Creating atrifact -Convert a raw disk image problem

command :
./docker-mender-convert from-raw-disk-image
–raw-disk-image $RAW_DISK_IMAGE
–mender-disk-image $MENDER_DISK_IMAGE
–device-type $DEVICE_TYPE
–artifact-name $ARTIFACT_NAME
–bootloader-toolchain arm-buildroot-linux-gnueabihf
–demo-host-ip $DEMO_HOST_IP

log file

1/9 re-partitioning raw disk image…
detected raw disk image with 1 partition(s).
adjust Mender disk image size to the total storage size(8000mb)
Defined total storage size of MB is too small
Minimal required storage is 30532MB. aborting

Please do not create new topics as same question was asked in here