Surprisingly Smooth Upgrade 7 -> 8

I can only confirm this. This morning I saw OMV8 was released, so I did upgrade my Beelink ME mini. I had made an image of the boot disk just to be sure. No issues to report.

I did the upgrade on my vm install with the release candidate to see what would happen last week, that was also a smooth upgrade.

I'd like to add my thanks too. I just upgraded and everything seems to be running well.

Just did a full backup of my system drive before running the upgrade.

All went well and smooth. (no need to run fix7to8upgrade)

Many thanks to Volker and Aaron for all their work.

The upgrade from OMV7 to OMV8 worked perfectly for me. Thanks Guys!

The upgrade from OMV7 to OMV8 worked perfectly for me. No Problems

Did you also upgrade the OS?

In what order ? First OS, then OMV or other way around? First OMV, then OS?

Great thank you so much.

"Surprisingly smooth" seems a bit rude to votdev and other contributors, as well as all the Debian maintainers. Anyway, my two upgrades also went well. Thanks!

only had one niggle, got this email:

/etc/cron.daily/openmediavault-mdadm:
mdadm: DeviceDisappeared event detected on md device /dev/md/md0
mdadm: NewArray event detected on md device /dev/md0

turned out mdadm --monitor --scan --oneshot gave the same output. I checked my md array, nothing was wrong with that. After googling I found this workaround:

edit /etc/udev/rules.d/99-openmediavault-md-raid.rules

SUBSYSTEM=="block", KERNEL=="md*", ACTION=="add|change", TEST=="md/stripe_cache_size", ATTR{md/stripe_cache_size}="8192", SYMLINK+="md/md0"

I've added the bold statements and now I don't get DeviceDisappeared event notifications anymore.

found solution here: https://discourse.ubuntu.com/t…red-newarray-alerts/56076

more background info here: https://linux.debian.bugs.dist…ssage-every-day-from-cron

Last night updated from OMV 7 to OMV 8. No issues whatsoever.

I have updated on my Fujitsu Futro s920 from 7.x to 8.0.2 without any issues.

Samba, NFS, dockers are working fine.

Thx for another version of great NAS system.

Hy guys. I planned to do my first release upgrade from OMV7 to 8 in 2026, since OMV7 is so stable, but I just couldn't resist doing it today, Boxing Day...

a.) The system: current OMV-7 on a Raspberry Pi 5 8GB and Raspberry OS-lite with an externally powered SATA enclosure (icybox)

b.) Backup of all data (using OMV-USB-backup) to an external hard drive.

c.) Update OMV7 to the latest version with `sudo omv-upgrade`

d.) Create a backup of the OMV system SD card

e.) I thought it would be a good idea to connect a monitor and keyboard (I later read that there are no problems with an upgrade via SSH)

f.) Log in and switch to `su`. Then: `omv-release-upgrade`

g.) Upgrade running... finishing... manual reboot.

h.) 8.0.2-2 (Synchrony) is running

Guys, I want to thank everyone involved. OMV is the best NAS for me (system & support). And I know what I'm talking about, because I previously had a Synology that suddenly stopped receiving updates...

Was I surprised? not really

There is one thing left, I "had" this error "Skipping acquire of configured file 'main/binary-armhf/Packages'...."

A post from ryecoaaron 30.11.25 helped me (again) a lot...

dpkg allows additional architectures. With the rpi, you can likely remove the second architecture.

dpkg --print-foreign-architectures

armhf

Check to see if you have any armhf packages installed

dpkg -l | grep armhf

I had none. So I disabled armhf with:

sudo dpkg --remove-architecture armhf

done

I JUST setup an RPi 4 (4GB variant) with OMV 7 a couple of days ago and it seemed like the perfect candidate to upgrade to 8 since my other hosts are more mission critical. The RPi 4 is using the Wireguard, NUT, and Timeshift plugins along with the phased out FlashMemory.

Zero issues with the upgrade, took about 10 minutes. Very stable, as advertised. I would highly encourage anyone with RPi 4 to backup their system and proceed with the upgrade if their installation is fairly typical. In my case, I had made a few small changes in Linux but none of them created any problems.

I'll be upgrading the remaining hosts once I do a few backups. Remarkable turnaround given how recently Debian 13 came out.

EDIT: I upgraded the other two hosts with zero issues as well. Both are running OMV bare metal on AMD64. One of them has a lot of customization in Linux as well as a number of wacky Docker configurations and I was curious what might happen. But overall a pleasant and uneventful experience.

Upgrade from 7 to 8 took 14 mins start to finish. Rebooted and everything seems to running flawlessly. This a system I started with omv4 or 5 some years back. Bravo!

Upgraded yesterday my RPi4 OMV System --- absolutely no issues.

Thanx!