After the reinstallation of my multimedia server i created a too small vdisk, no problemo i use LVM, simply resize the disk in proxmox, recreate your PV partition and pvresize, that’s it.
Surprise motha*****, you can’t resize your LVM PV partition if you have a GPT partition table because GPT put his backup structure at the end of the disk.
As you can see the disk is 3774873600 sectors but only (2097151966 - 34) is usable.
We can fix this by entering in the expert mode with “x” and “e” (relocate backup data structures to the end of the disk)
Now we have all our sector usable.
After that follow the basic steps to resize your LVM PV.