Installer crashed while installing Ubuntu 15.04 to a ZFS zvol

[Matthew X. Economou]

I am trying to install Ubuntu 15.04 to a LUKS-encrypted ZFS pool, but the installer won't let me skip partitioning. To work around this, I created a 16-GiB zvol named temproot (/dev/zd16), and I partitioned that like one would a regular hard disk.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.25
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
NonfreeKernelModules: wl zfs zunicode zcommon znvpair zavl
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CasperVersion: 1.360
Date: Fri May 15 10:05:13 2015
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper nomodeset ---
LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)