you renamed the storage id (deleted it ?)
if those images do not exist anymore, you can remove the harddisks, then you can remove the vm
if they do exist on another storage, you have to edit the vm config files so that the disks reference the new storage id
go into the hardware tab of your vms, select the disk image and click 'remove'
if the disk really does not exist anymore you can just delete the config file under /etc/pve/nodes/<nodename>/lxc/<ctid>.conf
would be better, yesI have another question releated to LVM and shared storage iSCSI, i need to open a new thread?