troubleshooting

  1. A

    Panic - Error 61 from traverse dataset destroyed

    I tried to delete an unused container volume from a degraded zfs pool last night and rebooted the server afterwards. On boot the server is hanging with the following error "Panic: Error 61 from traverse_dataset_destroyed" I can get back into the server if I either disable the ZFS pool or...
  2. F

    abnormal (17GB!) RAM usage on idle (ZFS ARC capped at 2GB)

    Hi everyone, i'm having issues with abnormally high RAM usage from boot. My server has 32GB of total memory and i'm autostarting 4 lxcs with about 2.5Gb of total ram use. ZFS arc is configured to 2GB as per: options zfs zfs_arc_max=2147483648 and is verified by issuing root@neuromancer:~#...
  3. R

    Mount and Claim Disks in GUI

    Hello, all. I'm a new Proxmox user and not the best at Linux. For my life, I can't figure out why I can't mount and claim the disks in the Proxmox GUI and Shell. I receive an input/output error when attempting to initialize the disks with GPT in the GUI. I tried to fdisk on the command line and...
  4. E

    [TUTORIAL] [Boot] Troubleshooting - verbose output

    Unfortunately PVE ships with quiet booting, the screen goes blank and then turns into login prompt. It does not use e.g. Plymouth [1] that would allow you to optionally see the boot messages. While trivial, there does not seem to be dedicated Wiki page on this basic troubleshooting tip. 1...
  5. M

    Node Drops from Cluster When PBS Kicks In

    Hello, I've seen this happen a few times now and it's always right when PBS goes to do backups on the node. The node keeps logging but drops from the cluster and shows offline. Here are the logs: And then for the rest of the night it just logs these timeouts: Not sure what logs to pull to...
  6. K

    Memory Error During Proxmox Installation - Need Help

    Hello, I'm trying to install Proxmox on my system, but I'm running into a memory error during the installation process. The error message doesn't provide much detail, and I'm not sure how to troubleshoot this. Has anyone experienced something similar? Any advice on what could be causing this...
  7. A

    IO delay troubleshooting

    I am running a small cluster (3 x AMD EPYC 7313P, 448GB RAM, 10 x PCI 4.0 Enterprise NVMe drives in a RAIDZ2-0 array with PVE 8.2.3) with all three nodes set up using 2 bonded 10Gbps fiber connections for migrations and admin. I am running into an issue where one of the three nodes is...
  8. N

    debian 12 netinst black screen

    Host details: Xeon-D 1541 16 GB DDR4 ECC Samsung 970 EVO 250 GB - boot disk 4x Samsung 870 EVO SATA SSD's - local storage for VM's - LVM RAID10 Proxmox 8.2.4 Yes, I'm aware that the SSD's aren't ideal, but it's what I had laying around. I'm trying to make a Debian 12 template, but any VM's...
  9. A

    System suddenly crashed, how to find out what happened

    I've been running proxmox on Intel Nuc (i7-10710U CPU) device for the past several years and it has always been rock solid. Today however it crashed - stopped responding to pings and I had to pull the power plug to restart it. root@pve:~# pveversion -v proxmox-ve: 8.2.0 (running kernel...
  10. A

    WEB GUI not loading in the browser

    Hi Proxmox Community, I have been trying to connect to https://192.168.1.100:8006, but after the server reboot the web GUI become unreachable. The funny thing is that the service itself seem to be running. # systemctl status pveproxy.service ● pveproxy.service - PVE API Proxy Server...
  11. H

    Unable to load the system with a u.2 drive

    Hi everyone, i'm having an issue that i don't know how to troubleshoute. I boucht an Intel optane u.2 disk, with the aim of passing it trough to Truenas. The u.2 drive works even if it is an ebay-used one (94% life left, so i will probably die before the drive). To test it, i've tried on a...
  12. O

    Throttled Performance After Set Amount of Time

    So I'm running into a bit of a strange issue that I can't seem to find an answer for anywhere. I currently have two Windows 10 VMs that I pass a Nvidia Tesla P100 through to using the vgpu unlock to create two 8GB profiles for each VM. The end goal is to have these two vms set up for cloud...
  13. S

    Help Needed: Networking Issue with Linux Bridges on Cluster, hard down.

    Hi All, I'm seeking assistance with a odd networking issue on version 8.2 (non-production repos). We are currently operating on kernel 6.5, despite the availability of kernel 8.6, due to specific compatibility and stability requirements. Our setup involves using Linux bridges for LAN and...
  14. J

    Promox + Ceph: VMs won't start + dreadful performance

    I have been searching far and wide for this. But I can't seem to find a solution. In one of our testing clusters we're experimenting with Ceph. But so far the journey has been bumpy at best. The actual trigger for this post is the fact that one of our VMs locked up and I can't seem to get it to...
  15. G

    Crash/Freeze when booting installer on server

    Just to preface, this is my first time installing Proxmox and using hypervisors in general. When I boot Proxmox from my USB, I select the first option and get to the "Welcome to Proxmox" installing screen. It loads for a little while, flickers all black, then freezes on the installer screen. I...
  16. Z

    Proxmox Fails Boot - No Error

    Good morning, all! This is my first post here, and I'm only making it because I truly couldnt figure this one out on my own. The other day I shut down my 3 nodes in my homelab server rack to unplug it and get all the dust behind and around it. Upon rebooting, my main node seems to have failed...
  17. T

    Ventura USB 3 not working

    Hi there, I'm having an odd problem. I have a lovely, working install of Ventura running on Proxmox 7.4. Both GPUs (RX580s) pass through successfully. The NVMe drive passes through to boot the OS. All in all, everything I try seems to be working great except for USB. Currently, I have the...
  18. F

    PVE 100%CPU on all kvm while vms are idle at 0-5% cpu

    Not sure what is happening, did a quick upgrade and restarted my proxmox nodes. After that i noticed that they randomly spiked to 100% Can see all kvm's are trying to get as much juice as possible for some reason, but when logging to the vms and seeing whats up, they do nothing and dont use any...
  19. G

    lxc/ containers?

    I have a follow up questions but to start lxc containers is basically just an extension of the host/ server. Right? im trying to understand this i dont know why i can not just install an application in a container but if i use a helper script i have less issues. main one im working on is...
  20. S

    Proxmox VE 7.4 not installing on Misinform NPB7

    We're trying to install Proxmox VE on the Misinform NPB7 mini PC and we get all the way to 99% on the installation and the box powers off when we see "Making system bootable". When we turn back on the box we have to restart the installation process. The systems info is: Intel® Core™ i7-13700H...

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!