Canonical System Image

Cannot unmount SD card

Bug #1535529 reported by Côme Chilliet
28
This bug affects 6 people
Affects Status Importance Assigned to Milestone
Canonical System Image
Confirmed
Medium
Unassigned
Canonical System Image backlog
ciborium (Ubuntu)
Confirmed
High
Unassigned

Bug Description

I inserted an SD card in the phone, wanting to format it because it contained old data.
The phone mounted it right away and started fetching data from it, music, photos, …

I cannot unmount the SD card, it says «Unmount error: the device could not be unmounted because is busy».
I tried waiting a long time or rebooting the phone, I keep getting this error and cannot unmount the SD card nor format it.

I also tried using the terminal but I can’t seem to find where the sd card is mounted. As a temporary work around I’d be interested into how to see where it’s mounted and which process are using it, and if possible kill them in order to unmount successfully.

I believe this bug is related to https://bugs.launchpad.net/ubuntu/+source/ciborium/+bug/1414731 .

Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

Thanks for your report. I confirmed this behaviour on krillin rc-proposed 232.

Changed in canonical-devices-system-image:
importance: Undecided → Medium
milestone: none → backlog
status: New → Confirmed
Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

ciborium log when this issue is reproduced.

Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

Interestingly the device can be unmounted manually from the command line.

Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

unmounting with udisks is also successful even with ciborium open.

phablet@ubuntu-phablet:~$ mount | grep vfat
/dev/mmcblk1p1 on /media/phablet/Médias SDc type vfat (rw,nosuid,nodev,relatime,uid=32011,gid=32011,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)
phablet@ubuntu-phablet:~$ udisksctl unmount -b /dev/mmcblk1p1
Unmounted /dev/mmcblk1p1.
phablet@ubuntu-phablet:~$ mount | grep vfat

Changed in ciborium (Ubuntu):
importance: Undecided → High
Revision history for this message
Launchpad Janitor (janitor) wrote :

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

Changed in ciborium (Ubuntu):
status: New → Confirmed
Revision history for this message
Matthias Apitz (gubu) wrote :

I have the same or a similar problem filed as https://bugs.launchpad.net/bugs/1565633
I say similar because I can't unmount the mounted vfat, at least not with 'sudo unmount ....' it says the file system is busy;

Revision history for this message
Matthias Apitz (gubu) wrote :

I can not unmount the file system after inserting the microSD:

phablet@ubuntu-phablet:~$ mount | fgrep vfat
/dev/mmcblk1p1 on /media/phablet/7895-9F4B type vfat (rw,nosuid,nodev,relatime,uid=32011,gid=32011,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)

phablet@ubuntu-phablet:~$ sudo umount /dev/mmcblk1p1
[sudo] password for phablet:
umount: /media/phablet/7895-9F4B: target is busy
        (In some cases useful info about processes that
         use the device is found by lsof(8) or fuser(1).)

phablet@ubuntu-phablet:~$ udisksctl unmount -b /dev/mmcblk1p1
Error unmounting /dev/mmcblk1p1: GDBus.Error:org.freedesktop.UDisks2.Error.DeviceBusy: Error unmounting /dev/mmcblk1p1: Command-line `umount "/media/phablet/7895-9F4B"' exited with non-zero exit status 32: umount: /media/phablet/7895-9F4B: target is busy
        (In some cases useful info about processes that
         use the device is found by lsof(8) or fuser(1).)

phablet@ubuntu-phablet:~$ mount | fgrep vfat
/dev/mmcblk1p1 on /media/phablet/7895-9F4B type vfat (rw,nosuid,nodev,relatime,uid=32011,gid=32011,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)

Pat McGowan (pat-mcgowan)
Changed in canonical-devices-system-image:
assignee: nobody → John McAleely (john.mcaleely)
John McAleely (john.mcaleely)
Changed in canonical-devices-system-image:
assignee: John McAleely (john.mcaleely) → nobody
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