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Fix the failing openSUSE Leap 15 Upgrade from Leap 42.3 with encrypted partitions (bug 1094963)

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openSUSE Leap 15 Upgrade Fix

Problem Description

If you boot the Leap 15 installation media and want to upgrade from Leap 42.3 to Leap 15 with encrypted partitions, then you likely run into the following bug:
https://bugzilla.suse.com/show_bug.cgi?id=1094963

It throws an exception right when selecting the distro to be upgraded:

Details: Storage::Exception
Caller:/mounts/mp_0001/usr/share/YaST2/lib/y2storage/storage_class_wrapper.rb:260: in `find_by_any_name`

Bug Screenshot

YaST cannot associate the /dev/mapper/cr_* paths from /etc/fstab to automatically detected volumes.

Workaround in Release Notes

There is a preferred workaround in the release notes:
https://doc.opensuse.org/release-notes/x86_64/openSUSE/Leap/15.0/#sec.upgrade.encrypted-disk

Building the Fix

Only updated YaST2 and libstorage-ng files can actually fix the bug. So I have prepared a Driver Update Disk (DUD) y2lp15.dud here with files which were latest on 2018-11-29.

File source: http://download.opensuse.org/update/leap/15.0/oss/x86_64/

File list:

libstorage-ng1-3.3.315-lp150.2.9.1.x86_64.rpm
libstorage-ng-python3-3.3.315-lp150.2.9.1.x86_64.rpm
libstorage-ng-ruby-3.3.315-lp150.2.9.1.x86_64.rpm
libstorage-ng-utils-3.3.315-lp150.2.9.1.x86_64.rpm
yast2-4.0.87-lp150.2.9.1.x86_64.rpm
yast2-bootloader-4.0.39-lp150.2.8.1.x86_64.rpm
yast2-core-4.0.4-lp150.2.6.1.x86_64.rpm
yast2-storage-ng-4.0.214-lp150.2.15.1.x86_64.rpm
yast2-update-4.0.18-lp150.2.6.1.x86_64.rpm

Command used to build the DUD:

mkdud --create y2lp15.dud --dist leap15.0 --name "Upgrade fix boo#1094963" for-lp15-dud/*

Command to show its contents:

mkdud --show y2lp15.dud

Applying the DUD via Network

Select the upgrade and use the following upgrade boot options:

dud=ftp://your_ftpserver/y2lp15.dud insecure=1

Applying DUDs via network (http/ftp) is preferred. I use a Raspberry Pi 2 on my desk as my DUD FTP server. DUDs for openSUSE are never signed (no y2lp15.dud.asc). So the option insecure=1 is required here to avoid a warning.
If you want to know what the installation initrd linuxrc is doing and if it applies the DUD properly, then press Esc when the green bar is visible at the bottom pretending that some progress is going on. You can also add the startshell=1 boot option to get more control.

I have tested this method. Using this DUD fixes this bug for me.

Applying the DUD from USB automatically

Besides network install, it is also possible to extract DUDs to the root of a filesystem which supports symlinks like e.g. ext3. DUDs are cpio.gz archives. Let us assume I have a USB stick with only one ext3 partition mounted to /mnt.

Then I use the following commands as root:

cp y2lp15.dud /mnt; cd /mnt
zcat y2lp15.dud | cpio -idmv
cd ~; umount /mnt

A directory linux should appear. linuxrc is looking for that directory on all USB partitions and picks up the DUD automatically this way. The option dud=1 can make this more visible.

Tested in affected QEMU/KVM VM with emulated SATA disk + LUKS and extracted DUD on USB stick. Works.

Building a new Installation ISO with DUD

With the tool mksusecd it is possible to build a new ISO based on the regular installation ISO which applies the DUD fully automatically. Using the new ISO is pretty idiot-proof.

Example build command:

sudo mksusecd --create openSUSE-Leap-15.0-DVD-x86_64-boo1094963.iso \
--initrd y2lp15.dud -- ./openSUSE-Leap-15.0-DVD-x86_64.iso

Tested in affected QEMU/KVM VM with emulated SATA disk + LUKS. Works.

Getting mkdud and mksusecd

mkdud: https://github.com/openSUSE/mkdud
mksusecd: https://github.com/openSUSE/mksusecd

Just clone those repositories and use sudo make install to install the tools. For mksusecd install the packages squashfs and createrepo as well.

Applying the DUD from CD/DVD-ROM (or USB) manually

For the unlikely case that a CD/DVD-ROM drive is available which is not blocked by the regular installation media, then it is possible to burn the y2lp15.dud (e.g. with Brasero) to a CD-R or into a .iso image.

The upgrade boot option dud=disk:/y2lp15.dud triggers that linuxrc is looking for the DUD on all CD/DVD-ROM drives and USB partitions.

Note: Automatic applying is reserved to kernel module DUDs provided by SUSE partners only. So often it is better to directly create a new installation ISO together with the DUD with the help of mksusecd.

Tested in affected QEMU/KVM VM with emulated SATA disk + LUKS and second CD-ROM drive. Also tested with compressed DUD on USB stick instead. Works.

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