背景：
我用fuel9.0部署了openstack，并且安装了最新的trove，能正常使用。但使用官方的diskimage-builder创建ubuntu-mysql镜像的时候总是会报错，显示如下：
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 99-tidy-logs completed
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 -----------------------
PROFILING -----------------------
dib-run-parts Tue Oct 4 12:57:08 UTC 2016
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 Target: cleanup.d
dib-run-parts Tue Oct 4 12:57:08 UTC 2016
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 Script
Seconds
dib-run-parts Tue Oct 4 12:57:08 UTC 2016
--------------------------------------- ----------
dib-run-parts Tue Oct 4 12:57:08 UTC 2016
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 01-ccache
0.016
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 01-copy-manifests-dir
0.084
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 40-unblock-daemons
0.030
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 50-remove-img-build-proxy
0.011
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 51-bootloader
0.033
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 60-untrim-dpkg
0.075
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 99-tidy-logs
0.235
dib-run-parts Tue Oct 4 12:57:08 UTC 2016
dib-run-parts Tue Oct 4 12:57:08 UTC 2016 --------------------- END
PROFILING ---------------------
rm: cannot remove '/tmp/dib_build.tBIihUi4': Device or resource busy
而且，我在程序中断后，试图自己sudo rm -rf /sudo rmdir都没有用。