r/Proxmox

Hi,

we still have a couple of M630 blades from an earlier virtualization, which I thought about using for a test infrastructure for a potential/probable future Proxmox migration (still have ~2 years of VMware service contract left, but with the expected price increase, no way in h*ll we'll pay for that).
Anyway, seeing that e.g. VMWare doesn't support the VRTX platform beyond 7.03 (due to Dell not providing SPERC drivers for ESXi8), I was wondering if anybody has information on whether current Proxmox/Linux supports that integrated SPERC controller? I only found some older posts where it sounded like it was supported, though I couldn't find anything more current than 3-5 years ago ...

Edit: we do not have the vrtx chassis, just the original E1000 with external EMC storage, which are "too big" for just a test environment... I was thinking about either swapping our old parts for it or buying a vrtx....

Edit2: According to Dell, different Linux version are officially supported: https://www.dell.com/support/home/de-de/drivers/supportedos/poweredge-vrtx e.g. RHEL, SLES & Ubuntu 12 ...

I'm setting up backups right now and realised that, if you gave PVE the authorisation to prune VMs it would allow an attacker to simply set it up to "keep nothing" and all your backups would be nuked during the next prune job.

Am I correct or did i miss something ?

Currently i run 2 proxmox machines

1st optiplex 7050ssf i7 7700 32gb ram

- home assistant os vm

- jelly fin

- palworld dedicated server vm

- unbound and pihole

2nd is optiplex 9020 32gb ram 4790

Frigate vm using a 1080ti 8 cameras

1080ti is also running a small 3gb llm same vm

Using this machine to store media and play it via jelly fin

Shouod I upgrade to 1 machine that can do it all or get a backup machine first? Not sure where to go from here.

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Specs: i5 12500, 16gb ram, 256gb nvme

So I was really struggling if I wanted to do Debian/Ubuntu or proxmox as main is but with backups and future upgrades and probably moving to it later I've heavily leaned into proxmox now

But now looking into it and learning about LXC vs VM I'm confused which to use, and still unsure how isolated/secure LXC is to a VM

My first project is going to be an online Minecraft server for me and some friends through crafty controller, followed by adguard/pihole, immich and then probably a few other things later down the line like Jellyfin etc.

When looking into Ubuntu it was clear to just use containers for everything, but now for proxmox would I want to use an LXC for each or just a docker VM with all those things in it

Considering my Minecraft server is online I would like it to be completely isolated from other things, and keep everything separated

So, I am a DevOps Intern currently working on PVE servers where we have hosted many lxc & vm inside of it. So, I am breaking down entire setup I have, Problem I am facing and things I have tried and Temporary fix for this but couldn't find the permanent fix.

Setup:

Proxmox host + a few LXCs/VMs. Host pings out fine. All guests show "running," logs are clean.

Problem:

Guests can't reach the internet at all even after pinging 8.8.8.8 from inside any LXC/VM just fails. Because of this, I also can't hit my app hosted container's web UI (192.168.xx.xxx:port) from my LAN and browser just times out or even say server unreachable, even though the container and vm itself looks healthy.

Already ruled out: container crashes, bad logs, host-level connectivity. All LXC & VM hosted containers are working fine and their logs are good.

Not sure where to look next:

• vmbr0 misconfig?
• PVE firewall or host iptables/nftables blocking forwarded traffic?
• net.ipv4.ip_forward disabled (if using NAT)?
• Something in guest network config itself

I tried looking these iptables, vmbr0 etc and they are all looking fine and I am a basic networking guy I don't have advance concepts of these things but still tried to configure it but thought I shouldn't mess with company's pre-configured servers.

Question:

Since host→internet works but guest→internet and LAN→guest both fail, is this most likely one root cause (bridge/firewall) or two separate issues? What's the fastest way to isolate it — happy to post ip a, ip route, iptables -L -n -v from host/guest if useful.

I know the temporary fix which is obvious "reboot/shutdown -r now" and I am still using this thing. But I don't know the permanent fix. If people from this reddit can help this intern will be very highly appreciative.

