e2fsprogs 1.43.1. Kernel 4.7.1 with
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_EXT4_USE_FOR_EXT2=y
Steps to reproduce the issue:
# mkfs.ext4 -q /dev/sda2
# tune2fs -E mount_opts="noatime" /dev/sda2
tune2fs 1.43.1 (08-Jun-2016)
Setting extended default mount options to 'noatime'
# tune2fs -l /dev/sda2 | grep -i 'mount options'
Default mount options: user_xattr acl
Mount options: noatime
# mount /dev/sda2 /mnt
# findmnt /mnt
TARGET SOURCE FSTYPE OPTIONS
/mnt /dev/sda2 ext4 rw,relatime,data=ordered
^^^^^^^^
# touch /mnt/aaa
# stat /mnt/aaa
File: '/mnt/aaa'
Size: 0 Blocks: 0 IO Block: 4096 regular empty file
Device: 802h/2050d Inode: 12 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2016-08-23 08:14:10.056525341 -0300
Modify: 2016-08-23 08:14:10.056525341 -0300
Change: 2016-08-23 08:14:10.056525341 -0300
Birth: -
# cat /mnt/aaa
# stat /mnt/aaa
File: '/mnt/aaa'
Size: 0 Blocks: 0 IO Block: 4096 regular empty file
Device: 802h/2050d Inode: 12 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2016-08-23 08:19:27.081474536 -0300
Modify: 2016-08-23 08:14:10.056525341 -0300
Change: 2016-08-23 08:14:10.056525341 -0300
Birth: -
Other options like noacl, nouser_xattr, are ignored too. This
filesystem is not listed in fstab.
Marcos
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