for some specific information on different ubuntu kernels:
-- latest kernel before 4.8 entered yakkety -- $ uname -r 4.4.0-9136-generic
$ grep overlay /lib/modules/4.4.0-9136-generic/modules.alias alias overlayfs overlay alias fs-overlayfs overlay alias fs-overlay overlay
$ sudo modprobe -v overlayfs insmod /lib/modules/4.4.0-9136-generic/kernel/fs/overlayfs/overlay.ko
$ lsmod | grep overlay overlay
$ grep overlay /proc/filesystems nodev overlayfs nodev overlay
-- 4.8 kernel in yakkety -- $ uname -r 4.8.0-15-generic
$ grep overlay /lib/modules/4.8.0-15-generic/modules.alias alias fs-overlay overlay
$ modprobe -v overlayfs modprobe: FATAL: Module overlayfs not found in directory /lib/modules/4.8.0-15-generic
$ modprobe -v overlay insmod /lib/modules/4.8.0-15-generic/kernel/fs/overlayfs/overlay.ko
$ grep overlay /proc/filesystems nodev overlay
-- 3.13 kernel (trusty GA) -- $ uname -r 3.13.0-96-generic
$ grep overlay /lib/modules/3.13.0-96-generic/modules.alias alias fs-overlayfs overlayfs
$ sudo modprobe -v overlay modprobe: FATAL: Module overlay not found.
$ sudo modprobe -v overlayfs insmod /lib/modules/3.13.0-96-generic/kernel/fs/overlayfs/overlayfs.ko
$ grep overlay /proc/filesystems nodev overlayfs
for some specific information on different ubuntu kernels:
-- latest kernel before 4.8 entered yakkety --
$ uname -r
4.4.0-9136-generic
$ grep overlay /lib/modules/ 4.4.0-9136- generic/ modules. alias
alias overlayfs overlay
alias fs-overlayfs overlay
alias fs-overlay overlay
$ sudo modprobe -v overlayfs 4.4.0-9136- generic/ kernel/ fs/overlayfs/ overlay. ko
insmod /lib/modules/
$ lsmod | grep overlay
overlay
$ grep overlay /proc/filesystems
nodev overlayfs
nodev overlay
-- 4.8 kernel in yakkety --
$ uname -r
4.8.0-15-generic
$ grep overlay /lib/modules/ 4.8.0-15- generic/ modules. alias
alias fs-overlay overlay
$ modprobe -v overlayfs 4.8.0-15- generic
modprobe: FATAL: Module overlayfs not found in directory /lib/modules/
$ modprobe -v overlay 4.8.0-15- generic/ kernel/ fs/overlayfs/ overlay. ko
insmod /lib/modules/
$ grep overlay /proc/filesystems
nodev overlay
-- 3.13 kernel (trusty GA) --
$ uname -r
3.13.0-96-generic
$ grep overlay /lib/modules/ 3.13.0- 96-generic/ modules. alias
alias fs-overlayfs overlayfs
$ sudo modprobe -v overlay
modprobe: FATAL: Module overlay not found.
$ sudo modprobe -v overlayfs 3.13.0- 96-generic/ kernel/ fs/overlayfs/ overlayfs. ko
insmod /lib/modules/
$ grep overlay /proc/filesystems
nodev overlayfs