There wasn't actually an *error*. E4defrag doesn't need root prives to
find and print statistics. It doesn't deliberately because the people
who wrote the program decided this was the right thing to do. So it's
not actually hiding the error, it's just doing something weird/stupid.
Which you
```
~ fsck -n /dev/sda2
fsck from util-linux 2.27.1
e2fsck 1.42.13 (17-May-2015)
fsck.ext4: Permission denied while trying to open /dev/sda2
You must have r/o access to the filesystem or be root
~ e4defrag -c /dev/sda2
Done.
```
The user's expectation is to be informed of the reason the
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: e2fsprogs (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/1090053
Title:
Please start it under root (i.e. 'sudo e4defrag -c /') for correct
behavior.
** Changed in: e2fsprogs (Ubuntu)
Status: Confirmed = Invalid
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https://bugs.launchpad.net/bugs/1090053
