Sebastien, I was able to reproduce this just like Andree said. After
copying several large files, Nautilus keeps writing them in background
and displays the reported message when the user tries to eject, long
after the progress dialog has closed:
$ while true; do date; df -m /media/ariel/Samsung\ USB/_fun/ | sed 1d; sleep
30; done
Mon Jul 11 08:36:49 VET 2016
/dev/sde1 15280 10629 4652 70% /media/ariel/Samsung USB
Mon Jul 11 08:37:19 VET 2016
/dev/sde1 15280 11215 4066 74% /media/ariel/Samsung USB
Mon Jul 11 08:37:49 VET 2016
/dev/sde1 15280 11667 3614 77% /media/ariel/Samsung USB
Mon Jul 11 08:38:19 VET 2016
/dev/sde1 15280 12045 3236 79% /media/ariel/Samsung USB
Mon Jul 11 08:38:49 VET 2016
/dev/sde1 15280 12467 2814 82% /media/ariel/Samsung USB
Mon Jul 11 08:39:19 VET 2016
/dev/sde1 15280 12884 2397 85% /media/ariel/Samsung USB
Mon Jul 11 08:39:49 VET 2016
/dev/sde1 15280 13164 2117 87% /media/ariel/Samsung USB
Mon Jul 11 08:40:19 VET 2016
/dev/sde1 15280 13164 2117 87% /media/ariel/Samsung USB
Mon Jul 11 08:40:49 VET 2016
/dev/sde1 15280 13164 2117 87% /media/ariel/Samsung USB
$ lsof +D /media/ariel/Samsung\ USB/
lsof: WARNING: can't stat() tracefs file system /sys/kernel/debug/tracing
Output information may be incomplete.
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
nautilus 1667 ariel 56w REG 8,65 2419224576 1467 /media/ariel/Samsung
USB/_fun/Evangelion Rebuild/Evangelion 3.33 - You Can (Not) Redo.mp4
My Nautilus version is 3.14.2-0ubuntu13 (Wily).
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https://bugs.launchpad.net/bugs/562188
Title:
Cannot unmount USB flash drive because volume is busy
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