Bug#576247: dmsetup linear mapping fails with /dev/sda as target

[Bastian Blank]

On Thu, Apr 01, 2010 at 10:29:28PM -0700, Michael Barabanov wrote:
> Using a variation of the example table from the dmsetup manpage itself:
> echo 0 1028160 linear /dev/hda 0 | sudo dmsetup create test
> [410296.722225] device-mapper: table: 253:12: linear: dm-linear: Device lookup failed
> [410296.722246] device-mapper: ioctl: error adding target to table

Is the device in question already in use by something else then
device-mapper? For example the kernel-included partition tables or a
mount.

Bastian

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