Red Hat Bugzilla – Bug 1464443
mkfs.ext4 ignores the default_mntopts in /etc/mke2fs.conf
Last modified: 2017-07-18 17:24:59 EDT
mke2fs.conf is simply restating the default; if the string is empty, nothing changes. This is the same if you had mounted the filesystem with no options; no options != noacl. To disable default mount options, use the caret (^) as indicated in the tune2fs manpage:
> Mount options prefixed with a caret character ('^') will be cleared in the filesystem's superblock
Changing it to:
default_mount_opts = "^acl"