[chord] RPC error when filestore in Chord

[zkfzle]

Hi,  
    My enviroment is Redhat 9.0,chord 0.1,sfslite 0.8.13.I made a Chord of 16 vnodes.In vis view,they works well.  
But when I tried to store a file in the ring,I was told as follows:  
( I use adbd as default, use the sock at /tmp/db-sock and db at /var/tmp/db)  

#adbd&  
#lsd -j 192.168.64.7:5555 -p 5555 -v 16  

In another terminal,I input:  
# filestore  /tmp/db-sock -s /home/zkfzle/road.jpg 29e060c70cec89cc568be0ac01c0b5f3c5f19c83  

It displys as follows:  
len 16384 inflight 0  
len 16384 inflight 1  
dhashclient::insert failed (1): e0a45868e9b1cbc1ea6a84996d5913cfa541d691: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 8a16f984d1d8d51b9b92bb675ee3ecd1d0e21379: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 78c6b7775e70a3538e23838ad3b973dd809b3479: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 861e0940078d92cc74ff1b51e984155431d42476: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 6a0f09aa2e14a9199f8401a9cbe131dd17ad4e2b: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): cbdded5cb3902b6bc7bb67d3e38c491bebb1562a: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): fbee81093d9ac615296d732a6209b580580b296e: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 65348a62d4d0caa49135295d93b94f5dbfb5d3a4: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 23af28ef523dd9f6f50a3341c9eca0ab534fabe6: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 85d38f45b18be08ee2303bd1878d145bd7f5f9e2: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): ddc1ae3fec014dfeefa2e46287d76f5b9b6bf317: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 94265195a794cf6aba74197f33d0905adbbd129f: rpc errorRPC: Program unavailable  
bad store  
len 16384 inflight 1  
dhashclient::insert failed (1): 29e060c70cec89cc568be0ac01c0b5f3c5f19c83: rpc errorRPC: Program unavailable  
bad store  
len 14717 inflight 1  
len 300  
p  
len 280  
be8a0cd07cd2aa37b96f39140702126193834225  
dhashclient::insert failed (1): 388b535e3f0d8f970e3d64596e31523d182408ee: rpc errorRPC: Program unavailable  
bad store  
dhashclient::insert failed (1): 902e172a00b14924a19a8d94246ca3374ec8b89a: rpc errorRPC: Program unavailable  
bad store  
dhashclient::insert failed (1): ce64cc8db6b0e29f36895734e867c82195242ab6: rpc errorRPC: Program unavailable  
bad store  
dhashclient::insert failed (1): be8a0cd07cd2aa37b96f39140702126193834225: rpc errorRPC: Program unavailable  
bad store  
In the first terminal which displys the status of the 16 nodes,it shows:  
adbd: EOF from client  
adbd: EOF from client  
adbd: EOF from client  
adbd: EOF from client  
adbd: EOF from client  

Could somebody tell me why?How can I fix it?