storage

Technical

Proxmox add USB stick image as ISO: import a ready-made .img with qm importdisk

Proxmox add USB stick image as ISO? Skip the ISO conversion. Upload the .img to local storage and use qm importdisk to attach it as a VM disk.

NguyenSeptember 25, 20262 min read

Technical

Import Disk VMDK-qcow2 Unsupported image type ‘onolithicFlat: Fix It in Proxmox

Import Disk VMDK-qcow2 Unsupported image type 'onolithicFlat' error means your VMDK is a flat preallocated image.

NguyenSeptember 25, 20262 min read

Technical

Enterprise iSCSI support in PVE: multipath and CHAP with a TrueNAS target

Enterprise iSCSI support in PVE works fine with a TrueNAS target. Set up multipath for failover and CHAP for auth, but expect some quirks with LUN mapping.

NguyenSeptember 23, 20262 min read

Technical

proxmox backup server host restore: rebuilding the PBS host and reattaching an existing datastore

When the Proxmox Backup Server host itself dies, the datastore usually survives. Here's how to rebuild the host, reattach the datastore, and get backups running

NguyenSeptember 21, 20266 min read

Technical

NVMe Passthrough Performance on Proxmox: Benchmarks and Trade-offs

NVMe passthrough performance on Proxmox: I benchmarked virtio-blk vs PCIe passthrough. Passthrough wins on latency but loses flexibility.

NguyenSeptember 20, 20262 min read

Technical

veeam hardened repository: what it buys you that PBS prune settings do not

PBS prune and GC protect against disk-full, not against someone with root on the backup host. A Veeam hardened repository is a different threat model.

NguyenSeptember 17, 20266 min read

Technical

ZFS over iSCSI TrueNAS Scale Proxmox: targetcli setup that actually works

ZFS over iSCSI from Proxmox to TrueNAS SCALE fails because SCALE uses LIO, not istgt. Here's the targetcli config and Proxmox storage plugin settings that

NguyenSeptember 16, 20262 min read

Technical

Shrink LVM-Thin Proxmox: Safe Methods and Dead Ends

Shrinking an LVM-thin pool on Proxmox isn't directly possible. Here's the safe workaround: create a new smaller pool and move your VMs over.

NguyenSeptember 14, 20262 min read

Technical

llm observability with a gateway in front of every model call

A gateway in front of your LLM calls gives you per-call cost attribution, one place to swap models, and retries. Here's what the logs actually told me.

NguyenSeptember 13, 20265 min read

Technical

No such logical volume pve/data (500) after multipath -a: fix Proxmox local-lvm

Running multipath -a breaks Proxmox local-lvm with 'no such logical volume pve/data (500)'. Here's why and how to recover the thin pool.

NguyenSeptember 12, 20261 min read