Yesterday I wrote about my attempt to upgrade one of my HP Microservers, running Ubuntu 18.04 LTS to Ubuntu 20.04 LTS. Well, today I had another go. Here’s what happened.
I followed the recommendation from yesterday, to compress the initrd.img using xz compression rather than the previous default gzip. Previously the upgrade failed because it needed 140M disk space in /boot. With the change to the compression scheme, I now have 154M, which should be enough to start the upgrade.
alan@robby:~$ df -h /boot
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 226M 57M 154M 27% /boot
Well, I started the upgrade with sudo do-release-upgrade and once again had to reboot, then started the upgrade again.
Just like last time I needed to okay the change to the sources.list and accept that third party repositories were disabled.
Updating repository information
No valid mirror found
While scanning your repository information, no mirror entry for the
upgrade was found. This can happen if you run an internal mirror or
if the mirror information is out-of-date.
Do you want to rewrite your 'sources.list' file anyway? If you choose
'Yes' here, it will update all 'bionic' to 'focal' entries.
If you select 'No', the upgrade will cancel.
Continue [yN] y
Third party sources disabled
Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.
To continue please press [ENTER]
Okay, so we got past the size check of /boot. That’s good. As usual we get a summary of what’s going to happen. Some things removed, some upgraded and some new things to come. It’s estimating the speed of download based on the fact I have a local mirror.
Do you want to start the upgrade?
15 installed packages are no longer supported by Canonical. You can
still get support from the community.
18 packages are going to be removed. 252 new packages are going to be
installed. 960 packages are going to be upgraded.
You have to download a total of 729 M. This download should take
about 1 minute with your connection.
Installing the upgrade can take several hours. Once the download has
finished, the process cannot be cancelled.
Continue [yN] Details [d]
Let’s hit “d” for fun. Normally I just hit “y” and let it rip. We have some packages which are no longer supported:
No longer supported: bzr dh-python dnsutils geoip-database ifenslave
ifupdown libdumbnet1 libegl1-mesa libncurses5 libncursesw5
libtinfo5 nmap python-dateutil uidmap vlan
Some which will be removed…
Remove: dstat libapt-inst2.0 libapt-pkg5.0 libcupscgi1 libcupsmime1
libcupsppdc1 libpolkit-backend-1-0 libsnmp30
Remove (was auto installed) libldb1 libmailutils5 libpython-stdlib
libsensors4 python python-keyrings.alt python-ldb python-minimal
python-samba python-tdb
… and a bunch which will be installed …
Install: alsa-topology-conf alsa-ucm-conf amd64-microcode
bind9-dnsutils bind9-libs bolt brz chafa cpp-9 cryptsetup-initramfs
cryptsetup-run finalrd fonts-urw-base35 fwupd fwupd-signed g++-9
gcc-10-base gcc-9 gcc-9-base gir1.2-packagekitglib-1.0
golang-1.13-go golang-1.13-race-detector-runtime golang-1.13-src
guile-2.2-libs intel-microcode iucode-tool kpartx libaio1
libappstream4 libapt-pkg6.0 libarchive13 libargon2-1
libarray-intspan-perl libasan5 libasync-mergepoint-perl
libboost-filesystem1.71.0 libboost-iostreams1.71.0
libboost-thread1.71.0 libbrotli1 libcanberra0 libcapnp-0.7.0
libcapture-tiny-perl libcbor0.6 libchafa0 libcommon-sense-perl
libconst-fast-perl libcontextual-return-perl libcpanel-json-xs-perl
libcrypt-dev libcrypt1 libctf-nobfd0 libctf0 libdbus-glib-1-2
