From: Avantika Mathur LTC <mathur@us.ibm.com>
Subject: Ext4 devel interlock meeting minutes (Dec. 6 2006)
Date: Wed, 06 Dec 2006 14:07:18 -0800
Message-ID: <45773F16.8020202@us.ibm.com>
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Ext4 Developer Interlock Call: 12-6-06 Minutes

Attendees: Mingming Cao, Suparna Bhattacharya, Jean-Pierre Dion, Val=E9=
rie=20
Cl=E9ment, Shaggy, Takashi Sato, Eric Sandeen, Linda Wang

- Preallocation patches
 -- submitted by Amit Arora, implement the creation of the initialized=20
extent, using ioctl interface.
 -- The part of recognizing the initialized extent is written
 -- Still need part of writing to the preallocated extent.
 -- Amit has also written changes to e2fsprogs to recognize the=20
preallocated extent
 -- Currently will keep the ioctl interface and see of there are=20
comments on the mailing list.

- Big Block Group patches
 -- Ted and Andreas have commented on Val=E9rie's patches, they are=20
concerned about not being able to allocate a contiguous range of blocks=
=20
for the allocation bitmaps.

- Currently all block group descriptors are stored in the first block=20
group. The current 128 byte block group size limits the filesystem size=
=20
to 256 TB.
 -- The big block group patches will extend the maximum filesystem size=
=20
limit
 -- An alternative is to move the block descriptors, so the the=20
filesytem size is not limited by the size of the block group.  Metabloc=
k=20
groups may could be used in the solution

- Alex Tomas posted delayed allocation, multiple block allocation, in=20
kernel preallocation, and block reservation patches last week.

- Takashi has updated the defrag patches to support quotas and will loo=
k=20
for comments on the mailing list.

- Wiki:  the ext4 wiki is at ext4.wiki.kernel.org; we will start adding=
=20
to the wiki and keeping it up to date.

thanks
Avantika