proxmox - CapturedByNguyen

Technical

How to Download Files from Proxmox Node: LXC Rootfs, VM Disks, and Backups

How to download files from Proxmox node depends on what you mean: a file inside an LXC, a VM disk image, or a backup.

NguyenOctober 27, 20262 min read

Technical

Your qcow2 file is bigger than the configured disk because of preallocation, snapshots, or metadata.

NguyenOctober 27, 20262 min read

Technical

Backup LXC to NAS NFS share fails with permission denied? The fix is root squash and NFS version. Here's the TrueNAS and Proxmox config that works.

NguyenOctober 26, 20262 min read

Technical

No built-in export button, but pvesh gives you the summary in JSON. Pipe it through jq to get a clean CSV for any host or the whole datacenter.

NguyenOctober 26, 20262 min read

Technical

That Proxmox warning means one of three things: no agent package in the guest, no virtio-serial channel, or the Agent option is off.

NguyenOctober 25, 20261 min read

Technical

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.

NguyenOctober 25, 20262 min read

Technical

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.

NguyenOctober 24, 20261 min read

Technical

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.

NguyenOctober 24, 20262 min read

Technical

Proxmox virtio GPU on Windows 10 is slow because there's no 2D acceleration. QXL has it. Here's the benchmark and the fix.

NguyenOctober 23, 20261 min read

Technical

Sharing iSCSI across Proxmox nodes needs LVM over iSCSI, not a plain filesystem. Here's the working config with TrueNAS, step by step.

NguyenOctober 23, 20262 min read