Re: [PATCH 0/2] boot to a mapped device

[Helen Koike]

On 9/26/18 2:00 AM, Helen Koike wrote:
> This series is reviving an old patchwork.
> Booting from a mapped device requires an initramfs. This series is
> allows for device-mapper targets to be configured at boot time for
> use early in the boot process (as the root device or otherwise).
> 
> Example, the following could be added in the boot parameters.
> dm="lroot,,,rw, 0 4096 linear 98:16 0, 4096 4096 linear 98:32 0" root=/dev/dm-0
> 
> Enric Balletbo i Serra (1):
>   dm ioctl: add a device mapper ioctl function.
> 
> Will Drewry (1):
>   init: add support to directly boot to a mapped device
> 
>  .../admin-guide/kernel-parameters.rst         |   1 +
>  .../admin-guide/kernel-parameters.txt         |   3 +
>  Documentation/device-mapper/dm-boot.txt       |  63 +++
>  drivers/md/dm-ioctl.c                         |  50 ++
>  include/linux/device-mapper.h                 |   6 +
>  init/Makefile                                 |   1 +
>  init/do_mounts.c                              |   1 +
>  init/do_mounts.h                              |  10 +
>  init/do_mounts_dm.c                           | 475 ++++++++++++++++++
>  9 files changed, 610 insertions(+)
>  create mode 100644 Documentation/device-mapper/dm-boot.txt
>  create mode 100644 init/do_mounts_dm.c
> 

Sorry about sending this email multiple times, my git send-email wans't
properly configured.

Helen