Comment 13 for bug 1987387

------- Comment From <email address hidden> 2022-12-02 10:59 EDT-------
I installed Ubuntu 20.04.5 with latest updates.
s390-tools version was 2.12.0-0ubuntu3.6

I enabled -proposed repo (unsigned) and updated to 2.12.0-0ubuntu3.7:

root@a3515006:~# apt-get install s390-tools/focal-proposed
Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '2.12.0-0ubuntu3.7' (Ubuntu:20.04/focal-proposed [s390x]) for 's390-tools'
The following packages were automatically installed and are no longer required:
apport-symptoms libfwupdplugin1 libxmlb1 python3-apport
python3-problem-report python3-systemd
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
s390-tools-signed
Suggested packages:
s390-tools-cpuplugd s390-tools-osasnmpd s390-tools-statd lsscsi
The following packages will be upgraded:
s390-tools s390-tools-signed
2 upgraded, 0 newly installed, 0 to remove and 34 not upgraded.
Need to get 1255 kB of archives.
After this operation, 4096 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://ports.ubuntu.com/ubuntu-ports focal-proposed/main s390x s390-tools s390x 2.12.0-0ubuntu3.7 [1248 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports focal-proposed/main s390x s390-tools-signed s390x 2.12.0-0ubuntu3.7 [6916 B]
Fetched 1255 kB in 0s (5456 kB/s)
(Reading database ... 85300 files and directories currently installed.)
Preparing to unpack .../s390-tools_2.12.0-0ubuntu3.7_s390x.deb ...
Unpacking s390-tools (2.12.0-0ubuntu3.7) over (2.12.0-0ubuntu3.6) ...
Preparing to unpack .../s390-tools-signed_2.12.0-0ubuntu3.7_s390x.deb ...
Unpacking s390-tools-signed (2.12.0-0ubuntu3.7) over (2.12.0-0ubuntu3.6) ...
Setting up s390-tools-signed (2.12.0-0ubuntu3.7) ...
Setting up s390-tools (2.12.0-0ubuntu3.7) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for systemd (245.4-4ubuntu3.19) ...

Multivolume dump information is now shown correctly:

root@a3515006:~# lsdasd
Bus-ID Status Name Device Type BlkSz Size Blocks
================================================================================
0.0.6b14 active dasda 94:0 ECKD 4096 42259MB 10818360
0.0.6b17 active dasdb 94:4 ECKD 4096 21129MB 5409180
0.0.6b15 active dasdc 94:8 ECKD 4096 42259MB 10818360
0.0.6b16 active dasdd 94:12 ECKD 4096 21129MB 5409180
root@a3515006:~# zgetdump -i /dev/dasdc
General dump info:
Dump format........: s390mv_ext
Version............: 1
Dump created.......: Fri, 02 Dec 2022 15:46:49 +0000
Dump ended.........: Fri, 02 Dec 2022 15:47:00 +0000
Dump CPU ID........: ff0f5dc839318000
UTS node name......: a3515006.lnxne.boe
UTS kernel release.: 5.4.0-135-generic
UTS kernel version.: #152-Ubuntu SMP Wed Nov 23 21:05:01 UTC 2022
Build arch.........: s390x (64 bit)
System arch........: s390x (64 bit)
CPU count (online).: 16
CPU count (real)...: 16
Dump memory range..: 16384 MB
Real memory range..: 16384 MB
Dump file size.....: 1037 MB

Memory map:
0000000000000000 - 00000003ffffffff (16384 MB)

Dump device info:
Volume 0: 0.0.6b15 (online/active)
Volume 1: 0.0.6b16 (online/valid)
root@a3515006:~#

------- Comment From <email address hidden> 2022-12-02 11:01 EDT-------
Which confirms Frank's verification also at IBM side.