site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Thanks, Dan _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... According to a Wikipedia page about extents, it has stated HFS+ is among several filesystems that support extents. All the documentation I've seen about user level extent support in Mac OS X, as far as "any documentation" goes, is the Xsan programming guide (specifically, the F_ALLOCEXTSPACE fcntl flag.) Does F_ALLOCEXTSPACE work on HFS+, non-Xsan volumes? If not, what is the HFS+ generic equivalent? This email sent to site_archiver@lists.apple.com