Linked by Rahul on Sat 18th Oct 2008 11:29 UTC
Linux While Ext4 was originally merged in 2.6.19, it was marked as a development filesystem. It has been a long time coming but as planned, Ext4dev has been renamed to Ext4 in 2.6.28 to indicate its level of maturity and paving the way for production level deployments. Ext4 filesystem developer Ted Tso also endorsed Btrfs as a multi-vendor, next generation filesystem and along with the interest from Andrew Morton, Btrfs is planned to be merged before 2.6.29 is released. It will follow a similar development process to Ext4 and be initially marked as development only.
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RE[4]: relevant?
by _txf_ on Sun 19th Oct 2008 14:24 UTC in reply to "RE[3]: relevant?"
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It has to do with the fact the unix filesystems tend to allocate files on either side of the middle of the volume and not immediately one after the other.

This means that there is space after each file for edits and the appended gets allocated with the file as opposed to a fragment in the next empty space.

either way this article explains far better than I:

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