From nobody Sun Sep 15 17:48:22 2024 X-Original-To: freebsd-fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4X6Fs24mczz5WVf1 for ; Sun, 15 Sep 2024 17:48:38 +0000 (UTC) (envelope-from rincebrain@gmail.com) Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4X6Fs02FCCz4k9R for ; Sun, 15 Sep 2024 17:48:36 +0000 (UTC) (envelope-from rincebrain@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b=kSPJdaU4; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of rincebrain@gmail.com designates 2a00:1450:4864:20::32e as permitted sender) smtp.mailfrom=rincebrain@gmail.com Received: by mail-wm1-x32e.google.com with SMTP id 5b1f17b1804b1-42cb1758e41so20322435e9.1 for ; Sun, 15 Sep 2024 10:48:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726422514; x=1727027314; darn=freebsd.org; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=lfeyu7pzKh1ozo5JDzGUwXXHoypTr9de5mDurQR2IxE=; b=kSPJdaU4JFSjy8FyxdtSkiKZAt6s6PbW2X/QoKqEnhgdC4E/o9y3eQzKOmbpuYedeo S7N6Gwf7tzy775cl7JB9Fv2XzkKKH+D4R30AuvQigqm3/5pofdxmQfWKD/Htew/yK1yr wI7M6BkallNEj1mT7U+0fz0piAnJWQEjn583SP+JCQQpUy1cEh5S7FJpc9Ka3rx3g3Mi u9Usk/OeYRrMtiEd1j3naG6YKaOBfUzIMHisc3EazfcwQPqCwI4RMq91scGxLdNgAK6Y /Yg9tpfrPF54K8lMhJIi7GRHjxjokEoBLQbpJQDZdqnctfnwerqZJe64wMcpH2XJipr3 /jvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726422514; x=1727027314; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=lfeyu7pzKh1ozo5JDzGUwXXHoypTr9de5mDurQR2IxE=; b=DeZXdR57TbrNABiJTqISogG+OsNEA+lT8CuAStWT8c7duTYzVDzRmY3jhwR8i9FAzs GiAJhiPEWRoOxOH18xOevZC7eDMcXoP3SGBfxoqOuwQLDznyRhgH/sY9jF0axh9IyLXu g6n4ezt5SSRESBIHZVs5VN0+AxexK5hrjJvRKh46dd8BXXYVR/HWu84Xdy6f/f46biki kxduK4VXNSJ9gJ9qSJLikeaQEjaMxJ1EDYVTwFpaxIiqqBfyuTsBO1EXk72DtLyJHccR PDOYBtCUg9XkN3Nqfqa+MCQA3StQIVnir8Y+SLl5y3SuzWWFKD9dCMyKp78YzziEdAPs lBFw== X-Gm-Message-State: AOJu0Yx78o2bizEib46QjtgJEDt56bnLvzVM1I9py1fSDdD3ifm6AoX7 WhK9F2nNmQD+k7WEQ3iajROuY/StbfME1nMPp9K6idQvoas/5tamhXuF4yBEz/aUtCA/AHTOJ4c d15/YUGOisloN1Abof4bbw/6HdqSDmw== X-Google-Smtp-Source: AGHT+IFUUXJFJId11P5BbYsLEoRirvUKzSR+Ly65BeXXen28e5hhtrCA1zHrDfd7TBuq9+vGuD+s8oRcD8g70CGWX64= X-Received: by 2002:a05:600c:1e13:b0:429:a05:32fb with SMTP id 5b1f17b1804b1-42defa24635mr30229845e9.10.1726422513629; Sun, 15 Sep 2024 10:48:33 -0700 (PDT) List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@FreeBSD.org MIME-Version: 1.0 References: In-Reply-To: From: Rich Date: Sun, 15 Sep 2024 13:48:22 -0400 Message-ID: Subject: Re: zfs send zvol same feature flags different ashift To: freebsd-fs@freebsd.org Content-Type: multipart/alternative; boundary="000000000000a8430406222c10c6" X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.99 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-0.999]; NEURAL_HAM_SHORT(-0.99)[-0.993]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCPT_COUNT_ONE(0.00)[1]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; FREEMAIL_FROM(0.00)[gmail.com]; DKIM_TRACE(0.00)[gmail.com:+]; FROM_HAS_DN(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; TO_DN_NONE(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MISSING_XM_UA(0.00)[]; MID_RHS_MATCH_FROMTLD(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::32e:from] X-Rspamd-Queue-Id: 4X6Fs02FCCz4k9R --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 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
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.

- Rich
On Sun, = Sep 15, 2024 at 12:54=E2=80=AFPM void <vo= id@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 issue?=

advice appreciated, thanks
--

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