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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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
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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Thu, 27 Oct 2022 at 21:30, Karl De=
nninger <<a href=3D"mailto:karl@denninger.net">karl@denninger.net</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">
=20
=20
=20
<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 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.<br>
</p>
<div>On 10/27/2022 09:26, Turritopsis
Dohrnii Teo En Ming wrote:<br>
</div>
<blockquote type=3D"cite">
=20
<div dir=3D"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=3D"mailto:karl@denninger.net" target=3D"_blank">karl@denninge=
r.net</a><br>
<i>The Market Ticker</i><br>
<font size=3D"-2"><i>[S/MIME encrypted email preferred]</i></font></d=
iv></div></blockquote><div><br></div><div>Noted with thanks Karl.</div><div=
><br></div><div>Mr. Turritopsis Dohrnii Teo En Ming</div><div>Targeted Indi=
vidual in Singapore=C2=A0</div></div></div>
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