Public bug reported:
The last lines of /usr/share/initramfs-tools/scripts/init-premount/mandos are
elif [ -x /usr/bin/cryptroot-unlock ]; then
setsid /lib/mandos/mandos-to-cryptroot-unlock &
fi
As setsid is not present in the initramfs this premount script fails.
Tested on a fresh install of 20.04.
Workaround to solve this problem was to create a hook in
/etc/initramfs-tools/hooks/
which simply does
cp -a /usr/bin/setsid $DESTDIR/bin/setsid
PS: Package was mandos-client not mandos (server), but form states -
"mandos-client" does not exist in Ubuntu
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mandos-client 1.8.9-2
ProcVersionSignature: Ubuntu 5.4.0-74.83-generic 5.4.114
Uname: Linux 5.4.0-74-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Jun 8 18:53:16 2021
SourcePackage: mandos
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.mandos.plugin-runner.conf: [modified]
mtime.conffile..etc.mandos.plugin-runner.conf: 2021-06-08T18:19:25.887512
** Affects: mandos (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1931287
Title:
mandos premount script needs setsid which is not in initrd
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