libdevel-size-perl libdigest-bubblebabble-perl libdns-export1109
libefiboot1 libefivar1 libevent-2.1-7 libffi7 libfido2-1
libfile-find-rule-perl libfl2 libfont-ttf-perl libfuture-perl
libfwupd2 libfwupdplugin1 libgcab-1.0-0 libgcc-9-dev libgcc-s1
libgdbm6 libgfortran5 libgitlab-api-v4-perl libglib2.0-bin
libgpg-error-l10n libgstreamer1.0-0 libgutenprint-common
libgutenprint9 libhash-fieldhash-perl libhogweed5
libhttp-tiny-multipart-perl libicu66 libilmbase24 libimagequant0
libio-async-loop-epoll-perl libio-async-perl libio-prompter-perl
libip4tc2 libip6tc2 libisc-export1105 libisl22 libjs-sphinxdoc
libjs-underscore libjson-c4 libjson-maybexs-perl libjson-perl
libjson-xs-perl libldb2 liblinear4 liblinux-epoll-perl
liblist-someutils-perl liblist-someutils-xs-perl libllvm11 liblmdb0
liblog-any-adapter-screen-perl liblog-any-perl liblouis20
liblouisutdml9 liblvm2cmd2.03 libmagickcore-6.q16-6
libmagickcore-6.q16-6-extra libmagickwand-6.q16-6 libmailutils6
libmoox-aliases-perl libmoox-struct-perl libmysqlclient21
libncurses6 libncursesw6 libnet-dns-sec-perl libnettle7 libnftnl11
libntfs-3g883 libobject-id-perl libonig5 libopenexr24 libopenjp2-7
libpackagekit-glib2-18 libpcre2-8-0 libperl4-corelibs-perl
libperl5.30 libplymouth5 libpoppler-cpp0v5 libpoppler97 libprocps8
libprotobuf-lite17 libprotobuf17 libpython2-stdlib libpython3.8
libpython3.8-minimal libpython3.8-stdlib libqpdf26 librdmacm1
libre-engine-re2-perl libre2-5 libreadline8 libreadonly-perl
libref-util-perl libref-util-xs-perl libregexp-pattern-perl libsane
libsensors-config libsensors5 libsereal-decoder-perl
libsereal-encoder-perl libsereal-perl libsgutils2-2 libsmbios-c2
libsnmp35 libstdc++-9-dev libstemmer0d libstring-shellquote-perl
libstruct-dumb-perl libterm-readkey-perl libtest-fatal-perl
libtest-refcount-perl libtinfo6 libtorrent21 libtss2-esys0
libtype-tiny-perl libtype-tiny-xs-perl libtypes-serialiser-perl
libubsan1 libuchardet0 libunbound8 liburcu6 libuv1 libvorbisfile3
libvulkan1 libwant-perl libxcb-randr0 libxkbfile1
libxml-writer-perl libxmlb1 linux-generic linux-headers-5.4.0-67
linux-headers-5.4.0-67-generic linux-image-5.4.0-67-generic
linux-image-generic linux-modules-5.4.0-67-generic
linux-modules-extra-5.4.0-67-generic logsave lua-lpeg
lxd-agent-loader lz4 mesa-vulkan-drivers multipath-tools
nmap-common node-normalize.css packagekit packagekit-tools pci.ids
perl-modules-5.30 python-configparser python-entrypoints
python-is-python2 python2 python2-minimal python3-blinker
python3-breezy python3-crypto python3-deprecated python3-distro
python3-dnspython python3-dulwich python3-entrypoints
python3-fastimport python3-future python3-github python3-gitlab
python3-hamcrest python3-jwt python3-keyring python3-kiwisolver
python3-launchpadlib python3-lazr.restfulclient python3-lazr.uri
python3-ldb python3-markdown python3-oauthlib python3-packaging
python3-pexpect python3-ptyprocess python3-pygments python3-samba
python3-secretstorage python3-simplejson python3-talloc python3-tdb
python3-wadllib python3-wrapt python3.8 python3.8-minimal
sbsigntool secureboot-db sg3-utils sg3-utils-udev
sound-theme-freedesktop systemd-timesyncd thermald
thin-provisioning-tools tpm-udev usb.ids
With a load being upgraded too…
Upgrade: accountsservice acl acpid adduser adwaita-icon-theme apache2
apache2-bin apache2-data apache2-utils apparmor apport
apport-symptoms apt apt-transport-https apt-utils at at-spi2-core
attr avahi-daemon base-files base-passwd bash bash-completion bc