I`m trying to setup SDN by adding a Zone (VLAN) to bridge vmbr0 and adding VNets (with TAG 11O)

The node IP keeps working (ip in vlan 110, by settings native vlan to 110 on the switchport) but as soon is i connect an VM to VNET 110 it stops working

How can i use SDN and management ip on the same interface (since the Optiplex mini only has one interface)

Hello,

I just noticed that my OS disk of Proxmox is in a degraded test (ZFS filesystem).

rpool disk is degraded

I do have some spare SSD SATA 256Gb but the OS run as a stripe (1 disk only) and I'm not sure how to migrate it. I'm used to clonezilla but never used it on ZFS and I do not want errors on my PVE.

What's the best method to migrate rpool?

I run about nine containers on an old i5 mini PC, Proxmox underneath, and it's been fine for a couple years. I added Immich a few months back and now the whole thing crawls every time it runs a face detection pass, with Nextcloud and Home Assistant going sluggish at the same time. I've capped CPU shares in the compose file, which helped a bit but nowhere near enough.

What ended up being the sign that one box wasn't enough anymore?

I have a think centre, I have proxmox on it. I have a VM which runs Debian which I want to pass my GPU into. This Debian VM is acting as a K8S node which I am trying to pass the GPU into for a pod.

Specifically, I'm trying to set up transcoding of video content with jellyfin.

I have passed the GPU into the VM with hardware and it seems to be found no problem. It seems that I am having issues with it that I notice the transcoding will return errors I have been trying to work through.

While it seems to be found, it seems like it might be a permissions issue. I checked /dev/dri and made the GPU chmod to 666.

I have been working on this for like 5 days, and was not sure if there is anything specific I have been looking with respect to proxmox itself and permissions.

I can provide additional details, but I was not sure who else had accomplished something like this and if there are how-to's somewhere.

Small VM/LXCs backup fine. I have 3 large (1.5TB+) containers that fail to back up 100% of the time after roughly 5-30 minutes. PBS is running on separate hardware w/ a dedicated NIC for backup traffic. TCP segmentation on all NICs involved in backup is off. Backup datastore is a ZFS RAIDz array w/ three 6TB HDDs. Previously was a ZFS Mirror on two 14TB HDDs w/ same issues.

This has been a thorn in my side for weeks now. I'd appreciate any help.

PVE

INFO: processed 132.153 GiB in 19m, uploaded 132.111 GiB
INFO: HTTP/2.0 connection failed
INFO: unclosed encoder dropped
INFO: closed encoder dropped with state
INFO: unfinished encoder state dropped
INFO: finished encoder state with errors
INFO: catalog upload error - channel closed    
INFO: Error: error:0A0003FC:SSL routines:ssl3_read_bytes:ssl/tls alert bad record mac:../ssl/record/rec_layer_s3.c:918:SSL alert number 20
INFO: cleanup temporary 'vzdump' snapshot
  Logical volume "snap_vm-102-disk-0_vzdump" successfully removed.
ERROR: Backup of VM 102 failed - command 'lxc-usernsexec -m u:0:100000:65536 -m g:0:100000:65536 -- /usr/bin/proxmox-backup-client backup '--crypt-mode=encrypt' '--keyfd=15' pct.conf:/var/tmp/vzdumptmp3799871_102/etc/vzdump/pct.conf root.pxar:/mnt/vzsnap0 --include-dev /mnt/vzsnap0/./ --include-dev /mnt/vzsnap0/./media --skip-lost-and-found '--exclude=/tmp/?*' '--exclude=/var/tmp/?*' '--exclude=/var/run/?*.pid' --backup-type ct --backup-id 102 --backup-time 1787169166 --entries-max 1048576 --repository root@pam@192.168.5.3:bu_store' failed: exit code 255
INFO: Failed at 2026-08-19 15:12:07
INFO: Backup job finished with errors
INFO: notified via target `gmail`
TASK ERROR: job errors

