From 7e5124a44c8d589b2dffc1d083653dc3b084d082 Mon Sep 17 00:00:00 2001 From: Alex Kiernan Date: Wed, 8 May 2019 16:57:26 +0100 Subject: systemd: Default to non-stateless images When creating images, for anything other than the explicitly stateless case, touch /etc/machine-id so that the images can be booted without an initramfs and with `ro` set on the kernel command line, otherwise system refuses to start: [ 7.222134] systemd[1]: No hostname configured. [ 7.227266] systemd[1]: Set hostname to . [ 7.232622] systemd[1]: System cannot boot: Missing /etc/machine-id and /etc is mounted read-only. [ 7.241750] systemd[1]: Booting up is supported only when: [ 7.247362] systemd[1]: 1) /etc/machine-id exists and is populated. [ 7.253752] systemd[1]: 2) /etc/machine-id exists and is empty. [ 7.259757] systemd[1]: 3) /etc/machine-id is missing and /etc is writable. If IMAGE_FEATURES includes `stateless-rootfs` then systemctl-native is not run on the image leaving the image for population at runtime by systemd. (From OE-Core rev: c5fb399f5894c16cf8eeadd507dc38c29b0fd657) Signed-off-by: Alex Kiernan Signed-off-by: Richard Purdie --- meta/recipes-core/systemd/systemd-systemctl/systemctl | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'meta/recipes-core/systemd') diff --git a/meta/recipes-core/systemd/systemd-systemctl/systemctl b/meta/recipes-core/systemd/systemd-systemctl/systemctl index d7d4e0d29a..7fdaf8ce03 100755 --- a/meta/recipes-core/systemd/systemd-systemctl/systemctl +++ b/meta/recipes-core/systemd/systemd-systemctl/systemctl @@ -241,6 +241,15 @@ def preset_all(root): if state == "enable" or state is None: enable(root, service, location, services) + # If we populate the systemd links we also create /etc/machine-id, which + # allows systemd to boot with the filesystem read-only before generating + # a real value and then committing it back. + # + # For the stateless configuration, where /etc is generated at runtime + # (for example on a tmpfs), this script shouldn't run at all and we + # allow systemd to completely populate /etc. + (root / SYSCONFDIR / "machine-id").touch() + def mask(root, *services): systemdir = root / SYSCONFDIR / "systemd" / "system" -- cgit v1.2.3-54-g00ecf