From: Pavel Goran <via-bcache@pvgoran.name>
To: linux-bcache@vger.kernel.org
Subject: Re: cannot attach backing device, wipefs does not fix it
Date: Wed, 18 Jun 2014 23:01:48 +0700 [thread overview]
Message-ID: <1297031660.20140618230148@pvgoran.name> (raw)
In-Reply-To: <loom.20140618T173307-560@post.gmane.org>
Hello Erik,
Wednesday, June 18, 2014, 10:38:55 PM, you wrote:
> Hi, ubuntu 14.04, and a 5TB RAID (sdc) partitioned into two 2.5TB partitions
> (sdc1 and sdc2) with parted to be used as backing devices,
> /dev/sdc2 attaches fine
> problem with sdc1:
> # make-bcache -B /dev/sdc1
> Device /dev/sdc1 already has a non-bcache superblock, remove it using wipefs
> and wipefs -a
> # wipefs /dev/sdc1
> wipefs: WARNING: /dev/sdc1: appears to contain 'dos' partition table
> # wipefs -a /dev/sdc1
> wipefs: WARNING: /dev/sdc1: appears to contain 'dos' partition table
Did you try wipefs -a -f /dev/sdc1 ?
If that fails, just erase the first few MB of the device with zeroes:
dd if=/dev/zero of=/dev/sdc1 bs=1M count=10
Pavel Goran
next prev parent reply other threads:[~2014-06-18 16:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-18 15:38 cannot attach backing device, wipefs does not fix it Erik Hjelmås
2014-06-18 16:01 ` Pavel Goran [this message]
2014-06-18 17:11 ` Erik Hjelmås
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