bcache-tools bind9-host binutils binutils-common
binutils-x86-64-linux-gnu bsdmainutils bsdutils btrfs-progs
build-essential busybox-initramfs busybox-static byobu bzip2 bzr
ca-certificates ca-certificates-java cloud-guest-utils
cloud-initramfs-copymods cloud-initramfs-dyn-netconf cockpit-bridge
cockpit-pcp colord colord-data command-not-found console-setup
console-setup-linux coreutils cpio cpp cpp-7 cron cryptsetup
cryptsetup-bin cups cups-browsed cups-client cups-common
cups-core-drivers cups-daemon cups-filters
cups-filters-core-drivers cups-ipp-utils cups-ppdc
cups-server-common curl dash dbus dbus-user-session dbus-x11
dconf-gsettings-backend dconf-service dctrl-tools debconf
debconf-i18n debianutils debmirror devscripts dh-python diffstat
diffutils dirmngr distro-info-data dmeventd dmidecode dmsetup
dns-root-data dnsmasq-base dnsutils dos2unix dosfstools dpkg
dpkg-dev dput e2fslibs e2fsprogs e2fsprogs-l10n ed eject ethtool
fakeroot fdisk file findutils fontconfig fontconfig-config
fonts-lyx fonts-noto-mono fonts-ubuntu-console
fonts-ubuntu-font-family-console friendly-recovery ftp fuse g++
g++-7 gawk gcc gcc-7 gcc-7-base gcc-8-base gcr gddrescue gdisk
geoip-database gettext gettext-base ghostscript gir1.2-glib-2.0 git
git-man glances glib-networking glib-networking-common
glib-networking-services gnupg gnupg-l10n gnupg-utils
golang-docker-credential-helpers golang-go
golang-race-detector-runtime golang-src
google-cloud-print-connector gpg gpg-agent gpg-wks-client
gpg-wks-server gpgconf gpgsm gpgv grep groff-base grub-common
grub-legacy-ec2 grub-pc grub-pc-bin grub2-common
gsettings-desktop-schemas gtk-update-icon-cache guile-2.0-libs gzip
hdparm hostname htop ibverbs-providers iftop ifupdown imagemagick
imagemagick-6-common imagemagick-6.q16 info init
init-system-helpers initramfs-tools initramfs-tools-bin
initramfs-tools-core install-info intltool-debian iotop iperf
iproute2 iptables iputils-arping iputils-ping iputils-tracepath
irqbalance isc-dhcp-client isc-dhcp-common iso-codes iw java-common
jq kbd keyboard-configuration klibc-utils kmod krb5-locales
landscape-common language-pack-en language-pack-en-base
language-selector-common less libaccountsservice0 libacl1
libalgorithm-diff-perl libalgorithm-diff-xs-perl libapparmor-perl
libapparmor1 libapr1 libaprutil1 libaprutil1-dbd-sqlite3
libaprutil1-ldap libapt-pkg-perl libarchive-zip-perl libargon2-0
libasan4 libasn1-8-heimdal libasound2 libasound2-data libassuan0
libatk-bridge2.0-0 libatk-wrapper-java libatk-wrapper-java-jni
libatk1.0-0 libatk1.0-data libatm1 libatomic1 libatspi2.0-0
libattr1 libaudit-common libaudit1 libavahi-client3
libavahi-common-data libavahi-common3 libavahi-core7 libavahi-glib1
libb-hooks-endofscope-perl libb-hooks-op-check-perl libbinutils
libblas3 libblkid1 libbluetooth3 libbsd0 libbz2-1.0 libc-bin
libc-dev-bin libc6 libc6-dev libcairo-gobject2 libcairo2 libcap-ng0
libcap2 libcap2-bin libcc1-0 libcephfs2 libcgi-fast-perl
libcgi-pm-perl libcilkrts5 libclass-method-modifiers-perl
libclass-xsaccessor-perl libclone-perl libcolord2 libcolorhug2
libcom-err2 libcomerr2 libcroco3 libcrypto++-dev libcrypto++6
libcryptsetup12 libcups2 libcupsfilters1 libcupsimage2
libcurl3-gnutls libcurl4 libdaemon0 libdatrie1 libdb5.3 libdbus-1-3
libdconf1 libdebconfclient0 libdevel-callchecker-perl
libdevmapper-event1.02.1 libdevmapper1.02.1 libdigest-hmac-perl
libdistro-info-perl libdjvulibre-text libdjvulibre21 libdpkg-perl
libdrm-amdgpu1 libdrm-common libdrm-intel1 libdrm-nouveau2
