how to unmount busy devices

this is one I always forget. So I’ll write it down for myself

There are 2 ways to unmount a device when it’s busy.

1. the clean way:

# fuser -m /media/attached
/media/attached/:        1249c

ps auxw | grep 1249
bert      1249  0.2  0.3 1052124 30760 ?       Sl   Sep18   2:19 python /usr/bin/revelation

revelation is what is keeping you away from unmounting the drive. just kill it

2. the not so clean way

there is another easier way, which basicly just ditches the drive and then takes care of the problems afterwards.

umount -l /dev/sdc1

cheers