This appears to be a four month old problem that has persisted through many updates for me, but the posts reporting this bug seems to have stop. Was the patch was implemented?
https://forum.proxmox.com/threads/f...in-directory-lib-modules-6-5-11-4-pve.137788/
https://forum.proxmox.com/threads/can’t-mount-storage-to-lxc-container.137848/
https://forum.proxmox.com/threads/pve-8-1-cant-add-disk-on-running-ct.139144/
Code:
Parameter verification failed. (400)
mp1: unable to hotplug mp1: failed to move 'mp1' into container hierarchy: Permission deniedhttps://forum.proxmox.com/threads/f...in-directory-lib-modules-6-5-11-4-pve.137788/
https://forum.proxmox.com/threads/can’t-mount-storage-to-lxc-container.137848/
https://forum.proxmox.com/threads/pve-8-1-cant-add-disk-on-running-ct.139144/