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Re: Things to do this week instead of arguing about mixers

On Mon, Apr 27, 2009 at 02:10:10PM -0500, Eric Sandeen wrote:
> Now that we have ext4 as the new default filesystem, it'd be nice if we
> can get more applications to take advantage of some of the features.
> One big feature that has already been brought up on the list[1] is file
> preallocation, which allows an application to pre-allocate blocks it
> knows that it will eventually write into, thereby making sure it won't
> run out of space, and also generally getting a more efficient/contiguous
> file layout.
> * Come up with a list of apps which could benefit:
>   - virt image tools?

We're one step ahead of you !  libvirt supports it as of 0.6.3 for its
raw file storage management APIs, and this is in Fedora 11 trees


Thanks to Amit Shah for doing the patch for us, and providing us some
compelling performance figures at the same time:


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