Symptom:
Occassionally during n1k install / config, some of the MTS buffer queues aren't which caused ipqos manager to not be able to provide qos stats

switch# show system internal mts buffers summary
node    sapno   recv_q  pers_q  npers_q log_q
sup     284     0       6       0       0


correct behavior is to have output like below

N1K# show system internal mts buffers summary
node    sapno   recv_q  pers_q  npers_q log_q
sup     284     0       6       0       0
sup     273     2       0       0       0
sup     268     2       0       0       0
sup     267     2       0       0       0
sup     250     2       0       0       0
sup     428     2       0       0       0  <<====== needed to qos stats
N1K#

Conditions:
QoS is setup as per white paper below

http://www.cisco.com/c/en/us/products/collateral/switches/nexus-1000v-switch-vmware-vsphere/white_paper_c11-704041.html

I was able to reproduce issue in the lab