Ahh, I was able to reproduce this with a loop mounted ntfs image. Looks like a bug in the ntfs-3g driver.
** Package changed: util-linux (Ubuntu) => ntfs-3g (Ubuntu) ** Changed in: ntfs-3g (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1516702 Title: fstrim on 30 GB ntfs partition says 16 EiB (18446744073709551615 bytes) trimmed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ntfs-3g/+bug/1516702/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs