Bug#780818: lvm2 should never try to access /dev/mmcblk0rpmb (avoid hangs)

[Daniel Kahn Gillmor <dkg@fifthhorseman.net>]

Control: affects 780818 lvm2 partman-base

On Sat 2015-03-21 07:26:46 -0400, Bastian Blank wrote:
> I don't think it is a bug in lvm to try reading a device.
>
>> lvm is a prime culprit of trying to scan this device, which is just not 
>> going to be helpful to users, since it won't contain a PV.
>
> How does it know that as a fact?
>
> Re-assigning to linux, as it allowes read request on devices not
> supporting it.

I understand that the issue might be caused by the kernel itself.  I'm
noting here that this bug affects both lvm2 (because it causes vgscan to
hang for quite a while, at least) as well as causing the partition
manager during d-i to take ages on any system that has this kind of
device.

        --dkg