Date: Sun, 12 Jan 2025 08:23:00 +0100 From: Cedric Blancher <cedric.blancher@gmail.com> To: freebsd-hackers@freebsd.org Subject: Re: WRITE_SAME support in FreeBSD nfsd NFSv4.1 mode? Message-ID: <CALXu0UcP5WR_gV000akarzDxGap70jJwNaf7_BgKgVVU0S2bzg@mail.gmail.com> In-Reply-To: <CAOtMX2i29F8NU493v81ggsdcprr7iifuD1aivaxsULxZrYt1tA@mail.gmail.com> References: <CAAvCNcD1CziGxmgyzyWix5ADsDXRpkbFUM32H9nEji9kR%2BVc-Q@mail.gmail.com> <CAOtMX2i29F8NU493v81ggsdcprr7iifuD1aivaxsULxZrYt1tA@mail.gmail.com>
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On Fri, 10 Jan 2025 at 16:02, Alan Somers <asomers@freebsd.org> wrote: > > On Thu, Jan 9, 2025 at 5:31=E2=80=AFPM Dan Shelton <dan.f.shelton@gmail.c= om> wrote: > > > > Hello! > > > > Does FreeBSD nfsd support the WRITE_SAME request in NFSv4.1 mode? > > > > Dan > > -- > > Dan Shelton - Cluster Specialist Win/Lin/Bsd > > Out of curiosity, what is your use case? As discussed in the linux-nfs@ list, is a typical "big data" and database accelerator, for example fast pattern fill (1 WRITE_SAME command over the write, compared to <n> commands with data block, where <n> is typically > 200 average), or just zero fill for blocks. It's basically reducing network traffic dramatically. Windows SMB 3.0 already supports that, and is a main selling point for M$ to keep database people on the W$ platform. They even added several Windows syscalls like https://learn.microsoft.com/en-us/windows/win32/api/winioctl/ni-winioctl-fs= ctl_set_zero_data Ced --=20 Cedric Blancher <cedric.blancher@gmail.com> [https://plus.google.com/u/0/+CedricBlancher/] Institute Pasteur
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