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diff --git a/test/end-to-end/serve-service/serve-archive-root/unresolved-absent-known-upload.sh b/test/end-to-end/serve-service/serve-archive-root/unresolved-absent-known-upload.sh
new file mode 100644
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+++ b/test/end-to-end/serve-service/serve-archive-root/unresolved-absent-known-upload.sh
@@ -0,0 +1,128 @@
+#!/bin/sh
+# Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+###
+# This test checks that an absent root can successfully be made in the presence
+# of the serve endpoint in the situation where we already have the file
+# association (i.e., we know the unresolved root tree) and the serve endpoint
+# does not know the archive. The upload can only happen in native mode.
+#
+# The test archive does not contain symlinks.
+##
+
+set -eu
+
+readonly JUST="${PWD}/bin/tool-under-test"
+readonly JUST_MR="${PWD}/bin/mr-tool-under-test"
+readonly DISTDIR="${TEST_TMPDIR}/distfiles"
+readonly LBR="${TEST_TMPDIR}/local-build-root"
+
+mkdir -p "${DISTDIR}"
+
+COMPAT=""
+if [ "${COMPATIBLE:-}" = "YES" ]; then
+  COMPAT="--compatible"
+fi
+
+ENDPOINT_ARGS="-r ${REMOTE_EXECUTION_ADDRESS} -R ${SERVE} ${COMPAT}"
+
+###
+# Setup sample repos config with present and absent repos
+##
+
+cp src.tar "${DISTDIR}"
+HASH=$(git hash-object src.tar)
+
+mkdir work
+cd work
+
+touch ROOT
+cat > repos.json <<EOF
+{ "repositories":
+  { "present":
+    { "repository":
+      { "type": "archive"
+      , "content": "$HASH"
+      , "fetch": "http://example.org/src.tar"
+      , "subdir": "repo"
+      }
+    }
+  , "absent":
+    { "repository":
+      { "type": "archive"
+      , "content": "$HASH"
+      , "fetch": "http://example.org/src.tar"
+      , "subdir": "repo"
+      , "pragma": {"absent": true}
+      }
+    }
+  }
+}
+EOF
+
+###
+# Run the checks
+##
+
+# Compute present root locally from scratch (via distfile)
+CONF=$("${JUST_MR}" --norc -C repos.json \
+                    --just "${JUST}" \
+                    --local-build-root "${LBR}" \
+                    --distdir "${DISTDIR}" \
+                    --log-limit 6 \
+                    setup present)
+cat "${CONF}"
+echo
+TREE=$(jq -r '.repositories.present.workspace_root[1]' "${CONF}")
+
+# Remove the distdir
+rm -rf "${DISTDIR}"
+
+# While keeping the file association, ask serve endpoint to provide the root as
+# absent. For a serve endpoint that does not have the archive blob available,
+# this will require uploading the locally-known root tree to remote CAS, from
+# where the serve endpoint will pick it up. This can only happen in native mode.
+if [ -z "${COMPAT}" ]; then
+
+  ${JUST} gc --local-build-root ${LBR} 2>&1
+  ${JUST} gc --local-build-root ${LBR} 2>&1
+
+  CONF=$("${JUST_MR}" --norc -C repos.json \
+                      --just "${JUST}" \
+                      --local-build-root "${LBR}" \
+                      --log-limit 6 \
+                      ${ENDPOINT_ARGS} setup absent)
+  cat "${CONF}"
+  echo
+  test $(jq -r '.repositories.absent.workspace_root[1]' "${CONF}") = "${TREE}"
+
+else
+
+  echo ---
+  echo Checking expected failures
+
+  ${JUST} gc --local-build-root ${LBR} 2>&1
+  ${JUST} gc --local-build-root ${LBR} 2>&1
+
+  "${JUST_MR}" --norc -C repos.json \
+               --just "${JUST}" \
+               --local-build-root "${LBR}" \
+               --log-limit 6 \
+               ${ENDPOINT_ARGS} setup absent 2>&1 && exit 1 || :
+  echo Failed as expected
+fi
+
+echo OK