linux-ext4 - [LSF TOPIC] [ATTEND] Next3 snapshots in Ext4

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Message-ID: <AANLkTink_0Whv8q286Gy0yFXJ6pvFPK0UN-93uTUM9u6@mail.gmail.com>
Date:	Thu, 17 Jun 2010 10:32:39 +0300
From:	"Amir G." <amir73il@...rs.sourceforge.net>
To:	lsf10-pc@...ts.linuxfoundation.org
Cc:	linux-fsdevel@...r.kernel.org,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	Theodore Tso <tytso@....edu>
Subject: [LSF TOPIC] [ATTEND] Next3 snapshots in Ext4

Hi,

I got comments from many people, including Ric, that would like to see
Next3 snapshots merged into Ext4,
so I would like to attend and discuss some of the issues related to the merge.

Agenda from the top of my head:
1. Overview of the Next3 snapshots implementation in Ext3
2. How to deal with move-on-write of data blocks in extent mapped files?
3. How to guaranty snapshots data consistency on copy-on-write of
non-journaled data blocks?
4. What are the implications of delayed allocation on consistency of snapshots?
5. how to deal with file fragmentation due to move-on-write?

Thanks,
Amir.
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