hspace: also display the starting tiered specs

These are useful for checking what instance specifications we start
with (as they are not necessarily the first entry in the TSPEC map).

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

htools/hspace.hs

@@ -314,6 +314,7 @@ main = do
        maybeSaveData (optSaveCluster opts) "tiered" "after tiered allocation"
                      (ClusterData gl trl_nl trl_il ctags)
 
+       printKeys $ map (\(a, fn) -> ("TSPEC_INI_" ++ a, fn tspec)) specData
        printKeys $ printStats PTiered (Cluster.totalResources trl_nl)
        printKeys [("TSPEC", intercalate " " spec_map')]
        printAllocationStats m_cpu nl trl_nl)

man/hspace.rst

@@ -60,6 +60,11 @@ SPEC_MEM, SPEC_DSK, SPEC_CPU, SPEC_RQN, SPEC_DISK_TEMPLATE
   These represent the specifications of the instance model used for
   allocation (the memory, disk, cpu, requested nodes, disk template).
 
+TSPEC_INI_MEM, TSPEC_INI_DSK, TSPEC_INI_CPU
+  Only defined when the tiered mode allocation is enabled, these are
+  similar to the above specifications but show the initial starting spec
+  for tiered allocation.
+
 CLUSTER_MEM, CLUSTER_DSK, CLUSTER_CPU, CLUSTER_NODES
   These represent the total memory, disk, CPU count and total nodes in
   the cluster.