libdrm-radeon1 libdrm2 libdumbnet1 libedit2 libegl-mesa0 libegl1
libegl1-mesa libelf1 libepoxy0 liberror-perl libexif12 libexpat1
libexporter-tiny-perl libext2fs2 libfakeroot libfcgi-perl libfdisk1
libfftw3-double3 libfile-basedir-perl libfile-copy-recursive-perl
libfile-fcntllock-perl libfile-homedir-perl libfile-which-perl
libflac8 libfontconfig1 libfontembed1 libfontenc1 libfreetype6
libfribidi0 libfuse2 libgbm1 libgc1c2 libgcc-7-dev libgcc1
libgck-1-0 libgcr-base-3-1 libgcr-ui-3-1 libgcrypt20 libgd3
libgdbm-compat4 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-bin
libgdk-pixbuf2.0-common libgeoip1 libgetopt-long-descriptive-perl
libgfortran4 libgif7 libgirepository-1.0-1 libgit-wrapper-perl
libgl1 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libglib2.0-0
libglib2.0-data libglvnd0 libglx-mesa0 libglx0 libgmp10
libgnutls-openssl27 libgnutls30 libgomp1 libgpg-error0 libgpgme11
libgphoto2-6 libgphoto2-l10n libgphoto2-port12 libgraphite2-3
libgs9 libgs9-common libgsasl7 libgssapi-krb5-2 libgssapi3-heimdal
libgtk-3-0 libgtk-3-bin libgtk-3-common libgtk2.0-0
libgtk2.0-common libgudev-1.0-0 libgusb2 libharfbuzz0b
libhcrypto4-heimdal libheimbase1-heimdal libheimntlm0-heimdal
libhtml-form-perl libhtml-parser-perl libhtml-tagset-perl
libhtml-tree-perl libhttp-cookies-perl libhttp-daemon-perl
libhttp-date-perl libhttp-message-perl libhttp-negotiate-perl
libhx509-5-heimdal libibverbs1 libice-dev libice6 libidn11
libidn2-0 libieee1284-3 libijs-0.35 libio-pty-perl
libio-socket-ssl-perl libio-stringy-perl libipc-run-perl
libipc-system-simple-perl libiptc0 libisns0 libitm1 libiw30
libjansson4 libjbig2dec0 libjpeg-turbo8 libjq1 libjs-jquery
libjson-glib-1.0-0 libjson-glib-1.0-common libk5crypto3
libkeyutils1 libklibc libkmod2 libkrb5-26-heimdal libkrb5-3
libkrb5support0 libkyotocabinet16v5 liblapack3 liblcms2-2
libldap-2.4-2 libldap-common liblist-moreutils-perl libllvm10
liblocale-gettext-perl liblog-agent-perl liblouis-data
liblouisutdml-bin liblouisutdml-data liblsan0 libltdl7 liblua5.2-0
liblua5.3-0 liblwp-mediatypes-perl liblwp-protocol-https-perl
liblz4-1 liblzma5 liblzo2-2 libmagic-mgc libmagic1
libmailtools-perl libmaxminddb0 libmbim-glib4 libmbim-proxy
libmirclient9 libmircommon7 libmircore1 libmirprotobuf3 libmm-glib0
libmoo-perl libmount1 libmpdec2 libmpfr6 libmpx2 libmspack0
libncurses5 libncursesw5 libndp0 libnet-dns-perl libnet-http-perl
libnet-ip-perl libnet-libidn-perl libnet-ssleay-perl
libnetfilter-conntrack3 libnetplan0 libnewt0.52 libnfnetlink0
libnghttp2-14 libnl-3-200 libnl-genl-3-200 libnl-route-3-200 libnm0
libnpth0 libnspr4 libnss-mdns libnss-systemd libnss3 libntlm0
libnuma1 libogg0 libp11-kit0 libpackage-stash-perl
libpackage-stash-xs-perl libpam-modules libpam-modules-bin
libpam-runtime libpam-systemd libpam0g libpango-1.0-0
libpangocairo-1.0-0 libpangoft2-1.0-0 libpaper-utils libpaper1
libparams-classify-perl libparams-util-perl libparams-validate-perl
libparse-debianchangelog-perl libparted2 libpath-iterator-rule-perl
libpath-tiny-perl libpcap0.8 libpci3 libpciaccess0 libpcp-gui2
libpcp-import1 libpcp-mmv1 libpcp-pmda-perl libpcp-pmda3
libpcp-trace2 libpcp-web1 libpcp3 libpcre3 libpcsclite1
libperlio-gzip-perl libpfm4 libpipeline1 libpixman-1-0 libpng16-16
libpolkit-agent-1-0 libpolkit-gobject-1-0 libpopt0 libproxy1v5
libpsl5 libpthread-stubs0-dev libpulse0 libpython2.7
libpython2.7-minimal libpython2.7-stdlib libpython3-stdlib
libqmi-glib5 libqmi-proxy libquadmath0 librados2 libreadline5
libregexp-pattern-license-perl librest-0.7-0 libroken18-heimdal
