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coreos-secex-ignition-prepare: remount /usr rw if needed #3241

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Nov 6, 2024
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coreos-secex-ignition-prepare: remount /usr rw if needed #3241

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2 changes: 2 additions & 0 deletions ...d/05core/usr/lib/dracut/modules.d/35coreos-ignition/coreos-secex-ignition-prepare.service
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Expand Up @@ -16,5 +16,7 @@ Before=ignition-fetch-offline.service

[Service]
Type=oneshot
# Set to slave so rw remounting of /usr won't be for other units
MountFlags=slave
RemainAfterExit=yes
ExecStart=/usr/sbin/coreos-secex-ignition-prepare
6 changes: 6 additions & 0 deletions overlay.d/05core/usr/lib/dracut/modules.d/35coreos-ignition/coreos-secex-ignition-prepare.sh
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Expand Up @@ -15,6 +15,12 @@ cleanup() {

trap cleanup EXIT

# Fedora 41 comes with systemd-256, where /usr is read-only during initramfs time.
# https://github.com/coreos/ignition/issues/1891
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if [ ! -w /usr ]; then
mount -o rw,remount /usr
fi

# copy base Secure Execution config (enables LUKS+dm-verity for boot and root partitions)
cp /usr/lib/coreos/01-secex.ign /usr/lib/ignition/base.d/01-secex.ign

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