ZFS Primer
Sometimes your ZFS drives on your disk runs away with you. Then you quickly need commands to see what ZFS disk is the busiest. Try
Disk Management
Adventures in SDN (Software Defined Networking) in Proxmox
Creating VXLANs: Example: https://pve.proxmox.com/pve-docs/chapter-pvesdn.html#pvesdn_setup_example_vlan VXLan Setup Example Create a zone: ID: vxlan1 Peers Address List: 192.168.0.1,192.168.0.2,192.168.0.3 Create a VNet named vxvnet1 using the VXLAN zone myvxlanzone created previously. ID:
NVMe/SSD Cheat Sheet
NVMe and SSD comes in different forms. SLC, MLC, TLC, and QLC References https://www.xda-developers.com/ssd-wear-might-be-the-most-overhyped-hardware-problem/ https://www.xda-developers.com/specs-to-care-about-when-buying-ssd/
Proxmox error “Cannot remove image, a guest with VMID ‘XXX’ exists! You can delete the image from the guest’s hardware pane”
At times, after many live migrations between different disk, and whilst using TrueNAS Scale, you’ll encounter the following error: Cannot remove image, a guest with
How to reduce the size of an LVM disk on a Debian system on Proxmox and an underlying EXT4 disk
Background I’ve never reduced the size of a disk. Everywhere you read up about it there are huge disclaimers that it can break your system,
Oversubscribing LVM-Thin on Proxmox – warnings
Background LVM-Thin is great because you don’t use all the disk space and can share between hosts. However, it’s dangerous to oversubscribe if one of
Proxmox – Unable to wipe disk – disk/partition ‘/dev/sdX’ has a holder (500) – on mirrored disks
Background When deleting a disk from the Proxmox UI, you are presented with several options. Depending on where you started, you might get this problem:
In Proxmox, what is the difference between Virtio SCSI and Virtio SCSI Single?
This is easy to google, but important to note the maximum performant is Virtio SCSI Single and io_thread. See here: https://forum.proxmox.com/threads/default-setting-of-scsi-controller-is-now-virtio-scsi-single.121491/ https://kb.blockbridge.com/technote/proxmox-aio-vs-iouring/ and especially here:
Interesting Smart Messages
List of Useful Commands smartctl -i /dev/sda smartctl -H /dev/sda smartctl –all /dev/sda smartctl –all /dev/sda | grep -i power_on Proxmox Observation I recently observed
TrueNAS Scale on Proxmox VM and iSCSI with directly connected driver error
Here is an easily reproducible error that happens on Proxmox (perhaps also TrueNAS Core iSCSI NAS) that doesn’t seem solvable. The errors do not stop