Am Sonntag, 10. März 2013 schrieb Harald Glatt: > > Very good points, > > > > I was also gonna write something by the lines of 'all that matters is > > achieving the minimum amount of redundancy, as requested by the user, > > at the maximum possible performance'. > > > > After reading your post now, Roger, I'm much more clear on what I > > actually wanted to say, which is pretty much the same thing: > > > > In paradise really all I would have to tell btrfs is how many drives > > I'm willing to give away so that they will be used exclusively for > > redundancy. Everything else btrfs should figure out by itself. Not > > just because it's simpler for the user, but also because btrfs > > actually is in a position to KNOW better. […] > > It sounds quite futuristic to me, but it is definitely something that > > we have to achieve hopefully rather sooner than later :) > > > > I'm looking forward to it! > > I have to add something to my own message: Even the notion of thinking > in 'how many devices do I want to give away for redundancy' is > outdated... What it really comes down to is how much space am I > willing to sacrifice so that my reliablilty is increasing. Rather than > addressing that at a per-drive level with a futuristic fs like btrfs I > think setting a percent value of total space would be best. Here are > my n hard drives, I want to give up thirty percent of maximum space so > that basically I can lose that amount of space across any device > combination and be safe. Do this for me and do it at maximum possible > performance with the device count, and type, and sizes that I've given > you. And if I'm not using the filesystem much, if I have tons of space > free, feel free to build even more redundancy while idle. > > This is pretty much what it would be like in a perfect world, in my > opinion :) --
Still, the way to a perfect world is done in steps. Thus I agree with Hugo to start somewhere and I think for a admin who wants to know and specify exactly what is going one the patches Hugo offered for discussions are a huge step forward. I think they are a good base to build upon. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