PBS

2026-08-19T15:12:06-05:00: POST /dynamic_chunk
2026-08-19T15:12:06-05:00: upload_chunk done: 6249439 bytes, 09fd92d51ca90f8196dd33204bea6f14e6c07f7b3d8c714df018ffa259076433
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: backup failed: connection error
2026-08-19T15:12:06-05:00: removing failed backup
2026-08-19T15:12:06-05:00: removing backup snapshot "/mnt/datastore/bu_store/ct/102/2026-08-19T19:52:46Z"
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: POST /dynamic_chunk: 400 Bad Request: error reading a body from connection
2026-08-19T15:12:06-05:00: TASK ERROR: connection error: error:0A000119:SSL routines:tls_get_more_records:decryption failed or bad record mac:../ssl/record/methods/tls_common.c:873:, error:0A000139:SSL routines::record layer failure:../ssl/record/rec_layer_s3.c:698:

TL;DR: Proxmox host crashes (eventually) when any spinning disk(s) connected. Leaving just boot NVMe SSD does not cause problem and server is stable for months. Have dug though logs - no hints.

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Update to add: Reused SATA cables, but can try swapping them. PSU is a brand new Thermaltake 600W 80+ Gold. Link below. The crash is a kernel panic (when I'm able to catch it, normally don't have display connected, so get no output). The SATA drives are connected directly to the motherboard (second link below). I know these are "consumer parts", but this same exact build that has run for years at work. No docker, but yes to Podman...

https://a.co/d/01vNulMr

https://a.co/d/02aGaZrW

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Update 2: I do also have XMPP enabled for RAM. I'm wondering if I should disable that and see if that makes a difference as well. I've akso played with C-states with no luck.

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Hey all I have run Proxmox in my home lab for five years now. I also run multiple Proxmox servers at work. It has been my favorite hypervisor platform since using it and I suggest it to anybody who asks for a recommendation.

However, I have been having a lot of issues with my home deployment, and they seem to be related to spinning disks. My home deployment was one server with much older hardware. After it had various issues, I built a brand new machine with brand new parts, minus the ZFS drives. I installed Proxmox Fresh on this new machine. The only thing that carried over from the old machine was my ZFS array on three spinning disks (SATA).

My old server started to spontaneously crash, and I could not track down why through logs. After building the new machine, everything was running as it should have for a couple of months. One day, the same exact crashes started happening on the new host. Eventually, I found that the ZFS kernel module was throwing some kind of dump or error.

After seeing that `smartctl` returned some errors with 2 disks in the array, I bought three brand new hard drives, making the entire server brand new with no reused parts whatsoever. I replaced each drive in the array one by one and let it resilver. The issues still persisted. `zpool scrub` and `zpool status` showed no data integrity errors, or issues with the brand-new disks.

Eventually, I backed everything up from the array, wiped the disks clean, and created a brand new ZFS array. I restored everything from a backup and all was running well for a couple of weeks. However, as you can probably surmise, it did not last.

Throughout this all, the only solution to get the server to stay running for an extended period of time was to pull at least two of the drives. The server would then run with no issues for months. While that's not a workable long-term solution, it's been enough to get me through and run the essential services.

Finally, I just decided to do away with ZFS entirely. I decided that I would make each disk an LVM_Thin pool. I grabbed a spare 1 terabyte drive, moved some other essentials onto there, and started to format the disks. After that, the server still crashed. Thinking that this might be an issue with the drives themselves, I pulled the three large drives, leaving the boot SSD and the 1TB hard drive. It *still* crashes.

The only slightly weird thing about my setup is that I pass through a GTX 1050 Ti to a virtual machine. I have not pulled that from my setup, but I struggle to imagine that it worked for years and has started failing only when a hard drive is connected.

I have tried troubleshooting with Claude, digging through the logs myself, trying various hardware configurations, looking for any error I can find, but unfortunately I haven't been able to figure out what's actually causing this. I'm sorry for the long winded message, but I am close to giving up on Proxmox, which I really don't want to do. I'm really hoping that somebody might have some sort of insight into where else I should look for errors or what I might be doing wrong. Thank you!

