Date: Tue, 11 Apr 2023 18:35:40 +0100 From: Graham Perrin <grahamperrin@freebsd.org> To: Warner Losh <imp@bsdimp.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: gpart destroy, in depth Message-ID: <519b5387-4561-94a1-f2e1-6fe6c4a4f35e@freebsd.org> In-Reply-To: <CANCZdfoZexT2ddX_YocTW9u-qhaD6nWoTtFd5xMWqNTbdtwWSA@mail.gmail.com> References: <64e88636-1e03-7ff5-7d3f-e8a36117cdbe@freebsd.org> <CANCZdfoZexT2ddX_YocTW9u-qhaD6nWoTtFd5xMWqNTbdtwWSA@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--------------esgQ6W4xJg61g3ZGvhVjs5XT
Content-Type: multipart/mixed; boundary="------------Ev00wvEXl3XbZCKAeeyKdE0x";
protected-headers="v1"
From: Graham Perrin <grahamperrin@freebsd.org>
To: Warner Losh <imp@bsdimp.com>
Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>
Message-ID: <519b5387-4561-94a1-f2e1-6fe6c4a4f35e@freebsd.org>
Subject: Re: gpart destroy, in depth
References: <64e88636-1e03-7ff5-7d3f-e8a36117cdbe@freebsd.org>
<CANCZdfoZexT2ddX_YocTW9u-qhaD6nWoTtFd5xMWqNTbdtwWSA@mail.gmail.com>
In-Reply-To: <CANCZdfoZexT2ddX_YocTW9u-qhaD6nWoTtFd5xMWqNTbdtwWSA@mail.gmail.com>
--------------Ev00wvEXl3XbZCKAeeyKdE0x
Content-Type: multipart/alternative;
boundary="------------mXhEaQsKUoxGdwtVYyQh0wmE"
--------------mXhEaQsKUoxGdwtVYyQh0wmE
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: base64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--------------mXhEaQsKUoxGdwtVYyQh0wmE
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<html data-lt-installed=3D"true">
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DUTF=
-8">
<script data-cookieconsent=3D"ignore" src=3D"moz-extension://29fb402e=
-105a-42a3-9cdf-d9151b2bcb17/content/executor.js"></script>
</head>
<body style=3D"padding-bottom: 1px;">
<p>On 11/04/2023 14:24, Warner Losh wrote:<br>
</p>
<blockquote type=3D"cite"
cite=3D"mid:CANCZdfoZexT2ddX_YocTW9u-qhaD6nWoTtFd5xMWqNTbdtwWSA@mail.gmai=
l.com">
<meta http-equiv=3D"content-type" content=3D"text/html; charset=3DU=
TF-8">
<div dir=3D"auto">It writes zeros to the partition table.
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">Warner</div>
</div>
</blockquote>
<p><br>
</p>
<p>Thanks. <br>
</p>
<p>Is it precise about where it ceases writing zeros in the areas
previously occupied by the table and backup table?</p>
<p>Or does it (for want of a better expression) spill over, a
little?<br>
</p>
<blockquote type=3D"cite"
cite=3D"mid:CANCZdfoZexT2ddX_YocTW9u-qhaD6nWoTtFd5xMWqNTbdtwWSA@mail.gmai=
l.com"><br>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Apr 11, 2023, 7:13 =
AM
Graham Perrin <<a href=3D"mailto:grahamperrin@freebsd.org"
moz-do-not-send=3D"true" class=3D"moz-txt-link-freetext">grah=
amperrin@freebsd.org</a>>
wrote:<br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Please:
what, exactly, occurs when a partition table is destroyed by <b=
r>
gpart(8)?<br>
<br>
Background: =E2=80=A6<br>
</blockquote>
</div>
</blockquote>
</body>
<lt-container></lt-container>
</html>
--------------mXhEaQsKUoxGdwtVYyQh0wmE--
--------------Ev00wvEXl3XbZCKAeeyKdE0x--
--------------esgQ6W4xJg61g3ZGvhVjs5XT
Content-Type: application/pgp-signature; name="OpenPGP_signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="OpenPGP_signature"
-----BEGIN PGP SIGNATURE-----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=YrrA
-----END PGP SIGNATURE-----
--------------esgQ6W4xJg61g3ZGvhVjs5XT--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?519b5387-4561-94a1-f2e1-6fe6c4a4f35e>
