Debian 9 (stretch) Upgrade Notes

Debian was upgraded to Debian 9 (stretch) in XiVO 2018.14 release.


Upgrade from versions XiVO 15.19 or earlier are not supported. You MUST first upgrade to at least XiVO 15.20 or, more recommended, to XiVO Five before upgrading to XiVO Borealis.


Docker storage driver changed from aufs to overlay2. To not suffer data loss you must follow a manual procedure which is not documented yet. Therefore:

  • XiVO PBX / UC / CC is not installable or upgradable on XFS partition created without ftype=1 option. If the partition is XFS, you MUST check if the option is enabled with the xfs_info command.
  • Upgrade for XiVO CC to Debian 9 is currently not supported.

Before the upgrade

  • It is not possible to upgrade from XiVO 15.19 or earlier. You first need to upgrade to XiVO Five.

  • Make sure you have sufficient space for the upgrade. You should have more than 2GiB available in the filesystem that holds the /var and / directories.

  • Note that the upgrade will take longer than usual because of all the system upgrade.

  • You MUST deactivate all non-xivo apt sources list:

    • in directory /etc/apt/sources.list.d/ you should only have the files xivo-dist.list and (from Aldebaran) docker.list.
    • you MUST suffix all other files with .save to deactivate them.
  • You MUST check the Debian sources list are correct: the file /etc/apt/sources.list must contain the following and only the following:

    deb jessie main
    deb-src jessie main
    deb jessie/updates main
    deb-src jessie/updates main
    # jessie-updates, previously known as 'volatile'
    deb jessie-updates main
    deb-src jessie-updates main
  • You may want to clean your system before upgrading:

    • Remove package that were automatically installed and are not needed anymore:

      apt-get autoremove --purge
    • Purge removed packages. You can see the list of packages in this state by running dpkg -l | awk '/^rc/ { print $2 }' and purge all of them with:

      apt-get purge $(dpkg -l | awk '/^rc/ { print $2 }')
    • Remove .dpkg-old, .dpkg-dist and .dpkg-new files from previous upgrade. You can see a list of these files by running:

      find /etc -name '*.dpkg-old' -o -name '*.dpkg-dist' -o -name '*.dpkg-new'

After the upgrade

  • After having check your network configuration and the grub configuration, you MUST reboot your system. It is necessary for the upgrade to the Linux kernel to be effective.

  • Check that customization to your configuration files is still effective.

    During the upgrade, new version of configuration files are going to be installed, and these might override your local customization. For example, the vim package provides a new /etc/vim/vimrc file. If you have customized this file, after the upgrade you’ll have both a /etc/vim/vimrc and /etc/vim/vimrc.dpkg-old file, the former containing the new version of the file shipped by the vim package while the later is your customized version. You should merge back your customization into the new file, then delete the .dpkg-old file.

    You can see a list of affected files by running find /etc -name '*.dpkg-old'. If some files shows up that you didn’t modify by yourself, you can ignore them.

  • Purge removed packages. You can see the list of packages in this state by running dpkg -l | awk '/^rc/ { print $2 }' and purge all of them with:

    apt-get purge $(dpkg -l | awk '/^rc/ { print $2 }')


Here’s a non-exhaustive list of changes that comes with XiVO on Debian 9:

  • Network utility: the tools from the net-tools package are no longer part of new installations by default. They are replaced by the iproute2 toolset. For a complete summary of the net-tools commands with their iproute2 equivalent see the Official Debian 9 Release notes related chapter. Here are 4 examples:

    • Instead of arp, use ip n (short for ip neighbor)
    • Instead of ifconfig, use ip a (short for ip addr)
    • Instead of netstat, use ss
    • Instead of route, use ip r (short for ip route)
  • Docker recommended storage driver is overlay2 and the usage of aufs storage driver was deprecated in Debian 9 (stretch). Thus we recommend to use overlay2 as storage driver and our upgrade procedure will try to stick to this choice if possible. (Note that, via a manual procedure and installation of extra packages, it is still possible to use aufs storage driver but we do not recommend it).