OMV 5.5.11 removed after installing ntp

Hello,

I installed openmediavault_5.5.11-amd64.iso from the official ISO on a VM, it worked fine for months until last week where I simply ran "apt install ntp" and apt fully removed OMV from my system after chrony was removed. Now running any apt command will try to uninstall dozens of related OMV packages.

There was no custom modification on the server.

Can someone help me understand what exactly happened and how can I prevent it happen in the future?

I have live traffic on this server and luckily NFS and SMB services are still up and functioning but I am afraid to do a reboot now and don't know how I can recover and reinstall without the risk of losing data.

Also, If I do reinstall the services (NFS,SMB,..) will have to be restarted and current connections will drop correct?

apt term log:

Log started: 2021-09-14  16:34:16
(Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
...
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 55448 files and directories currently installed.)
Removing openmediavault-snmp (5.0.2-1) ...
Removing openmediavault (5.6.2-1) ...
Removing chrony (3.4-4+deb10u1) ...
Selecting previously unselected package libopts25:amd64.
(Reading database ... 
(Reading database ... 5%
(Reading database ... 10%

apt history log

Start-Date: 2021-09-14  16:34:16
Commandline: apt install -y ntp
Install: ntp:amd64 (1:4.2.8p12+dfsg-4), libopts25:amd64 (1:5.18.12-4, automatic)
Remove: openmediavault-snmp:amd64 (5.0.2-1), chrony:amd64 (3.4-4+deb10u1), openmediavault:amd64 (5.6.2-1)
End-Date: 2021-09-14  16:34:29

EIPP log

Request: EIPP 0.1
Architecture: amd64
Architectures: amd64
Remove: openmediavault-snmp:amd64 chrony:amd64 openmediavault:amd64
Install: ntp:amd64 libopts25:amd64
Planner: internal

I also have this in my Syslog that might be relevant

Sep 24 04:40:01 xxx cron-apt: E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
Sep 24 04:40:01 xxx cron-apt: E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable'
Sep 24 04:40:01 xxx cron-apt: E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates'

I see, thank you for the explanation, I guess I should be more careful with the "-y" switch from now on.

I managed to get everything back to exactly how it was before, it was much less challenging than I imagined it would be.

I started by installing OMV, it installed fully but gave me an error in the post install script, after that, I did apt update and upgrade, this time it did not try to remove anything like before. then did "omv-confdbadm populate" just to be safe and install OMV another time, this time I didn't get the post-install script error and it completed successfully. I was able to reach the web GUI but had a socket error when trying to log in.

Then the only thing I had to do was to manually unmask openmediavault-engined. All my settings remained intact, storage paths were there and identified and services were running without even needing a restart.

apt install openmediavault
export LANG=C.UTF-8
export DEBIAN_FRONTEND=noninteractive
export APT_LISTCHANGES_FRONTEND=none
apt update
apt-get --yes --auto-remove --show-upgraded     --allow-downgrades --allow-change-held-packages     --no-install-recommends     --option DPkg::Options::="--force-confdef"     --option DPkg::Options::="--force-confold"     install openmediavault-keyring openmediavault
omv-confdbadm populate
apt-get --yes --auto-remove --show-upgraded     --allow-downgrades --allow-change-held-packages     --no-install-recommends     --option DPkg::Options::="--force-confdef"     --option DPkg::Options::="--force-confold"     install openmediavault-keyring openmediavault
apt-get upgrade
systemctl status openmediavault-engined
systemctl unmask openmediavault-engined
systemctl status openmediavault-engined
systemctl restart openmediavault-engined

During this entire operation, all my NFS clients stayed connected and were not interrupted at all. Amazing!

Thank you for your quick and effective support. The product and the community are truly amazing.