There is no secondary storage VM for secondary storage host

[Water Duan]

hi
    i've just setup a cloudstack, but when i add an instance, i can not add
template or iso.
    the secondary storage host nfs service is absolutely no problem. and
s-1-VM  v-2-VM is running.
    how can i solve this stupid problem?


############management-server.log#############

2013-05-10 15:29:14,565 DEBUG
[storage.secondary.SecondaryStorageManagerImpl] (secstorage-1:null) Zone 1
is ready to launch secondary storage VM
2013-05-10 15:29:14,680 DEBUG [cloud.consoleproxy.ConsoleProxyManagerImpl]
(consoleproxy-1:null) Zone 1 is ready to launch console proxy
2013-05-10 15:29:15,123 DEBUG
[network.router.VirtualNetworkApplianceManagerImpl]
(RouterStatusMonitor-1:null) Found 0 routers.
2013-05-10 15:29:32,612 DEBUG [cloud.server.StatsCollector]
(StatsCollector-1:null) VmStatsCollector is running...
2013-05-10 15:29:37,372 DEBUG [cloud.server.StatsCollector]
(StatsCollector-1:null) StorageCollector is running...
2013-05-10 15:29:37,377 DEBUG [cloud.server.StatsCollector]
(StatsCollector-1:null) There is no secondary storage VM for secondary
storage host nfs://172.16.10.1/secondary
2013-05-10 15:29:37,463 DEBUG [agent.transport.Request]
(StatsCollector-1:null) Seq 1-303628376: Received:  { Ans: , MgmtId:
159090353424133, via: 1, Ver: v1, Flags: 10, { GetStorageStatsAnswer } }