tumblerd prevents removable media from being unmounted

[halfbeing]

I believe this is the same issue as bug 582501, but as that bug report appears to be dead, I am restating it here. Reading around the interwebs, it appears to be a very well known and long-standing bug.

tumblerd prevents removable media from being removed. This happened to me this evening with an mp3 player. From what I have read around the web, this happens only when there are video files on the media, and I can confirm that the media I was trying to dismount this evening contained a video file.

I have just noticed that the drive I was trying to unmount has finally unmounted while I was researching and writing this report. So it appears that this bug may simply delay unmounting, albeit for an unacceptably long time, rather than outright preventing it.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: tumbler 0.1.30-1ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.47-lowlatency 3.13.9
Uname: Linux 3.13.0-24-lowlatency x86_64
ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed May 14 22:21:12 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-08-22 (265 days ago)
InstallationMedia: Ubuntu-Studio 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: tumbler
UpgradeStatus: Upgraded to trusty on 2014-04-22 (22 days ago)

[Thaddaeus Tintenfisch (thad-fisch-deactivatedaccount)]

Related upstream report:

https://bugzilla.xfce.org/show_bug.cgi?id=8208

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[David Pires (slickymaster)]

tumbler prevents volume from being unmounted. The volume content consists of jpg, png, mov and MP4 files.

Here's the terminal output when trying to unmount the volume:

~$ fusermount -u ./private
fusermount: failed to unmount /home/slickymaster/private: Device or resource busy

Running 'fuser -m' on the mount point to see what processes are currently using the filesystem:

~$ fuser -m ./private
/home/slickymaster/private: 3829

Getting the process name:

~$ cat /proc/3829/cmdline
/usr/lib/i386-linux-gnu/tumbler-1/tumblerd

The only possible way to get the volume to unmount is by manual killing the culprit process:

~$ kill 3829
~$ fusermount -u ./private
~$

~$ apt-cache policy tumbler
tumbler:
  Installed: 0.1.30-1ubuntu1
  Candidate: 0.1.30-1ubuntu1
  Version table:
 *** 0.1.30-1ubuntu1 0
        500 http://pt.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages
        100 /var/lib/dpkg/status

~$ lsb_release -a && uname -r
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty
3.16.0-031600-generic

[David Pires (slickymaster)]

Added upstream bug report.

[David R. Miller (zplb)]

Reproducible if I attempt to read (not write) an SD card (containing video files) in the card reader in my laptop. If I try to eject it, a pop-up appears saying "Volume is busy" and identifies tumblerd. The only other thing happening on the computer is a Thunar window open to my local home directory on the laptop. No Thunar window is open on the removable device. After about 20 minutes, the pop-up disappears and is replaced with another one that says "Failed to unmount...Timeout was reached."

Ubuntu 18.04.2 LTS
kernel 4.15.0-52-generic #56-Ubuntu SMP
Xfce 4.12
tumbler 0.2.1-0ubuntu1

Steps: insert the SD card, read a file off of it, try to eject it. Expected results: ejected card; Actual results: message appears and persists saying that tumblerd is using the volume, and CPU activity increases and persists on the Thunar process.

[Jarno Suni (jarnos)]

There is a workaround https://askubuntu.com/a/266060/21005 that prevents tumblerd from creating thumbnails of video files. This could be set default to not prevent unmounts.
Also bug report for Ubuntu: https://bugs.launchpad.net/ubuntu/+source/tumbler/+bug/1319554