Netbackup in windows 2008 always keep writing when doing backup

[liusibo]

I'm using 3 physical machines running windows 2008r2 system to do some Netbackup7.6.1 test work.

I installed master server/media server/client server separatly in these 3 machines.And now I meet some problems.

when I create a policy to do some file or folder backup,the backup state keeps writing for several hours and never successful done.

I try some methods to troubleshoot，but has no effect：

add the client and server name/IP into host file

add the client and server name into the registry

I can surely confirm the network is ok between the 3 machines，can any one help me？

these is the status log：

4/7/2016 4:06:47 AM - Info bpbrm(pid=1000) nbuclient is the host to backup data from     
4/7/2016 4:06:47 AM - Info bpbrm(pid=1000) reading file list for client        
4/7/2016 4:06:50 AM - Info bpbrm(pid=1000) starting bpbkar32 on client         
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) starting backup job (jobid=23) for client nbuclient, policy po01, schedule Full  
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=23, request id:{C64346D1-164B-437E-84E0-D086C8C2D111})  
4/7/2016 4:06:55 AM - requesting resource LUN01
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource MediaID=@aaaab;Path=E:\LUN01;MediaServer=nbumedia
4/7/2016 4:06:55 AM - granted resource LUN01
4/7/2016 4:06:55 AM - estimated 0 Kbytes needed
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) started backup (backupid=nbuclient_1460027215) job for client nbuclient, policy po01, schedule Full on storage unit LUN01
4/7/2016 4:06:57 AM - started process bpbrm (1000)
4/7/2016 4:06:59 AM - connecting
4/7/2016 4:06:51 AM - Info bpbkar32(pid=4896) Backup started           
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) starting backup job (jobid=23) for client nbuclient, policy po01, schedule Full  
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=23, request id:{C64346D1-164B-437E-84E0-D086C8C2D111})  
4/7/2016 4:06:55 AM - requesting resource LUN01
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource MediaID=@aaaab;Path=E:\LUN01;MediaServer=nbumedia
4/7/2016 4:06:55 AM - granted resource LUN01
4/7/2016 4:06:55 AM - estimated 0 Kbytes needed
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) started backup (backupid=nbuclient_1460027215) job for client nbuclient, policy po01, schedule Full on storage unit LUN01
4/7/2016 4:06:57 AM - started process bpbrm (1000)
4/7/2016 4:06:59 AM - connecting
4/7/2016 4:06:51 AM - Info bpbkar32(pid=4896) change time comparison:<disabled>          
4/7/2016 4:06:51 AM - Info bpbkar32(pid=4896) archive bit processing:<enabled>          
4/7/2016 4:06:51 AM - Info bptm(pid=964) start            
4/7/2016 4:06:51 AM - Info bptm(pid=964) using 262144 data buffer size        
4/7/2016 4:06:51 AM - Info bptm(pid=964) setting receive network buffer to 1049600 bytes      
4/7/2016 4:06:51 AM - Info bptm(pid=964) using 30 data buffers         
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) starting backup job (jobid=23) for client nbuclient, policy po01, schedule Full  
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=23, request id:{C64346D1-164B-437E-84E0-D086C8C2D111})  
4/7/2016 4:06:55 AM - requesting resource LUN01
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource MediaID=@aaaab;Path=E:\LUN01;MediaServer=nbumedia
4/7/2016 4:06:55 AM - granted resource LUN01
4/7/2016 4:06:55 AM - estimated 0 Kbytes needed
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) started backup (backupid=nbuclient_1460027215) job for client nbuclient, policy po01, schedule Full on storage unit LUN01
4/7/2016 4:06:57 AM - started process bpbrm (1000)
4/7/2016 4:06:59 AM - connecting
4/7/2016 4:06:52 AM - Info bpbkar32(pid=4896) not using change journal data for <D:\Networker>: not enabled    
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) starting backup job (jobid=23) for client nbuclient, policy po01, schedule Full  
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=23, request id:{C64346D1-164B-437E-84E0-D086C8C2D111})  
4/7/2016 4:06:55 AM - requesting resource LUN01
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource MediaID=@aaaab;Path=E:\LUN01;MediaServer=nbumedia
4/7/2016 4:06:55 AM - granted resource LUN01
4/7/2016 4:06:55 AM - estimated 0 Kbytes needed
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) started backup (backupid=nbuclient_1460027215) job for client nbuclient, policy po01, schedule Full on storage unit LUN01
4/7/2016 4:06:57 AM - started process bpbrm (1000)
4/7/2016 4:06:59 AM - connecting
4/7/2016 4:06:52 AM - Info bptm(pid=964) start backup           
4/7/2016 4:06:52 AM - Info bpbkar32(pid=4896) not using change journal data for <D:\smalltexttest\test.txt>: not enabled    
4/7/2016 4:06:52 AM - Info bptm(pid=964) backup child process is pid 892.4016       
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) starting backup job (jobid=23) for client nbuclient, policy po01, schedule Full  
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=23, request id:{C64346D1-164B-437E-84E0-D086C8C2D111})  
4/7/2016 4:06:55 AM - requesting resource LUN01
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource MediaID=@aaaab;Path=E:\LUN01;MediaServer=nbumedia
4/7/2016 4:06:55 AM - granted resource LUN01
4/7/2016 4:06:55 AM - estimated 0 Kbytes needed
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) started backup (backupid=nbuclient_1460027215) job for client nbuclient, policy po01, schedule Full on storage unit LUN01
4/7/2016 4:06:57 AM - started process bpbrm (1000)
4/7/2016 4:06:59 AM - connecting
4/7/2016 4:06:52 AM - Info bptm(pid=892) start            
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) starting backup job (jobid=23) for client nbuclient, policy po01, schedule Full  
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=23, request id:{C64346D1-164B-437E-84E0-D086C8C2D111})  
4/7/2016 4:06:55 AM - requesting resource LUN01
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - requesting resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_CLIENT.MAXJOBS.nbuclient
4/7/2016 4:06:55 AM - granted resource nbumaster.NBU_POLICY.MAXJOBS.po01
4/7/2016 4:06:55 AM - granted resource MediaID=@aaaab;Path=E:\LUN01;MediaServer=nbumedia
4/7/2016 4:06:55 AM - granted resource LUN01
4/7/2016 4:06:55 AM - estimated 0 Kbytes needed
4/7/2016 4:06:55 AM - Info nbjm(pid=5024) started backup (backupid=nbuclient_1460027215) job for client nbuclient, policy po01, schedule Full on storage unit LUN01
4/7/2016 4:06:57 AM - started process bpbrm (1000)
4/7/2016 4:06:59 AM - connecting
4/7/2016 4:07:02 AM - connected; connect time: 0:00:03
4/7/2016 4:07:04 AM - begin writing

P.S.

When I click the access management,the windows shows "Supplied credential is expired or incorrect. Please reauthenticate and try again.”