solve bug in Getblock location
fix bugs
add bench and improve daisy chain
change get_replica, achieve load balance
Merge branch 'lhh_dev' of https://github.com/proj-223/CatFs into lhh_dev
Merge remote-tracking branch 'origin/lhh_dev'
improve block send and get
fix add port
fix default data server
add ubuntu setup
update
solve bug of not sending clean command
fix bugs
Merge branch 'master' into refactoring
refactoring