On Mon, Oct 13, 2008 at 07:02:14AM -0400, Chris Mason wrote: > On Sat, 2008-10-11 at 19:06 -0700, Ray Van Dolson wrote: > > I recall their being a thread here a number of months back regarding > > data-deduplication support for bttfs. > > > > Did anyone end up picking that up and giving a go at it? Block level > > data dedup would be *awesome* in a Linux filesystem. It does wonders > > for storing virtual machines w/ NetApp and WAFL, and even ZFS doesn't > > have this feature yet (although I've read discussions on them looking > > to add it). > > > > So far nobody has grabbed this one, but I've had more requests (no > shocker there, the kvm people are interested in it too). It probably > won't make 1.0 but the disk format will be able to support it.
Both deduplication and compression have an interesting side effect in which a write to a previously "allocated" block can return ENOSPC. This is even more exciting when you factor in mmap. Any thoughts on how to handle this? -VAL -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
