ubuntu@ip-172-31-37-196:~$ systemctl status multipathd
● multipathd.service - Device-Mapper Multipath Device Controller
     Loaded: loaded (/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2023-08-31 15:08:41 UTC; 8min ago
TriggeredBy: ● multipathd.socket
   Main PID: 161 (multipathd)
     Status: "up"
      Tasks: 7
     Memory: 22.1M
        CPU: 95ms
     CGroup: /system.slice/multipathd.service
             └─161 /sbin/multipathd -d -s

Aug 31 15:08:41 ubuntu systemd[1]: Starting Device-Mapper Multipath Device Controller...
Aug 31 15:08:41 ubuntu multipathd[161]: --------start up--------
Aug 31 15:08:41 ubuntu multipathd[161]: read /etc/multipath.conf
Aug 31 15:08:41 ubuntu multipathd[161]: path checkers start up
Aug 31 15:08:41 ubuntu systemd[1]: Started Device-Mapper Multipath Device Controller.
ubuntu@ip-172-31-37-196:~$ sudo apt install -y multipath-tools
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  kpartx
Suggested packages:
  multipath-tools-boot
The following packages will be upgraded:
  kpartx multipath-tools
2 upgraded, 0 newly installed, 0 to remove and 40 not upgraded.
Need to get 359 kB of archives.
After this operation, 3072 B disk space will be freed.
Get:1 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 kpartx amd64 0.8.8-1ubuntu1.22.04.2 [28.7 kB]
Get:2 http://archive.ubuntu.com/ubuntu jammy-proposed/main amd64 multipath-tools amd64 0.8.8-1ubuntu1.22.04.2 [331 kB]
Fetched 359 kB in 4s (98.0 kB/s)        
(Reading database ... 64725 files and directories currently installed.)
Preparing to unpack .../kpartx_0.8.8-1ubuntu1.22.04.2_amd64.deb ...
Unpacking kpartx (0.8.8-1ubuntu1.22.04.2) over (0.8.8-1ubuntu1.22.04.1) ...
Preparing to unpack .../multipath-tools_0.8.8-1ubuntu1.22.04.2_amd64.deb ...
Unpacking multipath-tools (0.8.8-1ubuntu1.22.04.2) over (0.8.8-1ubuntu1.22.04.1) ...
Setting up kpartx (0.8.8-1ubuntu1.22.04.2) ...
Setting up multipath-tools (0.8.8-1ubuntu1.22.04.2) ...
Could not execute systemctl:  at /usr/bin/deb-systemd-invoke line 142.
Removing obsolete conffile /etc/init.d/multipath-tools ...
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.1) ...
Scanning processes...                                                                                                                                          
Scanning candidates...                                                                                                                                         
Scanning linux images...                                                                                                                                       

Running kernel seems to be up-to-date.

Restarting services...
 systemctl restart multipathd.service

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.
ubuntu@ip-172-31-37-196:~$ systemctl status multipathd
● multipathd.service - Device-Mapper Multipath Device Controller
     Loaded: loaded (/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled)
     Active: active (running) since Thu 2023-08-31 15:17:13 UTC; 6s ago
TriggeredBy: ○ multipathd.socket
    Process: 2914 ExecStartPre=/sbin/modprobe -a scsi_dh_alua scsi_dh_emc scsi_dh_rdac dm-multipath (code=exited, status=0/SUCCESS)
   Main PID: 2915 (multipathd)
     Status: "up"
      Tasks: 7
     Memory: 18.3M
        CPU: 25ms
     CGroup: /system.slice/multipathd.service
             └─2915 /sbin/multipathd -d -s

Aug 31 15:17:13 ip-172-31-37-196 systemd[1]: Starting Device-Mapper Multipath Device Controller...
Aug 31 15:17:13 ip-172-31-37-196 multipathd[2915]: --------start up--------
Aug 31 15:17:13 ip-172-31-37-196 multipathd[2915]: read /etc/multipath.conf
Aug 31 15:17:13 ip-172-31-37-196 multipathd[2915]: path checkers start up
Aug 31 15:17:13 ip-172-31-37-196 systemd[1]: Started Device-Mapper Multipath Device Controller.