From nobody Thu Oct 27 13:32:56 2022 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 4Mymp92F6Pz4g3Zf for ; Thu, 27 Oct 2022 13:33:05 +0000 (UTC) (envelope-from tdtemccnp@gmail.com) Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) (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 "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Mymp826n2z3LjY for ; Thu, 27 Oct 2022 13:33:04 +0000 (UTC) (envelope-from tdtemccnp@gmail.com) Received: by mail-ej1-x62e.google.com with SMTP id d26so4574300eje.10 for ; Thu, 27 Oct 2022 06:33:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=3Siyv4RDdowvPBtO+LCh2v/fYJUWqDjKOMlSqDj8zTs=; b=WKJ6j2WCa9csdfyXA5mizzfNCqCsnMmsRF/2/Kf7lYlLC3G14m28V3WM+MSonvLpUR wuB5P2OsMYDkyBXc7Wo8w5uPATiLCfh1THnLbbKpWWpzW3PkKaXlZ7a39xM9XWE3oBBw NbOqMiCtH6UJZjozHVF/xypwXPuKzTbdeVJPpTZIFBdHdfX7/ePQG+ZLfUGFFmzTzdaw /BDJiz8wjSnrVbAgqCfIqLQHJnOVZIEgFGIlZEr4w5fr7JgpFK8ZzbQU1zSNRIq7idDJ XWfWdwOukTyJlyI12b9eb8h/F239+oiWOb7nq5pkzOxbKwDQH2ws8ubn9o7xdzaOlHmh RUAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc: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=3Siyv4RDdowvPBtO+LCh2v/fYJUWqDjKOMlSqDj8zTs=; b=ZmfVSNQ67zwlU2BtpDn9l00O5hl2dan3rIkoN+YWnGJXowHSRLH74/ngNZAk5c3VLn +h6Pne/Jo2CVSBm+ffb3DDjiPrpcW6lr4k9ofI+VF+rPtl+g8Lt8tIklMqSnxi9kb3fh nTGEIGETi7HE64ETjMuM5iS8y4vm04HD7ZcvW8oM0BEAHZP0K6syeE94uZ6ihmD1lvRm 34BI2X2+mehCInq91saImY5ZrrhQA8c5tWc8a/qKzebueiUqQk6vLbXAEGKwIhhXKheP CcBierxJyAt8R+b+SEIh5aPv5IR6BH+EXOV/0bTU2+GxAkh1Lhue+8nBdp4pp47M2hlS nyHg== X-Gm-Message-State: ACrzQf3sGmB6cbZ/r7/yiAJaxy0L0Kg4aA+Xc1723DsaADREAojVjiTT Nq4Cva0OQRwrQyjuRR1K+43RPRXoGt83KknqQ5NIDryX X-Google-Smtp-Source: AMsMyM6QzHb2hEIMR6Xb5fgNOEbovHzksVgFEPUJQ982Ijdc0GgwUCr7tATkllrHb5hKVh2qwwj/P9qVBtrwr1ebL9Y= X-Received: by 2002:a17:907:761b:b0:7a3:86dd:d330 with SMTP id jx27-20020a170907761b00b007a386ddd330mr22562857ejc.34.1666877583014; Thu, 27 Oct 2022 06:33:03 -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: <5391a765-a526-fb19-2f24-bd9067d2f125@denninger.net> In-Reply-To: <5391a765-a526-fb19-2f24-bd9067d2f125@denninger.net> From: Turritopsis Dohrnii Teo En Ming Date: Thu, 27 Oct 2022 21:32:56 +0800 Message-ID: Subject: Re: Does OpenZFS support taking snapshots of the entire operating system? To: Karl Denninger Cc: freebsd-fs@freebsd.org, ceo@teo-en-ming-corp.com Content-Type: multipart/alternative; boundary="000000000000383f0805ec042e5c" X-Rspamd-Queue-Id: 4Mymp826n2z3LjY X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20210112 header.b=WKJ6j2WC; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of tdtemccnp@gmail.com designates 2a00:1450:4864:20::62e as permitted sender) smtp.mailfrom=tdtemccnp@gmail.com X-Spamd-Result: default: False [-2.93 / 15.00]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_LONG(-0.98)[-0.977]; NEURAL_HAM_MEDIUM(-0.95)[-0.951]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20210112]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::62e:from]; ARC_NA(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; DKIM_TRACE(0.00)[gmail.com:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_TLS_LAST(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; RCVD_COUNT_TWO(0.00)[2] X-ThisMailContainsUnwantedMimeParts: N --000000000000383f0805ec042e5c Content-Type: text/plain; charset="UTF-8" On Thu, 27 Oct 2022 at 21:30, Karl Denninger wrote: > You can snapshot a running root filesystem if it is ZFS; that has always > been true of ZFS. > > If the "entire operating system" spans more than one filesystem or pool, > however, you cannot get an atomic snapshot across them. Thus if you want > that capacity (e.g. an atomic snapshot that is an "instant in time") the > "entire operating system" must be contained in one ZFS filesystem. > On 10/27/2022 09:26, Turritopsis Dohrnii Teo En Ming wrote: > > Subject: Does OpenZFS support taking snapshots of the entire operating > system? > > Good day from Singapore, > > Does OpenZFS support taking snapshots of the entire operating system? > > > -- > Karl Denninger > karl@denninger.net > *The Market Ticker* > *[S/MIME encrypted email preferred]* > Noted with thanks Karl. Mr. Turritopsis Dohrnii Teo En Ming Targeted Individual in Singapore --000000000000383f0805ec042e5c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Thu, 27 Oct 2022 at 21:30, Karl De= nninger <karl@denninger.net>= ; wrote:
=20 =20 =20

You can snapshot a running root filesystem if it is ZFS; that has always been true of ZFS.

If the "entire operating system" spans more than one files= ystem or pool, however, you cannot get an atomic snapshot across them.=C2= =A0 Thus if you want that capacity (e.g. an atomic snapshot that is an "instant in time") the "entire operating system" = must be contained in one ZFS filesystem.

On 10/27/2022 09:26, Turritopsis Dohrnii Teo En Ming wrote:
=20
Subject: Does OpenZFS support taking snapshots of the entire operating system?

Good day from Singapore,

Does OpenZFS support taking snapshots of the entire operating system?


--
Karl Denninger
karl@denninge= r.net
The Market Ticker
[S/MIME encrypted email preferred]

Noted with thanks Karl.

Mr. Turritopsis Dohrnii Teo En Ming
Targeted Indi= vidual in Singapore=C2=A0
--000000000000383f0805ec042e5c--