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Date:      Tue, 20 Jul 2010 14:47:49 +0400
From:      "Andrey V. Elsukov" <bu7cher@yandex.ru>
To:        Michael Gusek <michael.gusek@web.de>
Cc:        freebsd-current@freebsd.org, d@delphij.net
Subject:   Re: Problem with ZFS version 15
Message-ID:  <4C457ED5.1010907@yandex.ru>
In-Reply-To: <1830885268.6104807.1279619519340.JavaMail.fmail@mwmweb017>
References:  <242312022.4636340.1279374040721.JavaMail.fmail@mwmweb017>, <4C44C19C.4080302@delphij.net> <1830885268.6104807.1279619519340.JavaMail.fmail@mwmweb017>

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On 20.07.2010 13:51, Michael Gusek wrote:
>>>> and apply a new bootloader: gpart bootcode -b /boot/pmbr -p
>>>> /boot/gptzfsboot -i 1 ad0|ad1. After this, i've lost my gpt
>>>> scheme ! gpart show ad0 says "gpart: No such geom: ad0". How
>>>> can i recover my gpt on ad0 and ad1 ? I'm running a zfs mirror
>>>> on ad0 and ad1.

It is very strange why this command broke your GPT.
Actually incorrect PMBR can prevent probes for GEOM_PART_GPT.

>> I don't have such a backup, only the whole disk for now. Everything
>> else what can i do ? What if i initialize the gpt header: "gpart
>> create -s GPT ad0" ? Do i lost my data ?

GPT headers and tables will be initialized. After that you should
add all partitions with exactly same offsets and sizes. In this case
your data will not be touched.

--=20
WBR, Andrey V. Elsukov


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