this post was submitted on 17 Dec 2025
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moved from truenas core to scale a month or two ago, and it's been a struggle. anyone else having issues running a truenas scale VM under proxmox? (piefed.zeromedia.vip)
submitted 1 week ago* (last edited 1 week ago) by fleem@piefed.zeromedia.vip to c/selfhosted@lemmy.world
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UPDATE EDIT:
Man it is crazy to watch the dashboard and console at the time. Even with no HDD's spinning, and as much RAM as I can give the Scale VM, services just slowly takes over the RAM, until the console shows kernel panic.

core was solid for so long with everything i threw at it.

it runs out of memory after services soaks up all the RAM, ZFS cache is choked down to 3gb out of 16.

  • xeon E3 1265LV2
  • Asus p8z77-v-deluxe
  • 32GB DDR3
  • hba passed through to truenas running a mirror pool

VM for truenas is running on the local proxmox SSD.

  • proxmox 9.1.1
  • TrueNAS scale 25.10.0.1 but i tried a 24 version also

once the install starts crashing, the VM will still crash after booting up without the HBA card

I've seen a few posts with other people having the out of memory issues (OOM) but almost every reply says it will be fixed in the next update, which is older than what we've got now.

it did run okay enough JUST long enough to make the mistake of updating the ZFS flags, so now i can't roll back to core.

does scale have this issue because it's virtualized? would it run better on bare metal?

anyone tried xigmaNAS? freeBSD based again at least.

Unraid looks okay, but paywall?

open media vault?

any advice or discussion is appreciated!

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[–] rockyracoon@lemmy.world 4 points 1 week ago (1 children)

I've had a good experience with TrueNAS scale on bare metal and proxmox in a VM. I don't have a lot of heavy weight stuff on proxmox though, mainly LXC containers and a few VMs. I also have a VM in TrueNAS for jellyfin that I pass a GPU into. It's been running that way for several years without issue.

[–] fleem@piefed.zeromedia.vip 1 points 1 week ago

truenas core was my first bare metal install! ran awesomely for about a year until i realized i wanted to do more than the freebsd jails were letting me.

and the core install on a proxmox VM was seemingly bulletproof! I kick myself for wanting a syncthing setup without a bunch of mounts and shares. I was elated at the idea that truenas was finally just another debian machine, and my buddy scared me by letting me know that core was on maintenance mode. so i pulled the trigger.

i am debating wiping proxmox and letting this machine be scale on bare metal, but i would have to figure out what to do with immich and jellyfin in the meantime.