linux-kernel - Re: [dm-devel] [PATCH v7 0/2] dm: boot a mapped device without an initramfs

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Date:   Fri, 19 May 2017 09:06:36 +0200
From:   Enric Balletbo Serra <eballetbo@...il.com>
To:     dm-devel@...hat.com
Cc:     linux-doc@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-raid@...r.kernel.org, Alasdair Kergon <agk@...hat.com>,
        linux-lvm@...hat.com, Kees Cook <keescook@...omium.org>,
        Mike Snitzer <snitzer@...hat.com>
Subject: Re: [dm-devel] [PATCH v7 0/2] dm: boot a mapped device without an initramfs

Hi,

2017-05-18 18:29 GMT+02:00 Enric Balletbo i Serra
<enric.balletbo@...labora.com>:
> Dear all,
>
> So here is a new version of the patches to be reviewed, this time as
> suggested by Alasdair the patches are reworked to match with the new
> dmsetup bootformat feature [1]. These patches are not reviewed yet but
> the format was discussed in the IRC and was suggested to send the
> kernel patches in parallel.
>
> Changes since v6:
>  - Add a new function to issue the equivalent of a DM ioctl programatically.
>  - Use the new ioctl interface to create the devices.
>  - Use a comma-delimited and semi-colon delimited dmsetup-like commands.
>
> Changes since v5:
>  - https://www.redhat.com/archives/dm-devel/2016-February/msg00112.html
>
> [1] https://www.redhat.com/archives/linux-lvm/2017-May/msg00047.html
>
> Wating for your feedback,
>
> 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
>
>  Documentation/admin-guide/kernel-parameters.rst |   1 +
>  Documentation/admin-guide/kernel-parameters.txt |   3 +
>  Documentation/device-mapper/dm-boot.txt         |  65 ++++
>  drivers/md/dm-ioctl.c                           |  45 +++
>  include/linux/device-mapper.h                   |   6 +
>  init/Makefile                                   |   1 +
>  init/do_mounts.c                                |   1 +
>  init/do_mounts.h                                |  10 +
>  init/do_mounts_dm.c                             | 459 ++++++++++++++++++++++++
>  9 files changed, 591 insertions(+)
>  create mode 100644 Documentation/device-mapper/dm-boot.txt
>  create mode 100644 init/do_mounts_dm.c
>
> --
> 2.9.3
>
> --
> dm-devel mailing list
> dm-devel@...hat.com
> https://www.redhat.com/mailman/listinfo/dm-devel

Rebasing the patches against current linux-next I just noticied that
there is a build error due commit

commit e516db4f676ac88c7c7f698f8047178e8accc3b8
Author: Mikulas Patocka <mpatocka@...hat.com>
Date:   Fri May 5 11:12:52 2017 -0700

    dm ioctl: add a new DM_DEV_ARM_POLL ioctl

So I'll send v8 to fix this.

Best regards,
  Enric

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