rollback for clear ftmp dir due to they may have old .pid file frmo jail
rollback for clear ftmp dir due to they may have old .pid file frmo jail

cbsd/cbsd,olevole/cbsd,olevole/cbsd,jnbek/cbsd,olevole/cbsd,cbsd/cbsd,hongzhen/cbsd,hongzhen/cbsd,hongzhen/cbsd,jnbek/cbsd,jnbek/cbsd,hongzhen/cbsd,cbsd/cbsd,jnbek/cbsd,cbsd/cbsd,olevole/cbsd