New partition table, create 538M EFI and the rest BTRFS, input/output error at timezone

[rud]

Trying to do a clean install, I get the same issue even after replacing the nvme SSD with the 21.04 Ubuntu Budgie image on a USB stick: something with fsync input/output error.

This happens after selecting "Something else", creating a new partition table with a 538MB EFI partition and all available space a BTRFS partition, checked "format" and selected "/" as mountpoint.

Hit next, select timezone (I had no internet connection so had to select my timezone manually) and now the error pops up. A bit later the installer crashes.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: ubiquity 21.04.19
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.461
CurrentDesktop: Budgie
Date: Wed Jun 9 09:41:57 2021
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-budgie.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu-Budgie 21.04 "Hirsute Hippo" - Release amd64 (20210420)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.