Date: Thu, 20 Dec 2018 11:58:03 +0000 From: Steven Hartland <killing@multiplay.co.uk> To: Bob Bishop <rb@gid.co.uk>, Matthew Macy <mmacy@freebsd.org> Cc: freebsd-current <freebsd-current@freebsd.org>, freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: The future of ZFS in FreeBSD Message-ID: <e74fdc25-a120-786e-030a-bcb8a5ef53c5@multiplay.co.uk> In-Reply-To: <B527B90E-9C5E-4DC5-8DE5-35A85221BA64@gid.co.uk> References: <CAPrugNriggEMMnLTZtf6xNQNYajBYNMnGdN96-ejDYQonoOhgw@mail.gmail.com> <CAHEMsqbhdcy1GKznVhxKAqCabYHvm_G9oxQR6eQrJ372215E0w@mail.gmail.com> <CAPrugNpr1YCo%2Br%2BCCts-uEfdU-nOF6-g15eqODJa_nKia_PwWw@mail.gmail.com> <CAHEMsqaJERWM_HpD4ru8Jj6QhVEb_CoOotzH1oPuYa95AoqWeA@mail.gmail.com> <CAPrugNpU2nnyuxetwvgeHXVNKRiDMk3uO-0OSBZ5nK55PKpY8A@mail.gmail.com> <B527B90E-9C5E-4DC5-8DE5-35A85221BA64@gid.co.uk>
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On 20/12/2018 11:03, Bob Bishop wrote: > Hi, > >> On 19 Dec 2018, at 23:16, Matthew Macy <mmacy@freebsd.org> wrote: >> >> On Wed, Dec 19, 2018 at 15:11 Steven Hartland <killing@multiplay.co.uk> >> wrote: >> >>> Sorry been off for a few weeks so must have missed that, please do prod me >>> on again if you don’t see any response to anything not just this. Like many >>> others I get so may emails across so many lists it’s more than likely I >>> just missed it. >>> >>> That said would you say that with the right support we can make progress >>> on the this prior to the port? I have to ask as the alternative version has >>> been on the cusp for many years now so it’s feels more like a distant >>> memory than something that may happen, no disrespect to anyone involved, as >>> I know all too well how hard it can be to get something like this over the >>> line, especially when people have competing priorities. >>> >> I am hoping that it's sufficiently important to FreeBSD ZFS developers that >> they'll give the PR the attention it needs so that it can be merged before >> summer. My understanding is that it's mostly suffered from neglect. TRIM is >> most important to FreeBSD and it already had its own implementation. >> >> https://github.com/zfsonlinux/zfs/pull/5925 > Please correct me if I’m wrong but this looks a lot less mature than FreeBSD’s existing TRIM support for ZFS which we’ve had in production for six years. > > What is the rationale here? I’m concerned that it looks like an opportunity for mighty regressions. > This is the case, but overall this solution is thought to be a better approach. With anything like this there is always a risk, so we all need a concerted effort to get to one solution. Regards Steve
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