Hi,everyone.

I tested the capability of drive mirror, I found the IO is low. Then I read the code,

The code mirror_run() will call mirror_iteration() to read the size of buffer data 

from source storage, when the read callback ,and then in mirror_read_complete ()

write the data to the target storage, It is serial.

Now, I hope when it is writing the data to target storage ,we can send the request

of reading data from source storage. Because of  using  coroutine to do it ,there is

some troubles to achieve it. why not use Multi-thread?

Some one can give me some idea?

Thanks.