[yocto] Problems enabling systemd

[Anders Darander]

* Matt Schuckmann <Matt.Schuckmann at planar.com> [150417 23:27]:
> I've got an image for a AM3352 system based on Dylan and Arago and I'm
> trying to switch to systemd for init. 

> So far I haven't had much luck. 
> First off I'm getting different results depending on where I turn it on. 
> I'm turning it on via the following 2 lines: 

> DISTRO_FEATURES_append = " systemd"
> VIRTUAL-RUNTIME_init_manager = "systemd" 

These two lines looks correct, though, if you're building a systemd-only
distro & image, you migth want to add:

DISTRO_FEATURES_BACKFILL_CONSIDERED = "sysvinit"

> If I place these lines in my_image.bb file I seem to get a partial
> install of systemd, systemd_udev is there and seems to run but that's
> about it, there is no systemctrl journalctl and the sysvinit init
> scripts still seem to be called. 

DISTRO_FEATURES is a distro (policy) configuration, and thus, can't be
modfied in a recipe. The correct way would be to add this in your own
my_distro.conf.

> If I place these lines in either local.conf or my_distrobution.conf
> all of the systemd utility seem to get installed and systemd startups
> up but it's clearly not configured correctly. 

Good that it seems to be installed OK.

> For starters the systemd dbus isn't getting created and that seems to
> lead to a whole host of other problems, including journald constant
> spewing the following error messages: 

> [   55.926223] systemd-journald[715]: Failed to write entry, ignoring: Argument list too long
> [   55.936931] systemd-journald[715]: Failed to rotate /run/log/journal/c37feca280b74ec583564afcc2a93f0a/system.journal: No such file or directory
> [   55.950911] systemd-journald[715]: Failed to write entry, ignoring: Argument list too long
> [   55.961580] systemd-journald[715]: Failed to rotate /run/log/journal/c37feca280b74ec583564afcc2a93f0a/system.journal: No such file or directory
> [   55.975568] systemd-journald[715]: Failed to write entry, ignoring: Argument list too long
> [   55.986329] systemd-journald[715]: Failed to rotate /run/log/journal/c37feca280b74ec583564afcc2a93f0a/system.journal: No such file or directory

> I don't know if it matters but this system has no display at all, it's
> a strictly embedded installation. 

That shouldn't really matter, I'm running systemd in headless setups.

I'd guess that you're getting some errors earlier than this in the
bootlog? Could you paste them?

Cheers,
Anders


-- 
Anders Darander
ChargeStorm AB / eStorm AB