Expand ECA secondary allocation algorithm

modules/chankeep.py

@@ -69,8 +69,15 @@ def emptyChanAllocate(net, flist, relay, new):
         chanfree[0][i] = chanfree[1]
     allocated = {}
     toalloc = len(flist)
+    # toalloc:2148 free:{1: 250} chanlimit:250 correction:2147
     if toalloc > sum(chanfree[0].values()):
-        correction = round(toalloc - sum(chanfree[0].values()) / chanfree[1])
+        sum_free = sum(chanfree[0].values())   # 250
+        chans_not_covered = toalloc - sum_free # 2148 - 250 = 1898
+        relays_needed = chans_not_covered / chanfree[1] # 1898 / 250 = 7.592
+        relays_needed_rounded = round(relays_needed)
+        debug(f"emptyChanAllocate() secondary allocation sum_free:{sum_free} chans_not_covered:{chans_not_covered} relays_needed:{relays_needed} relays_needed_rounded:{relays_needed_rounded}")
+        #correction = round(toalloc - sum(chanfree[0].values()) / chanfree[1])
+        correction = relays_needed_rounded
         debug(f"emptyChanAllocate() not enough free channels: toalloc:{toalloc} free:{chanfree[0]} chanlimit:{chanfree[1]} correction:{correction}")
         warn("Ran out of channel spaces, provisioning additional %i relays for %s" % (correction, net))
         modules.provision.provisionMultipleRelays(net, correction)