Ubiquity crashes on grub installation on brtfs/raid

[Drew Walton]

Installing from latest Disco daily image, Ubiquity crashes when installing Grub in the installed system. Unsure if related to my filesystem layout, which Ubiquity does not natively support.

/dev/sdc2 ext4 /boot
/dev/sdc3 and /dev/sdd1 btrfs (-d raid0) /
/dev/sdc4 swap

In order to install to a raid0 btrfs set, I had to manually create the partition with mkfs.btrfs and tell Ubiquity not to format the partition.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubiquity 19.04.5
ProcVersionSignature: Ubuntu 4.19.0-13.14-generic 4.19.20
Uname: Linux 4.19.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu21
Architecture: amd64
CasperVersion: 1.402
Date: Wed Feb 27 20:27:59 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190226)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Drew Walton (drewwalton19216801)]

Yep, looks like Ubiquity really hates BTRFS raid. Reinstalling with a single non-raid BTRFS partition (which I plan to later convert to raid0) works just fine.