Technical
qemu guest agent ram usage: what it actually reports inside the guest
QEMU Guest Agent RAM reporting is block-level, not usage-level. Here's what guest commands return and what you need to get real memory stats.
Technical
Lower ZFS ARC Max Size Proxmox: The modprobe.d Edit That Sticks
Lower ZFS ARC max size on Proxmox by setting zfs_arc_max in /etc/modprobe.d/zfs.conf, then update-initramfs and reboot. Verify with arc_summary.
Technical
Live Migrations Get Slower Over Time: It’s the Memory Dirty Rate, Not the Network
Live migrations get slower over time because the VM keeps dirtying memory faster than the network can send it. Here's how to measure it and fix it.
Technical
Proxmox Virtio GPU Windows 10 Slow: Why QXL Beats Virtio-GPU
Proxmox virtio GPU on Windows 10 is slow because there's no 2D acceleration. QXL has it. Here's the benchmark and the fix.
Technical
Proxmox Shared iSCSI Storage Multiple Nodes: LVM Cluster Setup That Works
Sharing iSCSI across Proxmox nodes needs LVM over iSCSI, not a plain filesystem. Here's the working config with TrueNAS, step by step.
Technical
Can’t enable secure boot on Windows VM: option greyed out because of BIOS, not the checkbox
Secure Boot is greyed out because your VM uses SeaBIOS. Switch the machine to q35 and firmware to OVMF, then convert Windows to UEFI boot. Here's the fix.
Technical
Proxmox Move All Disks to New Storage: The Safe Order and Commands
Moving every VM disk and container mount to new storage in Proxmox is just a few commands. Here's the safe order, the exact syntax, and how to verify it
Technical
Best Approach for Managing Proxmox VPS Templates with Cloud-Init
Best approach for managing Proxmox VPS templates with Cloud-Init: build once, update the template, then roll changes to existing VMs with a few commands.
Technical
rpc.mountd v4.2 client detached: it’s usually normal, here’s when to worry
rpc.mountd v4.2 client detached shows up on Proxmox NFS mounts all the time. It's usually just a reconnect. Here's how to tell if it's a real problem.
Technical
Tailscale and LXC Container: Running It in Proxmox Without the Headache
Tailscale in an LXC container on Proxmox works, but you need to get the TUN device and capabilities right.