librole-tiny-perl librsvg2-2 librsvg2-common librtmp1
libsane-common libsane1 libsasl2-2 libsasl2-modules
libsasl2-modules-db libseccomp2 libsecret-1-0 libsecret-common
libselinux1 libsemanage-common libsemanage1 libsepol1 libsigsegv2
libslang2 libsm-dev libsm6 libsmartcols1 libsndfile1 libsnmp-base
libsocket6-perl libsort-key-perl libsoup-gnome2.4-1 libsoup2.4-1
libsqlite3-0 libss2 libssh-4 libssl-dev libssl-doc libssl1.1
libstdc++-7-dev libstdc++6 libstrictures-perl
libstring-copyright-perl libsub-identify-perl libsub-name-perl
libsub-quote-perl libsystemd0 libtalloc2 libtasn1-6 libtcl8.6
libtdb1 libteamdctl0 libtevent0 libtext-charwidth-perl
libtext-iconv-perl libtext-wrapi18n-perl libthai-data libthai0
libtiff5 libtimedate-perl libtinfo5 libtk8.6 libtokyocabinet9
libtsan0 libubsan0 libudev1 libunbound-dev libunicode-utf8-perl
libunistring2 libunwind8 liburi-perl libusb-0.1-4 libusb-1.0-0
libutempter0 libuuid1 libvariable-magic-perl libvorbis0a
libvorbisenc2 libwayland-client0 libwayland-cursor0 libwayland-egl1
libwayland-egl1-mesa libwayland-server0 libwbclient0
libwind0-heimdal libwmf0.2-7 libwrap0 libwww-perl
libwww-robotrules-perl libx11-6 libx11-data libx11-dev libx11-doc
libx11-xcb1 libx86-1 libxau-dev libxau6 libxcb-dri2-0 libxcb-dri3-0
libxcb-glx0 libxcb-present0 libxcb-render0 libxcb-shape0
libxcb-shm0 libxcb-sync1 libxcb-xfixes0 libxcb1 libxcb1-dev
libxcomposite1 libxcursor1 libxdamage1 libxdmcp-dev libxdmcp6
libxext6 libxfixes3 libxft2 libxi6 libxinerama1 libxkbcommon0
libxml-libxml-perl libxml-parser-perl libxml-sax-expat-perl
libxml-sax-perl libxml-simple-perl libxml2 libxmlrpc-core-c3
libxmlsec1 libxmlsec1-openssl libxmu6 libxmuu1 libxrandr2
libxslt1.1 libxss1 libxtables12 libxxf86dga1 libxxf86vm1
libyaml-0-2 libyaml-libyaml-perl libzstd1 licensecheck lintian
linux-base linux-firmware linux-headers-generic linux-libc-dev
lm-sensors locales login logrotate lsb-base lsb-release lshw lsof
ltrace lvm2 lynx lynx-common mailutils mailutils-common make
makedev man-db manpages manpages-dev mawk mdadm mime-support
mlocate modemmanager mosh motd-news-config mount mtr-tiny mutt
mysql-common nano ncdu ncurses-base ncurses-bin ncurses-term
neofetch net-tools netbase netcat-openbsd netdiscover nethogs
netplan.io network-manager network-manager-pptp networkd-dispatcher
nmap nmon ntfs-3g open-iscsi open-vm-tools openjdk-8-jdk
openjdk-8-jdk-headless openjdk-8-jre openjdk-8-jre-headless
openssh-client openssh-server openssh-sftp-server openssl os-prober
overlayroot p0f parted passwd pastebinit patch pciutils pcp
pcp-conf perl perl-base perl-openssl-defaults pinentry-gnome3
pkg-config plymouth plymouth-theme-ubuntu-text pm-utils pngquant
policykit-1 pollinate poppler-data poppler-utils popularity-contest
postfix powermgmt-base ppp pptp-linux printer-driver-gutenprint
procps psmisc publicsuffix python-apt-common python-asn1crypto
python-cffi-backend python-crypto python-cryptography
python-dateutil python-dbus python-dnspython python-enum34
python-gi python-httplib2 python-idna python-ipaddress
python-keyring python-matplotlib-data python-oauth
python-pkg-resources python-simplejson python-six
python-zope.interface python2.7 python2.7-minimal python3
python3-apport python3-apt python3-asn1crypto python3-attr
python3-automat python3-bottle python3-certifi python3-cffi-backend
python3-chardet python3-click python3-colorama
python3-commandnotfound python3-configobj python3-constantly
python3-cryptography python3-cycler python3-dateutil python3-dbus
