[Bug 2139685] [NEW] multipath error during installation on 24.04 daily

[Frank Heimes]

Public bug reported:

While trying to install the latest daily of 24.04 (still .3 but daily
from 02.02.) on a multipath disk setup on an s390x system, that has an
older 26.04 on it (trying to reinstall the system on 24.04) the
installer crashed.

 [  222.879605] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
 [  222.879609] device-mapper: ioctl: error adding target to table
 [  222.924093] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
 [  222.924097] device-mapper: ioctl: error adding target to table
 [  222.927398] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
 [  222.927401] device-mapper: ioctl: error adding target to table
 [  222.930725] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
 [  222.930728] device-mapper: ioctl: error adding target to table
...

 Feb 03 13:45:26 ubuntu-server kernel: device-mapper: table: 252:1: multipath: error gettin
g device (-EBUSY)
 Feb 03 13:45:26 ubuntu-server kernel: device-mapper: ioctl: error adding target to table
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: dm_addmap: libdm task=0 error: Device or resource busy
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: ignoring map
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: addmap [0 402653184 multipath 1 queue_if_no_path 1 alua 1 1 service-time 0 4 1 8:32 1 8:48 1 8:0 1 8:16 1]
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: libdevmapper: ioctl/libdm-iface.c(1990): device-mapper: reload ioctl on mpatha (252:1) failed: Device or resource busy
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: dm_addmap: libdm task=0 error: Device or resource busy
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: ignoring map
 Feb 03 13:45:26 ubuntu-server systemd[1]: Finished systemd-sysusers.service - Create System Users.
 Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: addmap [0 402653184 multipath 1 queue_if_no_path 1 alua 1 1 service-time 0 4 1 8:32 1 8:48 1 8:0 1 8:16 1]

** Affects: ubuntu-z-systems
     Importance: High
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New

** Affects: subiquity (Ubuntu)
     Importance: High
         Status: New


** Tags: s390x

** Attachment added: "logs-03.02.2026.tgz"
   https://bugs.launchpad.net/bugs/2139685/+attachment/5942469/+files/logs-03.02.2026.tgz

** Also affects: subiquity
   Importance: Undecided
       Status: New

** No longer affects: subiquity

** Also affects: ubuntu-z-systems
   Importance: Undecided
       Status: New

** Changed in: ubuntu-z-systems
   Importance: Undecided => Medium

** Changed in: ubuntu-z-systems
   Importance: Medium => High

** Changed in: ubuntu-z-systems
     Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)

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https://bugs.launchpad.net/bugs/2139685

Title:
  multipath error during installation on 24.04 daily

Status in Ubuntu on IBM z Systems:
  New
Status in subiquity package in Ubuntu:
  New

Bug description:
  While trying to install the latest daily of 24.04 (still .3 but daily
  from 02.02.) on a multipath disk setup on an s390x system, that has an
  older 26.04 on it (trying to reinstall the system on 24.04) the
  installer crashed.

   [  222.879605] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
   [  222.879609] device-mapper: ioctl: error adding target to table
   [  222.924093] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
   [  222.924097] device-mapper: ioctl: error adding target to table
   [  222.927398] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
   [  222.927401] device-mapper: ioctl: error adding target to table
   [  222.930725] device-mapper: table: 252:1: multipath: error getting device (-EBUSY)
   [  222.930728] device-mapper: ioctl: error adding target to table
  ...

   Feb 03 13:45:26 ubuntu-server kernel: device-mapper: table: 252:1: multipath: error gettin
  g device (-EBUSY)
   Feb 03 13:45:26 ubuntu-server kernel: device-mapper: ioctl: error adding target to table
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: dm_addmap: libdm task=0 error: Device or resource busy
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: ignoring map
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: addmap [0 402653184 multipath 1 queue_if_no_path 1 alua 1 1 service-time 0 4 1 8:32 1 8:48 1 8:0 1 8:16 1]
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: libdevmapper: ioctl/libdm-iface.c(1990): device-mapper: reload ioctl on mpatha (252:1) failed: Device or resource busy
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: dm_addmap: libdm task=0 error: Device or resource busy
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: ignoring map
   Feb 03 13:45:26 ubuntu-server systemd[1]: Finished systemd-sysusers.service - Create System Users.
   Feb 03 13:45:26 ubuntu-server multipathd[1247]: mpatha: addmap [0 402653184 multipath 1 queue_if_no_path 1 alua 1 1 service-time 0 4 1 8:32 1 8:48 1 8:0 1 8:16 1]

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