[gentoo-user] systemd and USE="static"

[gentoo-user] systemd and USE="static"

[Neil Bothwick]

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I thought I'd have another look at systemd, so switched profiles, made
sure I had all the kernel options needed and then did an emerge -uN world.

It seems the systemd profile masks the static and static-libs USE flags,
which are needed by crytsetup and lvm for my initramfs, which mounts /
from a LUKS partition. Forcing an unmask of these flags in
/etc/portage/profile did no good because when those packages are built
with USE="static" they require a virtual/udev with matching flags, which
systemd cannot provide.

Is there a way around this or have a I found a reason for not using
systemd that doesn't involve name calling? :-O


-- 
Neil Bothwick

Genius is 99% inspiration and 2% arithmetic

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Re: [gentoo-user] systemd and USE="static"

[Mike Gilbert]

On Thu, Feb 20, 2014 at 4:48 PM, Neil Bothwick <neil@digimed.co.uk> wrote:
> I thought I'd have another look at systemd, so switched profiles, made
> sure I had all the kernel options needed and then did an emerge -uN world.
>
> It seems the systemd profile masks the static and static-libs USE flags,
> which are needed by crytsetup and lvm for my initramfs, which mounts /
> from a LUKS partition. Forcing an unmask of these flags in
> /etc/portage/profile did no good because when those packages are built
> with USE="static" they require a virtual/udev with matching flags, which
> systemd cannot provide.
>
> Is there a way around this or have a I found a reason for not using
> systemd that doesn't involve name calling? :-O
>

I would recommend using an initramfs which includes the necessary
shared libraries. I'm pretty sure dracut and genkernel-next support
this.

If you roll your own initramfs, this isn't terribly difficult either
-- just use ldd to figure out which files you need, and copy them to
/lib or /lib64 in the intiramfs image.

[gentoo-user] Re: systemd and USE="static"

[eroen]

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On Thu, 20 Feb 2014 21:48:01 +0000, Neil Bothwick <neil@digimed.co.uk>
wrote:
> I thought I'd have another look at systemd, so switched profiles, made
> sure I had all the kernel options needed and then did an emerge -uN
> world.
> 
> It seems the systemd profile masks the static and static-libs USE
> flags, which are needed by crytsetup and lvm for my initramfs, which
> mounts / from a LUKS partition. Forcing an unmask of these flags in
> /etc/portage/profile did no good because when those packages are built
> with USE="static" they require a virtual/udev with matching flags,
> which systemd cannot provide.
> 
> Is there a way around this or have a I found a reason for not using
> systemd that doesn't involve name calling? :-O
> 

You are right, systemd dropped support for static libudev (or any other
library for that matter) in version 205.[1] If you want to use systemd
provided libudev for lvm & c. in an initramfs, you'll need to include
the shared library and binaries linked to it.

I believe both dracut and genkernel-next support shared libudev, while
the current versions of genkernel do not (hence why genkernel is masked
on the */systemd profiles). While I have limited experience with
genkernel, dracut has dragged in all the shared libraries I have
required of it.

1:
http://cgit.freedesktop.org/systemd/systemd/commit/?id=5e63ce78b5018ba612e794a610a6f13c5eefade7

-- 
eroen

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Re: [gentoo-user] systemd and USE="static"

[Neil Bothwick]

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On Thu, 20 Feb 2014 16:59:39 -0500, Mike Gilbert wrote:

> > It seems the systemd profile masks the static and static-libs USE
> > flags, which are needed by crytsetup and lvm for my initramfs, which
> > mounts / from a LUKS partition. Forcing an unmask of these flags in
> > /etc/portage/profile did no good because when those packages are built
> > with USE="static" they require a virtual/udev with matching flags,
> > which systemd cannot provide.

> I would recommend using an initramfs which includes the necessary
> shared libraries. I'm pretty sure dracut and genkernel-next support
> this.
> 
> If you roll your own initramfs, this isn't terribly difficult either
> -- just use ldd to figure out which files you need, and copy them to
> /lib or /lib64 in the intiramfs image.

That was the answer. I knocked up a script that ldd'd the files included
in the initramfs and added them to its config file. Thanks.


-- 
Neil Bothwick

WinErr 006: Malicious error - Desqview found on drive

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