Hi all, I am currently in the fun project of cleaning up and sorting out my homelab. I am running proxmox and it has a lot of configuration. E.g. bridges, DDNS, certs, machines, nfs mounts via fstab, and some custom scripts for NFS mounts after OMV VM has started, potentially something else. All that is just handcrafted and in case of host failure I will need to start from scratch.
One good thing i took care of VMs/LXCs backups to a remote host.

The question is - How do you keep that all recoverable , do you use git or document your changes? what would be a good strategy to comeback to operations as soon as possible?

I've just installed Proxmox on an old laptop I had lying around. I'm planning on playing around with it and slowly scaling it into the core of a home lab/automation hub. The first thing I want to do is install Jellyfin so I can stop hosting it from my personal notebook.

I've got my media library offsite, and I rsync the changes down locally. At the moment I've only got Proxmox hooked up to my local hard drive. I'd like to set up the Jellyfin VM so that it can read that data from a shared location, and once I get a proper NAS setup it's easy to migrate my data over there.

What's the best way of doing that?

What setups are you using for small businesses? 20-30 VMs. 20TB.

Is shared storage the best way? SAN?

Wondering if replication is acceptable? 5 mins max of data loss?

Hi guys,

I am using hp elitedesk 800 g3 mini with 7700t cpu for proxmox host. Proxmox version is 9.2.11. Weirdly my machine shows 800 Mbps speed on iperf3. But same machine with windows 10 shows 970 Mbps with same cable and setup.

Nic is Intel I219LM Gigabit Ethernet. Tried Debian 13 and Arch as well but same issue.

Also I noticed high retry count on proxmox vms.

What can be the reason?

Thank you

I am new to Proxmox, I already have Beelink MiniPC Intel N100, 16GB setup with Proxmox, recently I bought a used ThinkCenter M710Q, 16B RAM, i5-6500T to play around with a 2 node cluster. My main aim is to learn and play around, make and break, and try new features like Backup, Datacenter Manager etc.

I have the budget to buy another MiniPC or a used ThinkCenter or Dell PC. I know when I have 3 nodes I have better HA, qorum. What other features will I miss when I have only 2 node Cluster? Do you recommend I have 3 node as general setup?

I tried mounting a nfs share from my ugreen nas as the location for immich media.

It worked for some time, but I got permission issues where it could not read the folders from the share.

Points I'm having questions:

- which squash option should I use in the nas?

- would using smb fix these issues?

- do i need any group/uid hacks on the lxc side?

Appreciate your help!

Hi there,

I plan to host my own website, using Proxmox, to cut costs but to also learn more about hosting / labbing etc...

The main thing I want to make sure of is that I'm fully secure and not exposing my server to the internet.

I have a Virgin Media home ISP router and a Dell R210 II running Proxmox.

I'm planning to run OPNsense as a VM in Proxmox behind my Virgin router (double NAT, since the Hub still needs to serve my home devices), with a Debian VM running Docker in an isolated DMZ for the website container, exposed via Cloudflare Tunnel rather than port forwarding.

Does this sound like a solid plan? Are there any risks that come with this? Is there anything you would do differently?

*** UPDATE *** Thanks to everyone for your responses. I think it would be safer if I considered another option for now. I think I might upload the HTML code to GitHub and then use CloudFlare.

Hi, i'm trying with Win11_25H2_Italian_x64_v2.iso , using Virtio HDD , i install the drivers at setup , the drive appears, i proceed , it reboots , and then after a bit of spinning , i get a strange bluescreen where it says that with update the problem may solve but initialization of the PC failed.

https://preview.redd.it/j80aylu5ybkh1.png?width=1271&format=png&auto=webp&s=574c612380be171123e6f2127740f887e0d37557

It seems to be some crap about being online etc imho, but this is entirely new to me, i reinstalled 2 times already same result.

Hi, anyone running OPNsense in a Proxmox VM what are your speeds like? Have you passed the NICs through? Did you follow any tuning guides?