From 0b79f8d8d19be83a81e40b0c078822be6749f607 Mon Sep 17 00:00:00 2001 From: Carlos Alberto Lopez Perez Date: Thu, 31 Aug 2017 14:23:35 +0200 Subject: [PATCH] initramfs-live-boot: disable systemd-update-done.service on live images When systemd is used, it will invoke a service on first boot that triggers a rebuild of ldconfig caches (rebuild dynamic linker cache). This is fine on the first boot of a system that has been installed, but it makes no sense on a live system. The worst part is that rebuilding this caches is slow and it causes the live system to take longer to boot. (I measured this in 30 seconds longer on a standard PC system booting core-image-sato live from an USB memory). Disable this by touching /etc/.updated and /var/.updated on the live initramfs. For more details see https://bugzilla.redhat.com/show_bug.cgi?id=1201725 and https://www.freedesktop.org/software/systemd/man/systemd-update-done.service.html (From OE-Core rev: d73493e63c506dca0e767ff183ca36bc48c2f03e) Signed-off-by: Carlos Alberto Lopez Perez Signed-off-by: Ross Burton Signed-off-by: Richard Purdie --- meta/recipes-core/initrdscripts/files/init-live.sh | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/meta/recipes-core/initrdscripts/files/init-live.sh b/meta/recipes-core/initrdscripts/files/init-live.sh index 441b41c9d6..46cab6cc77 100644 --- a/meta/recipes-core/initrdscripts/files/init-live.sh +++ b/meta/recipes-core/initrdscripts/files/init-live.sh @@ -84,6 +84,10 @@ boot_live_root() { # device node creation events were handled, to avoid unexpected behavior killall -9 "${_UDEV_DAEMON##*/}" 2>/dev/null + # Don't run systemd-update-done on systemd-based live systems + # because it triggers a slow rebuild of ldconfig caches. + touch ${ROOT_MOUNT}/etc/.updated ${ROOT_MOUNT}/var/.updated + # Allow for identification of the real root even after boot mkdir -p ${ROOT_MOUNT}/media/realroot mount -n --move "/run/media/${ROOT_DISK}" ${ROOT_MOUNT}/media/realroot