Disable overlayfs automount of /etc and /home on boot

Autonomous Vehicles DRIVE AGX Orin DRIVE AGX Orin General
1

Please provide the following info (tick the boxes after creating this topic):
Software Version
DRIVE OS 6.0.8.1
DRIVE OS 6.0.6
DRIVE OS 6.0.5
DRIVE OS 6.0.4 (rev. 1)
DRIVE OS 6.0.4 SDK
other

Target Operating System
Linux
QNX
other

Hardware Platform
DRIVE AGX Orin Developer Kit (940-63710-0010-300)
DRIVE AGX Orin Developer Kit (940-63710-0010-200)
DRIVE AGX Orin Developer Kit (940-63710-0010-100)
DRIVE AGX Orin Developer Kit (940-63710-0010-D00)
DRIVE AGX Orin Developer Kit (940-63710-0010-C00)
DRIVE AGX Orin Developer Kit (not sure its number)
other

SDK Manager Version
1.9.3.10904
other

Host Machine Version
native Ubuntu Linux 20.04 Host installed with SDK Manager
native Ubuntu Linux 20.04 Host installed with DRIVE OS Docker Containers
native Ubuntu Linux 18.04 Host installed with DRIVE OS Docker Containers
other

We’d like to directly manage the mounting of the additional 100GB of storage available to us and not use the automatic overlayfs mount that DriveOS does on our behalf.

Are there instructions for how we can do that? Specifically how we can stop the system from overlayfs mounting. Looking on the system we couldn’t find where that was being done, but maybe we missed something, or it’s in a native binary we can’t grep?

(a2|BENCH-001|1421023022417)eva@tegra-ubuntu:~$ lsblk -l
NAME        MAJ:MIN  RM  SIZE RO TYPE MOUNTPOINT
sda           8:0     0  3.7T  0 disk
sda1          8:1     0  3.7T  0 part /media/sda1
vblkdev0    252:0     0   26G  0 disk
vblkdev0p1  252:1     0   26G  0 part /
vblkdev1    252:32    0  256M  0 disk /mnt/persistent/metadata
vblkdev2    252:64    0  116G  0 disk /mnt/persistent/data
vblkdev3    252:96    0    1G  0 disk
vblkdev20   252:640   0  256K  0 disk
vblkdev21   252:672   0  200M  1 disk
vblkdev22   252:704   0  256K  1 disk
vblkdev30   252:960   0  3.5M  0 disk
vblkdev30p1 252:961   0    1M  0 part
vblkdev30p2 252:962   0    1M  0 part
vblkdev30p3 252:963   0    1M  0 part
vblkdev50   252:1600  0   10G  0 disk

(a2|BENCH-001|1421023022417)eva@tegra-ubuntu:~$ findmnt /etc
TARGET SOURCE  FSTYPE  OPTIONS
/etc   overlay overlay rw,relatime,seclabel,lowerdir=/etc,upperdir=/mnt/persistent/metadata/etc,workdir=/mnt/persistent/metadata/tmp/etc

(a2|BENCH-001|1421023022417)eva@tegra-ubuntu:~$ findmnt /home
TARGET SOURCE  FSTYPE  OPTIONS
/home  overlay overlay rw,relatime,seclabel,lowerdir=/home,upperdir=/mnt/persistent/data/home,workdir=/mnt/persistent/data/tmp/home
3

Please check the file ‘/drive/drive-linux/filesystem/targetfs/usr/sbin/driveos-persistence-helper.sh’ for the information you’re looking for regarding overlays mounting.

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