linux-kernel - Re: [Bug 37682] New: Kernel mis-detects size/position of partition created with Seagate DiscWizard (OnTrack Disk Manager)

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Date:	Sat, 18 Jun 2011 09:51:17 +0100
From:	markk@...ra.co.uk
To:	"Paul Bolle" <pebolle@...cali.nl>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Bug 37682] New: Kernel mis-detects size/position of partition
 created with Seagate DiscWizard (OnTrack Disk Manager)

Hi,

Paul Bolle wrote:
> On Sat, 2011-06-18 at 03:01 +0200, Paul Bolle wrote:
>> nor could I find the commit(s) that removed it.
>
> That was 232595eaff951e96cabe5e85fed35f66b72ff51e ("ide: remove
> obsoleted "hdx=" kernel parameters"), which was applied in the v2.6.27
> cycle.

Was the feature which that commit removed specific to ide devices? That
is, would it have not applied for a drive connected via a USB/Firewire
bridge?

Ideally the kernel partition-scanning code would be fixed to handle these
strange partitions. As a temporary measure, it might be best to print a
warning and not create the incorrect block device.

E.g. user might think "I'll back up this partition"
  dd if=/dev/sdc1 of=partition.bin
or "I'll wipe this partition before disposing of the disk"
  dd if=/dev/zero of=/dev/sdc1.
Neither has the desired effect.

Mark

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