Fstab doesn't mount with exec

Question

I have an ext4 partition that I mount using the following fstab line

UUID=41dec246-654d-4e35-9d4e-68150e40c5b0 /mnt/Data     ext4    defaults,user      0      2

But then I realized that I can't execute from that partition. I checked my mount options and they were: rw,noexec,nosuid,nodev

So I changed the mount options to be more explicit as follows:

UUID=41dec246-654d-4e35-9d4e-68150e40c5b0 /mnt/Data     ext4    rw,suid,dev,exec,auto,user,async      0      2

But the partition still mounts with the same options (rw,noexec,nosuid,nodev).

I'm running Ubuntu 14.04 and I'm using UEFI booting. I'm also dual-booting with Windows 8.1

Answer 1

Change that line to

UUID=41dec246-654d-4e35-9d4e-68150e40c5b0 /mnt/Data     ext4    rw,suid,dev,auto,user,async,exec      0      2

The position of exec is important, since user also applies noexec. By putting exec after user, you ensure that exec is set. The most important options should be listed last.