Technical
Proxmox ZFS storage summary: map Size, Used, and Avail to zpool list and zfs list
Proxmox ZFS storage summary shows Size, Used, and Avail from zpool list, but the per-dataset numbers come from zfs list. Here's the mapping.
Technical
Proxmox VM CPU Usage Higher Than in Guest: Which Number Is Real
Proxmox VM CPU usage higher than in guest? The GUI shows host-relative CPU, while the guest reports per-vCPU. Here's the math to convert between them.
Technical
SSH doesn’t work as expected in LXC: fix it with a systematic checklist
SSH doesn't work as expected in LXC? Check the container's network config, sshd service, and host firewall. Here's the end-to-end fix.
Technical
Proxmox API create VM cluster not per node: why /nodes/{node}/qemu is the only way
Proxmox API create VM cluster not per node — the endpoint is /nodes/{node}/qemu because VMs are node-bound.
Technical
How to Power Off Proxmox Node Safely
How to power off a Proxmox node without killing VMs or breaking quorum. Check HA and cluster state, then use the GUI or shutdown command.
Technical
Proxmox snippets feature: enable storage, upload files, wire them into cloud-init and hookscripts
Proxmox snippets are small text files for cloud-init and hookscripts. Here's how to enable snippet storage, upload files, and reference them in your VMs.
Technical
Proxmox Unresponsive After 1 or 2 Days: Check the Kernel Ring Buffer First
Proxmox unresponsive after 1 or 2 days? Start with dmesg and hung task traces, then check ZFS ARC, C-states, and RAM. Here's the order I'd follow.
Technical
Proxmox VM Summary Memory Usage Higher Than Guest: Which Number Is Real
The Proxmox VM summary memory usage is higher than guest because it counts the QEMU process RSS, not just what the guest sees. Here's how to read the gap.
Technical
LVM thin in the same VG as virtual machines: yes, you can mix them
You can mix LVM-thin and regular LVM volumes in the same Proxmox volume group. Here's the storage.cfg setup and the thin pool exhaustion caveat.
Technical
Proxmox exclude disk from snapshot: move it to a storage that doesn’t support snapshots
Proxmox has no per-disk snapshot toggle. To exclude a disk from a VM snapshot, move it to a storage that doesn't support snapshots, like a directory or NFS