loading more

packages/tracker/meshnet_tracker/dashboard.html

@@ -332,6 +332,7 @@
     <div id="model-placement-dialog-title"></div>
     <label for="model-placement-node">Node</label>
     <select id="model-placement-node"></select>
+    <label id="model-placement-replace" style="display:none"><input type="checkbox" id="model-placement-replace-confirm"> Unload the currently loaded model before loading this one</label>
     <div class="placement-dialog-actions"><button value="cancel">Cancel</button><button value="confirm">Confirm</button></div>
   </form>
 </dialog>
@@ -1812,8 +1813,8 @@ async function requestSelectedModelLoad() {
   $("chat-status").textContent = `load queued on ${short(assignment.node_id || "node")} for layers ${assignment.shard_start}-${assignment.shard_end}`;
 }
 
-async function requestAdminModelLoad(model, nodeId) {
-  const result = await apiCall("/v1/models/load", "POST", { model, node_id: nodeId, force: true });
+async function requestAdminModelLoad(model, nodeId, replacing) {
+  const result = await apiCall("/v1/models/load", "POST", { model, node_id: nodeId, force: replacing });
   if (!result.ok) return showAdminModelPlacementStatus(result.data.error || "model load request failed", true);
   const assignment = result.data.assignment || {};
   showAdminModelPlacementStatus(`Load queued on ${short(assignment.node_id || "node")} for ${model}.`);
@@ -1887,14 +1888,31 @@ $("admin-model-placement").addEventListener("click", event => {
 function chooseModelPlacementNode(action, model) {
   const dialog = $("model-placement-dialog");
   const select = $("model-placement-node");
-  const aliases = new Set([model].filter(Boolean));
-  const nodes = (lastNetworkMap?.nodes || []).filter(node => action === "load" || aliases.has(node.model) || aliases.has(node.hf_repo));
+  const targetAlias = modelAliasKey(model);
+  const nodes = (lastNetworkMap?.nodes || []).filter(node => action === "load" ||
+    modelAliasKey(node.model) === targetAlias || modelAliasKey(node.hf_repo) === targetAlias);
   if (!nodes.length) return showAdminModelPlacementStatus(`No node can ${action} ${model}.`, true);
   $("model-placement-dialog-title").textContent = `${action === "load" ? "Load" : "Release"} ${model} on a node`;
   select.innerHTML = nodes.map(node => `<option value="${esc(node.node_id)}">${esc(short(node.friendly_name || node.node_id, 20))} — ${esc(node.hf_repo || node.model || "unassigned")}</option>`).join("");
+  const replace = $("model-placement-replace");
+  const replaceConfirm = $("model-placement-replace-confirm");
+  const selectedNode = () => nodes.find(node => node.node_id === select.value);
+  const updateReplacementWarning = () => {
+    const node = selectedNode();
+    const occupied = action === "load" && node && node.shard_start != null && node.shard_end != null &&
+      modelAliasKey(node.hf_repo || node.model) !== targetAlias;
+    replace.style.display = occupied ? "" : "none";
+    replaceConfirm.checked = false;
+  };
+  select.onchange = updateReplacementWarning;
+  updateReplacementWarning();
   dialog.onclose = () => {
     if (dialog.returnValue !== "confirm") return;
-    if (action === "load") void requestAdminModelLoad(model, select.value);
+    const replacing = replace.style.display !== "none";
+    if (replacing && !replaceConfirm.checked) {
+      return showAdminModelPlacementStatus("Confirm unloading the existing model before replacing it.", true);
+    }
+    if (action === "load") void requestAdminModelLoad(model, select.value, replacing);
     else void releaseAdminModel(model, select.value);
   };
   dialog.showModal();

packages/tracker/meshnet_tracker/server.py

@@ -1535,7 +1535,9 @@ def _request_model_load_locked(
     return None
 
 
-def _force_model_load_locked(server: "_TrackerHTTPServer", model_key: str) -> dict | None:
+def _force_model_load_locked(
+    server: "_TrackerHTTPServer", model_key: str, node_id: str | None = None,
+) -> dict | None:
     """Replace the fastest ready assignment after an explicit admin eviction."""
     resolved_name, preset = _resolve_model_preset(server.model_presets, model_key)
     if preset is None or not preset.get("hf_repo"):
@@ -1544,8 +1546,11 @@ def _force_model_load_locked(server: "_TrackerHTTPServer", model_key: str) -> di
     # An explicit admin eviction is permitted to recover a stuck/loading node
     # and to use the preset default precision. It must only avoid a node that
     # already has another assignment in flight.
-    candidates = [node for node in server.registry.values()
-                  if node.pending_new_assignment is None]
+    candidates = [
+        node for node in server.registry.values()
+        if node.pending_new_assignment is None
+        and (node_id is None or node.node_id == node_id)
+    ]
     if not candidates:
         return None
     node = max(candidates, key=lambda item: item.benchmark_tokens_per_sec)
@@ -4917,8 +4922,8 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
         with server.lock:
             self._purge_expired_nodes()
             assignment = _request_model_load_locked(server, model, node_id)
-            if assignment is None and node_id is None and body.get("force") is True:
-                assignment = _force_model_load_locked(server, model)
+            if assignment is None and body.get("force") is True:
+                assignment = _force_model_load_locked(server, model, node_id)
         if assignment is None:
             self._send_json(409, {"error": "no ready joined node has an available model slot and sufficient capacity"})
             return

tests/test_dashboard.py

@@ -126,6 +126,9 @@ def test_dashboard_exposes_admin_model_inventory_and_release_controls():
     assert 'id="model-placement-dialog"' in html
     assert "chooseModelPlacementNode" in html
     assert "node_id: nodeId" in html
+    assert "modelAliasKey(node.model)" in html
+    assert 'id="model-placement-replace"' in html
+    assert "force: replacing" in html
 
 
 def test_network_map_includes_node_friendly_name():

tests/test_dynamic_routing.py

@@ -370,7 +370,11 @@ def test_admin_can_replace_a_served_model_and_release_it():
         headers = {"Content-Type": "application/json", "Authorization": "Bearer test-admin"}
         load = urllib.request.Request(
             f"http://127.0.0.1:{port}/v1/models/load",
-            data=json.dumps({"model": "qwen2.5-0.5b-instruct", "force": True}).encode(),
+            data=json.dumps({
+                "model": "qwen2.5-0.5b-instruct",
+                "node_id": node["node_id"],
+                "force": True,
+            }).encode(),
             headers=headers, method="POST")
         with urllib.request.urlopen(load) as response:
             assert json.loads(response.read())["assignment"]["node_id"] == node["node_id"]