From: Hullen@t-online.de (Helmut Hullen)
To: linux-btrfs@vger.kernel.org
Subject: Re: Interpreting Output of "btrfs fi show"
Date: 26 Apr 2012 13:11:00 +0200 [thread overview]
Message-ID: <C7$h9m5PCXB@helmut.hullen.de> (raw)
In-Reply-To: <CAGy7UtioPbdjomzuv3phZcF+HShyYKytkOKnAhP+4VGj29Aahg@mail.gmail.com>
Hallo, Bart,
Du meintest am 26.04.12:
>>> As for the two filesystems shown in btrfs fi show... I have no clue
>>> what that is about. Did you maybe make a mistake to create a btrfs
>>> filesystem on the whole disk at first?
>> That is possible. But afterwards I certainly repartioned the device
>> and created a btrfs filesystem on /dev/sda1. Maybe this info is only
>> in the partition table? I understand that I should avoid mounting
>> /dev/sda in this situation.
> Well I think there is a btrfs superblock still present from the
> full-disk filesystem. Due to the offset of the first partition from
> the start of the disk, this superblock was not overwritten when you
> created the filesystem inside the partition.
Sounds familiar ...
I now use to delete about the first 10 MByte of the target disk via "dd
if=/dev/zero"
Viele Gruesse!
Helmut
next prev parent reply other threads:[~2012-04-26 11:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 2:34 Interpreting Output of "btrfs fi show" Thomas Rohwer
2012-04-26 8:34 ` Bart Noordervliet
2012-04-26 9:06 ` Thomas Rohwer
2012-04-26 10:04 ` Bart Noordervliet
2012-04-26 10:14 ` Thomas Rohwer
2012-04-26 11:11 ` Helmut Hullen [this message]
2012-04-26 11:53 ` David Sterba
2012-04-26 13:59 ` Helmut Hullen
2012-04-26 20:54 ` Duncan
2012-04-28 16:42 ` Hubert Kario
2012-04-29 4:15 ` Duncan
2012-04-30 17:03 ` Hubert Kario
2012-04-29 18:34 ` Hugo Mills
2012-04-29 6:13 ` Martin Steigerwald
2012-04-30 17:10 ` Hubert Kario
2012-04-30 18:12 ` Mike Fleetwood
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