diff --git a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-1.json b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-1.json
index 036822415f24bc5abef23f5cc947e044d8dff2f4..4dec46a8072d883e30778ed63ba392c086473f08 100644
--- a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-1.json
+++ b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-1.json
@@ -24,6 +24,7 @@
       "memory": 5636096000,
       "model": "Tesla M2075",
       "power_default_limit": "225.00 W",
+      "reservation": true,
       "vbios_version": "70.10.46.00.05",
       "vendor": "Nvidia"
     }
diff --git a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-2.json b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-2.json
index c4809a4676aab50a381a880d45cf499249d668a9..e5b3b678e64d8e8ddb15bbeb9a2d2a3c4dacb863 100644
--- a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-2.json
+++ b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-2.json
@@ -24,6 +24,7 @@
       "memory": 5636096000,
       "model": "Tesla M2075",
       "power_default_limit": "225.00 W",
+      "reservation": false,
       "vbios_version": "70.10.46.00.05",
       "vendor": "Nvidia"
     }
diff --git a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-3.json b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-3.json
index b26d0529896817599d82684e4a86eb71ae4b922a..444410c31687aecff2b35a655d9b1a0100eac2c9 100644
--- a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-3.json
+++ b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-3.json
@@ -24,6 +24,7 @@
       "memory": 5636096000,
       "model": "Tesla M2075",
       "power_default_limit": "225.00 W",
+      "reservation": false,
       "vbios_version": "70.10.46.00.05",
       "vendor": "Nvidia"
     }
diff --git a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-4.json b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-4.json
index 9866a6375ea9b61ea73758caf2428cf0d8eb1ada..b05821e329519749f4bbd1b68f64c0eff2556cf7 100644
--- a/data/grid5000/sites/lyon/clusters/orion/nodes/orion-4.json
+++ b/data/grid5000/sites/lyon/clusters/orion/nodes/orion-4.json
@@ -24,6 +24,7 @@
       "memory": 5636096000,
       "model": "Tesla M2075",
       "power_default_limit": "225.00 W",
+      "reservation": false,
       "vbios_version": "70.10.46.00.05",
       "vendor": "Nvidia"
     }