python3-debconf python3-debian python3-distro-info
python3-distupgrade python3-distutils python3-docker
python3-dockerpycreds python3-gdbm python3-gi python3-gpg
python3-httplib2 python3-hyperlink python3-idna python3-incremental
python3-influxdb python3-lib2to3 python3-magic python3-matplotlib
python3-minimal python3-netifaces python3-newt python3-numpy
python3-olefile python3-openssl python3-pam python3-pcp python3-pil
python3-pkg-resources python3-ply python3-problem-report
python3-psutil python3-pyasn1 python3-pyasn1-modules
python3-pycryptodome python3-pycurl python3-pyparsing python3-pysmi
python3-pysnmp4 python3-pystache python3-requests
python3-requests-unixsocket python3-serial python3-service-identity
python3-six python3-software-properties python3-systemd python3-tk
python3-twisted python3-twisted-bin python3-tz python3-unidiff
python3-update-manager python3-urllib3 python3-websocket
python3-xdg python3-yaml python3-zope.interface qpdf
readline-common rename resolvconf rsync rsyslog rtorrent samba
samba-common samba-common-bin samba-dsdb-modules samba-libs
samba-vfs-modules sane-utils screen sed sensible-utils sgml-base
shared-mime-info smartmontools snap-confine snapd
software-properties-common sosreport squashfs-tools ssh-import-id
strace sudo systemd systemd-sysv sysvinit-utils t1utils tar tasksel
tasksel-data tcpd tcpdump tdb-tools telnet tmux tree tzdata
ubuntu-advantage-tools ubuntu-cloudimage-keyring
ubuntu-core-launcher ubuntu-keyring ubuntu-minimal ubuntu-mono
ubuntu-release-upgrader-core ubuntu-server ubuntu-standard ucf udev
ufw uidmap unattended-upgrades unrar unzip update-inetd
update-manager-core update-notifier-common uptimed usb-modeswitch
usb-modeswitch-data usbutils util-linux uuid-runtime vim vim-common
vim-runtime vim-tiny vlan vnstat w3m wamerican wdiff wget whiptail
wireless-regdb wireless-tools wpasupplicant x11-common x11-utils
x11proto-core-dev x11proto-dev xauth xdg-user-dirs xfsprogs
xkb-data xml-core xtrans-dev xxd xz-utils zerofree zlib1g
After this I hit “y” to start the upgrade.
We’re off! Hundreds of packages downloading at ~10-14MB/s. Wheeee!
Get:540 http://192.168.1.8/ubuntu focal/main amd64 python3-requests all 2.22.0-2ubuntu1 [47.1 kB]
Get:541 http://192.168.1.8/ubuntu focal-updates/main amd64 python3-urllib3 all 1.25.8-2ubuntu0.1 [88.3 kB]
Get:542 http://192.168.1.8/ubuntu focal/main amd64 python3-requests-unixsocket all 0.2.0-2 [7,272 B]
Get:543 http://192.168.1.8/ubuntu focal-updates/main amd64 python3-apport all 2.20.11-0ubuntu27.16 [84.9 kB]
Get:544 http://192.168.1.8/ubuntu focal-updates/main amd64 apport all 2.20.11-0ubuntu27.16 [129 kB]
Get:545 http://192.168.1.8/ubuntu focal/main amd64 libfl2 amd64 2.6.4-6.2 [11.5 kB]
Get:546 http://192.168.1.8/ubuntu focal/main amd64 at amd64 3.1.23-1ubuntu1 [38.7 kB]
Get:547 http://192.168.1.8/ubuntu focal/main amd64 gawk amd64 1:5.0.1+dfsg-1 [418 kB]
Get:548 http://192.168.1.8/ubuntu focal-updates/main amd64 bcache-tools amd64 1.0.8-3ubuntu0.1 [19.5 kB]
28% [Waiting for headers] 14 MB/s 20s
The upgrade chugged along for a while, and once complete I had to reboot again, into the new release.
System upgrade is complete.
Restart required
To complete the upgrade, a system restart is required.
If you select 'y' the system will be restarted.
Continue [yN]
Boom! It worked
alan@robby:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
Even better, the python script I had trouble with, which made me need to upgrade in the first place, works!