Verification: 1. check old behavior. I did so twice with a sleep in between to show that it resets the unit and the time root@j-vm:~# apt-cache policy qemu-block-extra; apt install -y --reinstall qemu-block-extra; systemctl status run-qemu.mount; ls -laF /run/qemu/ qemu-block-extra: Installed: 1:6.2+dfsg-2ubuntu6.16 Candidate: 1:6.2+dfsg-2ubuntu6.16 Version table: *** 1:6.2+dfsg-2ubuntu6.16 500 500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 100 /var/lib/dpkg/status 1:6.2+dfsg-2ubuntu6 500 500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages Reading package lists... Done Building dependency tree... Done Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 68.1 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 qemu-block-extra amd64 1:6.2+dfsg-2ubuntu6.16 [68.1 kB] Fetched 68.1 kB in 0s (460 kB/s) (Reading database ... 72988 files and directories currently installed.) Preparing to unpack .../qemu-block-extra_1%3a6.2+dfsg-2ubuntu6.16_amd64.deb ... Unpacking qemu-block-extra (1:6.2+dfsg-2ubuntu6.16) over (1:6.2+dfsg-2ubuntu6.16) ... Setting up qemu-block-extra (1:6.2+dfsg-2ubuntu6.16) ... Scanning processes... Scanning linux images... Running kernel seems to be up-to-date. No services need to be restarted. 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 No user sessions are running outdated binaries. No VM guests are running outdated hypervisor (qemu) binaries on this host. ● run-qemu.mount - Prepare /run/qemu to allow still running qemu binaries of former builds (after package upgrades) to fallback-load modules from there Loaded: loaded (/proc/self/mountinfo; enabled; vendor preset: enabled) Active: active (mounted) since Mon 2024-02-05 10:39:27 UTC; 2s ago Where: /run/qemu What: tmpfs Tasks: 0 (limit: 1171) Memory: 8.0K CPU: 2ms CGroup: /system.slice/run-qemu.mount Feb 05 10:39:27 j-vm systemd[1]: Mounting Prepare /run/qemu to allow still running qemu binaries of former builds (after package upgrades) to fallback-load modules from there... Feb 05 10:39:27 j-vm systemd[1]: Mounted Prepare /run/qemu to allow still running qemu binaries of former builds (after package upgrades) to fallback-load modules from there. total 0 drwxr-xr-x 2 root root 40 Feb 5 10:39 ./ drwxr-xr-x 29 root root 840 Feb 5 10:38 ../ root@j-vm:~# root@j-vm:~# sleep 10s root@j-vm:~# apt-cache policy qemu-block-extra; apt install -y --reinstall qemu-block-extra; systemctl status run-qemu.mount; ls -laF /run/qemu/ qemu-block-extra: Installed: 1:6.2+dfsg-2ubuntu6.16 Candidate: 1:6.2+dfsg-2ubuntu6.16 Version table: *** 1:6.2+dfsg-2ubuntu6.16 500 500 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 100 /var/lib/dpkg/status 1:6.2+dfsg-2ubuntu6 500 500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages Reading package lists... Done Building dependency tree... Done Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 68.1 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 qemu-block-extra amd64 1:6.2+dfsg-2ubuntu6.16 [68.1 kB] Fetched 68.1 kB in 0s (414 kB/s) (Reading database ... 72988 files and directories currently installed.) Preparing to unpack .../qemu-block-extra_1%3a6.2+dfsg-2ubuntu6.16_amd64.deb ... Unpacking qemu-block-extra (1:6.2+dfsg-2ubuntu6.16) over (1:6.2+dfsg-2ubuntu6.16) ... Setting up qemu-block-extra (1:6.2+dfsg-2ubuntu6.16) ... Scanning processes... Scanning linux images... Running kernel seems to be up-to-date. No services need to be restarted. 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. ● run-qemu.mount - Prepare /run/qemu to allow still running qemu binaries of former builds (after package upgrades) to fallback-load modules from there Loaded: loaded (/proc/self/mountinfo; enabled; vendor preset: enabled) Active: active (mounted) since Mon 2024-02-05 10:40:29 UTC; 2s ago Where: /run/qemu What: tmpfs Tasks: 0 (limit: 1171) Memory: 8.0K CPU: 2ms CGroup: /system.slice/run-qemu.mount Feb 05 10:40:29 j-vm systemd[1]: Mounting Prepare /run/qemu to allow still running qemu binaries of former builds (after package upgrades) to fallback-load modules from there... Feb 05 10:40:29 j-vm systemd[1]: Mounted Prepare /run/qemu to allow still running qemu binaries of former builds (after package upgrades) to fallback-load modules from there. total 0 drwxr-xr-x 2 root root 40 Feb 5 10:40 ./ drwxr-xr-x 29 root root 840 Feb 5 10:38 ../