Date: Thu, 27 Oct 2022 21:32:56 +0800 From: Turritopsis Dohrnii Teo En Ming <tdtemccnp@gmail.com> To: Karl Denninger <karl@denninger.net> Cc: freebsd-fs@freebsd.org, ceo@teo-en-ming-corp.com Subject: Re: Does OpenZFS support taking snapshots of the entire operating system? Message-ID: <CAD3upLu%2B1n5Td3zrVOdrsBvPZ-akOtOPm%2Bem8CiXegptTEqYUw@mail.gmail.com> In-Reply-To: <5391a765-a526-fb19-2f24-bd9067d2f125@denninger.net> References: <CAD3upLtCew9a63DM=8D1KKi=1sZXs9HqpYSdUJ%2B7BhwL8TKJrg@mail.gmail.com> <5391a765-a526-fb19-2f24-bd9067d2f125@denninger.net>
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[-- Attachment #1 --]
On Thu, 27 Oct 2022 at 21:30, Karl Denninger <karl@denninger.net> 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
[-- Attachment #2 --]
<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 27 Oct 2022 at 21:30, Karl Denninger <<a href="mailto:karl@denninger.net">karl@denninger.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>You can snapshot a running root filesystem if it is ZFS; that has
always been true of ZFS.</p>
<p>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.<br>
</p>
<div>On 10/27/2022 09:26, Turritopsis
Dohrnii Teo En Ming wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Subject: Does OpenZFS support taking snapshots of
the entire operating system?<br>
<br>
Good day from Singapore,<br>
<br>
Does OpenZFS support taking snapshots of the entire operating
system?<br>
<br>
<br>
</div>
</blockquote>
<div>-- <br>
Karl Denninger<br>
<a href="mailto:karl@denninger.net" target="_blank">karl@denninger.net</a><br>
<i>The Market Ticker</i><br>
<font size="-2"><i>[S/MIME encrypted email preferred]</i></font></div></div></blockquote><div><br></div><div>Noted with thanks Karl.</div><div><br></div><div>Mr. Turritopsis Dohrnii Teo En Ming</div><div>Targeted Individual in Singapore </div></div></div>
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