On Wed, Oct 15, 2008 at 3:15 PM, Andi Kleen <[EMAIL PROTECTED]> wrote: > On Wed, Oct 15, 2008 at 03:39:16PM +0200, Avi Kivity wrote: >> Andi Kleen wrote: >> >Ray Van Dolson <[EMAIL PROTECTED]> writes: >> > >> > >> >>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). >> >> >> > >> >There are some patches to do in QEMU's cow format for KVM. That's >> >user level only. >> > >> >> And thus, doesn't work for sharing between different images, especially >> at runtime. > > It would work if the images are all based once on a reference image, won't it? > I would imagine that's the common situation for installing lots of VMs.
Like, using bcp (btrfs specific cp) for creating "new" images from a base one? Will that suffice? With modifications after that being COW, that could be a simple way of having a "stupid/hack" no duplication. > >> I'd really, really [any number of reallies], really like to >> see btrfs deduplication. > > Sure it would be useful for a couple of things. > > -Andi > > -- > [EMAIL PROTECTED] > -- > 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 > -- Miguel Sousa Filipe -- 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
