Comment 0 for bug 1848496

On a 19.10 (pre-release, 20191016 daily) zfs installation, running 'os-prober' (as 'update-grub' does by default) triggers the following error message:

x@x:~$ sudo os-prober; echo $?
device-mapper: reload ioctl on osprober-linux-sda5 failed: Device or resource busy
Command failed.
0
x@x:~$

The exit code is 0, so update-grub does not fail as a result.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: os-prober 1.74ubuntu2
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 17 14:19:59 2019
InstallationDate: Installed on 2019-10-17 (0 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191016.5)
SourcePackage: os-prober
UpgradeStatus: No upgrade log present (probably fresh install)