On Tue, Oct 11, 2016 at 8:52 PM, Chris Murphy <li...@colorremedies.com> wrote:
> > About the rewrite comment: that did not come from a developer, and is > definitely overstated. In any case, rewrites are not inherently bad > news, there's a bunch of OpenZFS videos from last yearss summit in > which the developers talk about various things being completely > rewritten from scratch, some things more than twice. So kinda par for > the course, and given enough time things get rewritten anyway. XFS has > had substantial changes over its history including numerous on disk > format changes even before it found its way onto Linux. Could be, should be, may be... that's fine - but it all says the same thing... they don't know how much time it is going to take to fix - and who knows what their priority is to get around to it. The advantages over what already is available don't appear to be that compelling, especially when weighed with the risks. When all this started I did some searches and found Kent Overstreet's page on bcachefs: https://goo.gl/U0UFfN He had some words about the different filesystems - and had this to say about btrfs: btrfs, which was supposed to be Linux's next generation COW filesystem - Linux's answer to zfs. Unfortunately, too much code was written too quickly without focusing on getting the core design correct first, and now it has too many design mistakes baked into the on disk format and an enormous, messy codebase - bigger that xfs. It's taken far too long to stabilize as well - poisoning the well for future filesystems because too many people were burned on btrfs, repeatedly (e.g. Fedora's tried to switch to btrfs multiple times and had to switch at the last minute, and server vendors who years ago hoped to one day roll out btrfs are now quietly migrating to xfs instead). Then there is this quote: https://www.youtube.com/watch?v=79fvDDPaIoY&t=18m28s <https://www.youtube.com/watch?v=79fvDDPaIoY&t=18m28s>"Software that is designed/ intended to be reliable should not go through large periods of instability only to be written off as "prepubescence"."
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