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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: LVM support
Date: Tue, 19 May 2015 12:32:44 +0200
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Tom=C3=A1=C5=A1 =C4=8Cech <sleep_walker@gnu.org> skribis:

> On Sun, May 03, 2015 at 09:59:53PM +0200, Ludovic Court=C3=A8s wrote:

[...]

>>Could you send an updated patch?  It sounds like we=E2=80=99re almost the=
re,
>>I guess.
>
> Not there yet. Now I need to make some changes with mounting order to help
> non-root filesystems on LVM volume.
>
> Right now it seems it tries to:
> 1] mount all filesystems
> 2] run udev

Right.

> But I need to make it:
> 1] mount /dev
> 2] run udev service (with the `udevadm settle' in the end)
> 3] mount the rest of filesystems

OK.

Note that =E2=80=98file-system-service=E2=80=99 has a #:requirements parame=
ter, which is
where we could pass '(udev).  But maybe some of the file systems defined
in (gnu system file-systems) need to be mounted before udev is started.
You=E2=80=99ll have to try.  ;-)

> It seems that /sys and /proc is mounted already from initrd phase using
> mount-essential-file-systems. Is there reason not to put /dev there as we=
ll?

The reason to do it this way is that it avoids another special case.
That said, in practice /dev is mounted from the initrd because
%devtmpfs-file-system has =E2=80=98needed-for-boot?=E2=80=99 set.

> I see none so I'll try to add /dev filesystem mounting there (and to
> move-essential-file-systems) and remove it from %base-file-systems.

I don=E2=80=99t think this is necessary.

Thanks,
Ludo=E2=80=99.