Date: Sun, 15 Sep 2024 13:48:22 -0400 From: Rich <rincebrain@gmail.com> To: freebsd-fs@freebsd.org Subject: Re: zfs send zvol same feature flags different ashift Message-ID: <CAOeNLupZpvBUu7NBEnT1VNMZzUJ5XT-40XK4iguNbA2r%2BteznQ@mail.gmail.com> In-Reply-To: <ZucRPsRAX_rBuoAO@int21h> References: <ZucRPsRAX_rBuoAO@int21h>
next in thread | previous in thread | raw e-mail | index | archive | help
--000000000000a8430406222c10c6 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Smaller ashift will, generally, produce smaller things, because you're only having to round up to multiples of 512b, not 4096b, with compression, and even if the volume's data itself is uncompressed, the metadata is not. - Rich On Sun, Sep 15, 2024 at 12:54=E2=80=AFPM void <void@f-m.fm> wrote: > Hi, > > When sending a zvol, does the ashift on both systems need to be the same? > Both pools have the same feature flags, both on same -current version. > The sending system ashift=3D12; the receiving system ashift=3D9 > When looking at both systems, I thought to check first. Is ashift an issu= e? > > advice appreciated, thanks > -- > > --000000000000a8430406222c10c6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div>Smaller ashift will, generally, produce smaller thing= s, because you're only having to round up to multiples of 512b, not 409= 6b, with compression, and even if the volume's data itself is uncompres= sed, the metadata is not.</div><div><br></div><div>- Rich<br></div></div><b= r><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, = Sep 15, 2024 at 12:54=E2=80=AFPM void <<a href=3D"mailto:void@f-m.fm">vo= id@f-m.fm</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style= =3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding= -left:1ex">Hi,<br> <br> When sending a zvol, does the ashift on both systems need to be the same?<b= r> Both pools have the same feature flags, both on same -current version.<br> The sending system ashift=3D12; the receiving system ashift=3D9<br> When looking at both systems, I thought to check first. Is ashift an issue?= <br> <br> advice appreciated, thanks<br> -- <br> <br> </blockquote></div> --000000000000a8430406222c10c6--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAOeNLupZpvBUu7NBEnT1VNMZzUJ5XT-40XK4iguNbA2r%2BteznQ>