|
 |
ffd055 |
From 1e7a27bd5f463409392d34816a10bf108ee896c6 Mon Sep 17 00:00:00 2001
|
|
|
ffd055 |
From: Jonathan Lebon <jonathan@jlebon.com>
|
|
|
ffd055 |
Date: Fri, 9 Oct 2020 19:44:35 -0400
|
|
|
ffd055 |
Subject: [PATCH] 98dracut-systemd: don't wait for root device if remote
|
|
|
ffd055 |
cryptsetup active
|
|
|
ffd055 |
|
|
|
ffd055 |
This is a plain and simple hack around dependency issues between dracut
|
|
|
ffd055 |
and systemd.
|
|
|
ffd055 |
|
|
|
ffd055 |
When using Tang-pinned LUKS root devices, we want to rely on
|
|
|
ffd055 |
`systemd-cryptsetup@.service` to unlock it. However, that service only
|
|
|
ffd055 |
runs `After=remote-fs-pre.target`, while `dracut-initqueue.service` has
|
|
|
ffd055 |
`Before=remote-fs-pre.target` (which makes sense because we don't want
|
|
|
ffd055 |
to attempt networked root devices before networking is up).
|
|
|
ffd055 |
|
|
|
ffd055 |
However, the rootfs-generator here wants to make sure that the root
|
|
|
ffd055 |
device exists *before* exiting the initqueue via an initqueue/finished
|
|
|
ffd055 |
"devexists" hook. This will never work though because by design
|
|
|
ffd055 |
`systemd-cryptsetup@.service`, which unlocks the root device, won't run
|
|
|
ffd055 |
until after we exit.
|
|
|
ffd055 |
|
|
|
ffd055 |
So we have a dependency cycle:
|
|
|
ffd055 |
|
|
|
ffd055 |
initqueue -> devexists hook -> root device ->
|
|
|
ffd055 |
systemd-cryptsetup@.service -> remote-fs-pre.target -> initqueue
|
|
|
ffd055 |
|
|
|
ffd055 |
There's no clean way to break this. The root issue is that there's no
|
|
|
ffd055 |
way right now to split sequencing of systemd services across the
|
|
|
ffd055 |
initqueue/online and initqueue/finished events because it's all bundled
|
|
|
ffd055 |
in a single service. (The deeper root issue of course is that we have
|
|
|
ffd055 |
two init systems. :) ).
|
|
|
ffd055 |
|
|
|
ffd055 |
Here we do a tactical fix: if there's a `systemd-cryptsetup@.service`
|
|
|
ffd055 |
instance, let's assume it's for the root device and skip waiting for it
|
|
|
ffd055 |
to show up if it depends on `remote-fs-pre.target`.
|
|
|
ffd055 |
|
|
|
ffd055 |
(cherry picked from commit 512c51d2677dd1637cc203e3676fefb50a3d73d0)
|
|
|
ffd055 |
|
|
|
ffd055 |
Resolves: #1897384
|
|
|
ffd055 |
---
|
|
|
ffd055 |
modules.d/98dracut-systemd/rootfs-generator.sh | 11 +++++++++--
|
|
|
ffd055 |
1 file changed, 9 insertions(+), 2 deletions(-)
|
|
|
ffd055 |
|
|
|
ffd055 |
diff --git a/modules.d/98dracut-systemd/rootfs-generator.sh b/modules.d/98dracut-systemd/rootfs-generator.sh
|
|
|
ffd055 |
index 4ae693bb..bb376c0f 100755
|
|
|
ffd055 |
--- a/modules.d/98dracut-systemd/rootfs-generator.sh
|
|
|
ffd055 |
+++ b/modules.d/98dracut-systemd/rootfs-generator.sh
|
|
|
ffd055 |
@@ -13,8 +13,15 @@ generator_wait_for_dev()
|
|
|
ffd055 |
|
|
|
ffd055 |
if ! [ -e "$hookdir/initqueue/finished/devexists-${_name}.sh" ]; then
|
|
|
ffd055 |
|
|
|
ffd055 |
- printf '[ -e "%s" ]\n' $1 \
|
|
|
ffd055 |
- >> "$hookdir/initqueue/finished/devexists-${_name}.sh"
|
|
|
ffd055 |
+ # If a LUKS device needs unlocking via systemd in the initrd, assume
|
|
|
ffd055 |
+ # it's for the root device. In that case, don't block on it if it's
|
|
|
ffd055 |
+ # after remote-fs-pre.target since the initqueue is ordered before it so
|
|
|
ffd055 |
+ # it will never actually show up (think Tang-pinned rootfs).
|
|
|
ffd055 |
+ cat > "$hookdir/initqueue/finished/devexists-${_name}.sh" << EOF
|
|
|
ffd055 |
+if ! grep -q After=remote-fs-pre.target /run/systemd/generator/systemd-cryptsetup@*.service 2>/dev/null; then
|
|
|
ffd055 |
+ [ -e "$1" ]
|
|
|
ffd055 |
+fi
|
|
|
ffd055 |
+EOF
|
|
|
ffd055 |
{
|
|
|
ffd055 |
printf '[ -e "%s" ] || ' $1
|
|
|
ffd055 |
printf 'warn "\"%s\" does not exist"\n' $1
|
|
|
ffd055 |
|