Upgrade

Yocto

The update of the Yocto version of SEAPATH uses software update. The update process is described on the Ansible repository.

The apt package tool is used to upgrade the system. You can use the rollback to avoid loss of the system (more details in the below section).

Update the database of available packages, with their version:

apt update

Upgrade the system with the new version of packages:

apt upgrade --yes

Upgrade the system with new version of Debian and remove useless packages:

apt dist-upgrade --yes
apt autoremove --yes --purge

As mentioned here, the root partition is on LVM disk. With this configuration, it can be saved by a LVM snapshot.

lvcreate -L SIZE -s -n SNAPSHOT_NAME /dev/VOLUME_GROUP/DISK_NAME

With snapshots, the partition can be rollback in the stable state with this command:

lvconvert --merge /dev/VOLUME_GROUP/SNAPSHOT_NAME

Otherwise, the snapshot can be removed with these commands:

lvremove /dev/VOLUME_GROUP/SNAPSHOT_NAME

More details here.

If you don't reboot the machine, the lvcreate command believes the name is always used. To remove it, you need to launch this command:

vgchange --refresh