption due to magics,
* internal redunancy in tree
@@ -101,12 +101,6 @@
metadata checksumming have been discussed and planned for a bit but no patches
exist yet so I'm not sure they're in the near-term roadmap.
-The big performance win will come with mballoc, delalloc and flex_bg
-grouping of bitmaps and inode tables. Some test results available here:
-
- - http://www.bullopensource.org/ext4/20080530/ffsb-write-2.6.26-rc2.html
- - http://www.bullopensource.org/ext4/20080530/ffsb-readwrite-2.6.26-rc2.html
-
3. Options
==========
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