read file content error:ScsiBlockDevice: Could not read from device, result == -1 errno 0 null

[epowsal]

I can read file name. but I read file content got error: ScsiBlockDevice: Could not read from device, result == -1 errno 0 null W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying... W/ScsiBlockDevice: Could not read from device, result == -1 errno 0 null, retrying...