Public bug reported:
When trying to upgrade my Kubuntu 18.04 to Kubuntu 20.04 by running
sudo do-release-upgrade -d
I get at a point where the installer reads:
...
File descriptor 3 (pipe:[366994]) leaked on vgs invocation. Parent ID
31982: /usr/sbin/grub-probe
...
grub-probe: error: unknown filesystem.
File descriptor 3 (pipe:[366994]) leaked on vgs invocation. Parent ID
31982: /usr/sbin/grub-probe
...
Found Ubuntu 18.04.4 LTS (18.04) on dev/,apper/kubuntu--vg-snap
Adding boot menu entry for EFI firmware configuration
done
...
At this point the installer hangs for at least 35 min. Killing it and
restarting leads to a kernel panic.
This is on a laptop with lvm2, using an lvm snapshot before the upgrade
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1887373
Title:
upgrade from 18.04 to 20.04 hangs on lvm2 snapshot
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