swtpm keeps its state on the ESP (--tpmstate=dir=) and thus holds it
busy for as long as it runs, but nothing ensured it was stopped before
the ESP was unmounted on shutdown, leaving boot.mount failing to
unmount.
Two things were missing:
- systemd-tpm2-swtpm.service has DefaultDependencies=no, which strips
the implicit shutdown.target membership, so it was torn down late
rather than stopped in an ordered manner. Add
Conflicts=/Before=shutdown.target, as the sibling
systemd-tpm2-setup{,-early}.service units already do.
- The generator only ordered the service
After=boot.automount/efi.automount. Ordering after the .automount
units is enough for start-up, but only an ordering against the actual
.mount units makes the service stop (releasing the ESP) before the
file system is unmounted. Add boot.mount/efi.mount to the After= line;
this is a no-op at start-up, as the mount has no job of its own there
(it is triggered on access via the automount).
Signed-off-by: Paul Meyer <katexochen0@gmail.com>
System and Service Manager
Details
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