Comment 0 for bug 1796559

would you help me plz?
I wanted to make trove image with the below command:

disk-image-create -a amd64 \
    -o ${DISTRO}-${DATASTORE}-${DATASTORE_VERSION}-guest-image \
    -x --qemu-img-options compat=0.10 \
    ${DISTRO}-${DATASTORE}-guest-image

This is my failer:

Traceback (most recent call last):
2018-10-07 12:05:49.934 | File "/root/.venv/bin/dib-block-device", line 11, in <module>
2018-10-07 12:05:49.934 | sys.exit(main())
2018-10-07 12:05:49.935 | File "/root/.venv/lib/python2.7/site-packages/diskimage_builder/block_device/cmd.py", line 120, in main
2018-10-07 12:05:49.953 | return bdc.main()
2018-10-07 12:05:49.953 | File "/root/.venv/lib/python2.7/site-packages/diskimage_builder/block_device/cmd.py", line 115, in main
2018-10-07 12:05:49.953 | self.args.func()
2018-10-07 12:05:49.953 | File "/root/.venv/lib/python2.7/site-packages/diskimage_builder/block_device/cmd.py", line 39, in cmd_umount
2018-10-07 12:05:49.953 | self.bd.cmd_umount()
2018-10-07 12:05:49.953 | File "/root/.venv/lib/python2.7/site-packages/diskimage_builder/block_device/blockdevice.py", line 441, in cmd_umount
2018-10-07 12:05:49.973 | node.umount()
2018-10-07 12:05:49.973 | File "/root/.venv/lib/python2.7/site-packages/diskimage_builder/block_device/level3/mount.py", line 114, in umount
2018-10-07 12:05:49.994 | exec_sudo(["umount","-f", self.state['mount'][self.mount_point]['path']])
2018-10-07 12:05:49.994 | File "/root/.venv/lib/python2.7/site-packages/diskimage_builder/block_device/utils.py", line 143, in exec_sudo
2018-10-07 12:05:49.994 | raise e
2018-10-07 12:05:49.995 | diskimage_builder.block_device.exception.BlockDeviceSetupException: exec_sudo failed