Why Extended ACL is functional on Ext4 filesystems in RHEL 7 even after removing the feature from filesystem feature?

Solution Verified - Updated -

Issue

  • Extended ACLs seem to be functional on Ext4 filesystems even though:
    • It is not specified as default filesystem mount option (tune2fs -l )
    • Filesystem is not mounted with the required option (-o acl).

Environment

  • Red Hat Enterprise Linux (RHEL) 7

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