I now tried in single user mode and there I could run the check. It even said it was clean? (Looking at what tune2fs said, that is - for me - surprising).
I did run lsof on the partition, but it did not return anything. It might have been an unclean shutdown of gparted, leaving either parted or ntfsresize as zombies on /dev/sdb. That happened today, but was visible in lsof. But yesterday I did not run fdisk -l, which is quite useful to see more information on what the kernel knows. I also run the check with the -c option, but no error was mentioned. Everything turned out the be clean. I then removed /dev/sdb1 from /etc/fstab and continued to boot normal. Then I could change the size of the partition (that was my initial goal). Afterwards I added it back and all seems to run smooth now. So if anyone runs into the same problem, here is what to check: 0. umount /dev/sdb1; mount |grep sdb1 1. lsof /dev/sdb1 2. fdisk -l 3. cat /proc/mounts 4. remove partition from /etc/fstab and boot into single user mode (press e on grup and add "single" at the end of the kernel line, then press ctrl-x to boot). There check again. 5. If all fails, come back here ask again :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/711799 Title: e2fsprogs wrongly identifies ext4 as mounted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/711799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
