help of SVN

[public1979]

Hello，
I'm a new user of subversion.
My version is "svn, version 1.6.11 (r934486)",i have some questions about 
svnsync .
I made a svn mirror from server A to server B. it could work  first few days 
until an accidental power failure. 
Now it can't work ,what can i do .
Please help me,
Thank U.