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  1. net.bridge.bridge-nf-call-iptables and PVE Firewall

    In most cases where IPs are routed through the PVE host, the bridge-nf-call-* settings do not need to be enabled for PVE Firewall to work. However, we have recently switched to using a vlan-aware bridge on the host and configure the VLAN ID directly in Proxmox for each container/VM interface...
  2. Operational issues with ZFS and pvesr

    Ever since Proxmox 6 came out, we moved towards using Proxmox with ZFS across all physical servers. That is because with the new corosync, we don't need to have multicast traffic between those servers. We have successfully virtualized servers that were previously on bare metal and even started...
  3. Critical ZFS crash: VERIFY3(0 == dmu_object_claim_dnsize(zfsvfs->z_os... failed (0 == 28)

    We just experienced a nasty crash whenever kernel touched our ZFS pool. This occured after we replaced one faulty drive and resilvered but in fact had nothing to do with that. The crash bug occurs when ZFS is trying to reapply ZIL due to a previous power loss. The issues linked below document...
  4. [SOLVED] [OVS] veth shows NO-CARRIER on LXC start

    The problem is that when starting LXC container first time, creating LXC container OR after PVE host is rebooted (and therefore OVS configuration is reset, since PVE does not use persistent OVS DB), the virtual interface plugged into OVS port (vmbr0 here with VLAN tag 4001) does not work. Here...
  5. API: Setting features on lxc/VMID/config

    I am trying to define features to be e.g. keyctl=1 on LXC container's config, either while creating it or after creation. I can see this working from my web browser when I'm logged in as root@pam. However, when I call this from a new user created in the pve realm with all permissions assigned...
  6. Kernel panic: ip_set_hash_net

    We have a server that is typically running for 6 months between reboots to upgrade kernel. In other words, it's very stable and has been running for 4 years like that. Recently, we've had an unexpected hangup/crash-reboot. Upon that, a new kernel was loaded but the situation re-occured. Then a...
  7. Shrinking ZFS filesystem for LXC CT

    Howdy, I have given Proxmox on ZFS a test run recently (having used Proxmox for many users without ZFS). I was hoping that Proxmox on ZFS would allow LXC containers to have their disk allocation both extended and shrunk. However, the Proxmox GUI does not seem to allow that. Running the...
  8. Kernel panic (PVE 4.1 / 4.2.6-1-pve)

    Today we had one of the Proxmox hosts stop with the following message: The host was still running kernel 4.2.6-1-pve (package version: 4.2.6-26) because we did not reboot into the newer kernel that was installed already (4.2.6-28). I'm just posting this in hopes to verify if that is a known...
  9. [SOLVED] LXC containers can't access 169.254.169.254 bound to lo on host

    My use case involves having LXC containers connect to 169.254.169.254 (inside the guest). This IP (169.254.169.254) is added to "lo" interface on host (ip a add 169.254.169.254 dev lo). On Proxmox 3, this worked well. I had a server running on host, binding to 169.254.169.254:80 and guests were...
  10. Problem setting up cluster across two servers

    Hello, I have came across another problem, one of very few we had with Proxmox so far ;) We want to setup a cluster and we do it with the use of VPN. It's not exactly as in the ned's tutorial you link on the wiki because the VPN is exclusively for the communication between nodes and everything...
  11. Could not access KVM kernel module: No such file or directory

    Hello, I have just installed Promox 2 on a new dedicated server on top of a clean Debian Squeeze. The proper kernel is running (Linux hn2.dondaniello.com 2.6.32-6-pve #1 SMP Mon Dec 19 10:15:23 CET 2011 x86_64 GNU/Linux), all packages are installed. The problem is that VMs don't work, while...

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