Can't umount dislocker file

[bprimrose]

Windows is the official company OS, I'm running Ubuntu 17.10 in dual-boot and I need to back my files up to the Windows filesystem to avoid the ire of Corp IT.

I mounted via sudo and say:/

    $ sudo dislocker -r -V /dev/nvme0n1p2 -p586036-270226-236071-434709-493537-192544-225907-208329 -- /media/bitlocker
    $ sudo mount -r -o loop,uid=1000,gid=1000 /media/bitlocker/dislocker-file /media/doze

Attempt to copy files, find out I mounted RO via a screenful of errors: $ rsync --delete -ta Documents/ /media/doze/Users/bprimrose/Documents/

No biggy, dismount and remount RW

    $ sudo umount /media/doze
    $ sudo umount /media/bitlocker/dislocker-file 
    umount: /media/bitlocker/dislocker-file: not mounted.

Oh, it's not mounted. Great, let's remount:

$ sudo ls -l /media/bitlocker/dislocker-file
    -r--r--r-- 1 root root 145600019968 Dec 31  1969 /media/bitlocker/dislocker-file
    $ sudo dislocker -V /dev/nvme0n1p2 -p586036-270226-236071-434709-493537-192544-225907-208329 -- /media/bitlocker
    fuse: mountpoint is not empty
    fuse: if you are sure this is safe, use the 'nonempty' mount option

Can anyone here explain why I can't unmount the dislocker file, and how I can? Is it safe to shut down my system at this point?

[superbonaci]

If you mounted it read only you can force close.

[thinrope]

Please do NOT post sensitive data (recovery passwords), your "Corp IT" will spank you :-D

[tlbprim]

That was really out of character for me. Any way to edit a former comment to remove the info?

[thinrope]

Yes, you should be able to edit your comments (the pen icon top right of the comment box), but once leaked on the Net, data is cashed here and there and in at least 10 other places... The usual way is to change a leaked password, and you may have other policies (e.g. notify "Corp IT")...

[Aorimn]

For the initial problem, I've no solution indeed, but doing a sync then force unmount will help mitigate issues with data corruption. On the other hand, using sometimes fusermount -u /media/bitlocker/dislocker-file will work while umount won't, not sure why: I've never been able to reproduce the issue consistently.

[paulstelian97]

Maybe you need to do losetup -d on where you have bound dislocker-file? If you did it manually. Mounting with -o loop should automatically clean the loop device setup but please verify it.

[bprimrose]

The laptops wiped now (I'm on to a new job). I'll pick this back up if I dual boot at the new one.

On Sat, May 26, 2018, 5:33 AM paulstelian97 notifications@github.com wrote:

Maybe you need to do losetup -d on where you have bound dislocker-file? If you did it manually. Mounting with -o loop should automatically clean the loop device setup but please verify it.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/Aorimn/dislocker/issues/136#issuecomment-392249761, or mute the thread https://github.com/notifications/unsubscribe-auth/Aj62EyHqrBLOTAjG_tqXxiOzT19x7A-uks5t2SFdgaJpZM4S3Kvl .

[superbonaci]

@bprimrose stop quoting private messages and emails

[yechs]

I have experienced the exact same error.

After checking with mount command, I found the following:

# mount
[redacted]
dislocker on /media/bitlocker type fuse.dislocker (rw,nosuid,nodev,relatime,user_id=0,group_id=0)

So instead of un-mounting the dislocker-file as illustrated in the man page, what worked for me was to un-mount the parent folder: umount /media/bitlocker

[superbonaci]

@yechs exactly you umount the parent directory containing the dislocker-file not the file itself.