43     image_len = 1 * 1024 * 1024 # MB  variable in TestSingleDrive
285     image_len = 0  variable in TestSingleDriveZeroLength
290     image_len = 0  variable in TestSingleBlockdevZeroLength
295     image_len = 1025 * 1024  variable in TestSingleDriveUnalignedLength
300     image_len = 1025 * 1024  variable in TestSingleBlockdevUnalignedLength
303     image_len = 2 * 1024 * 1024 # MB  variable in TestMirrorNoBacking
374     image_len = 2 * 1024 * 1024 # MB  variable in TestMirrorResized
420     image_len = 2 * 1024 * 1024 # MB  variable in TestReadErrors
586     image_len = 2 * 1024 * 1024 # MB  variable in TestWriteErrors
713     image_len = 80 * 1024 * 1024 # MB  variable in TestSetSpeed
776     image_len = 2 * 1024 * 1024 # MB  variable in TestUnbackedSource
861     image_len = 10 * 1024 * 1024 # MB  variable in TestGranularity
897     image_len = 1 * 1024 * 1024 # MB  variable in TestRepairQuorum