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Date:      Mon, 3 Oct 2016 08:29:58 +0300
From:      "Andrey V. Elsukov" <bu7cher@yandex.ru>
To:        Zaphod Beeblebrox <zbeeble@gmail.com>, freebsd-fs <freebsd-fs@freebsd.org>, freebsd-emulation@freebsd.org, freebsd-current <freebsd-current@freebsd.org>
Subject:   Re: Trying to read linux-lvm on 11.0-RC2 using geom, bhyve, fail.
Message-ID:  <601197a5-2717-79a7-bdce-95f82d1d819d@yandex.ru>
In-Reply-To: <CACpH0MdSk0KVBNw7a1DPswsUr0JRyFA4i2R7NM6apoZPdG3-Pw@mail.gmail.com>
References:  <CACpH0MdSk0KVBNw7a1DPswsUr0JRyFA4i2R7NM6apoZPdG3-Pw@mail.gmail.com>

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From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
To: Zaphod Beeblebrox <zbeeble@gmail.com>, freebsd-fs
 <freebsd-fs@freebsd.org>, freebsd-emulation@freebsd.org,
 freebsd-current <freebsd-current@freebsd.org>
Message-ID: <601197a5-2717-79a7-bdce-95f82d1d819d@yandex.ru>
Subject: Re: Trying to read linux-lvm on 11.0-RC2 using geom, bhyve, fail.
References: <CACpH0MdSk0KVBNw7a1DPswsUr0JRyFA4i2R7NM6apoZPdG3-Pw@mail.gmail.com>
In-Reply-To: <CACpH0MdSk0KVBNw7a1DPswsUr0JRyFA4i2R7NM6apoZPdG3-Pw@mail.gmail.com>

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On 15.09.2016 08:10, Zaphod Beeblebrox wrote:
> After this fail, I decided I didn't really _need_ to run linux here and=
 I
> discovered 'geom_linux_lvm.ko' ... cool.  But fail, too.  Doesn't emit =
any
> messages.  I even enabled the debug messages for it.
>=20
> The linux disk is partitioned thusly:
>=20
> =3D>        63  1953525105  ada1  MBR  (932G)
>           63        1985        - free -  (993K)
>         2048  1953523120     1  linux-data  [active]  (932G)

Probably it isn't LVM or some modern version, which isn't supported by
module. With enable kern.geom.linux_lvm.debug=3D1 module will complain
only if it will find magic string "LABELONE" in the metadata.
You can check what is stored in the metadata with the following command:
# dd if=3D/dev/ada1s1 count=3D1 | hexdump -vC

--=20
WBR, Andrey V. Elsukov


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