lvm extend issue

Hi, I have an LVM2 thin pool on my Proxmox system that contains multiple thin volumes. Occasionally, one of the volumes unexpectedly grows very large, causing the thin pool to run out of space. This usually isn't a big problem, I just delete some data, maybe reboot the system, and I’ve never...

I have 3 Proxmox nodes in a cluster, and I need to configure the 3PAR to the nodes I'm using multipath now, but the LUNs are showing 4 times for all the nodes. Sometimes the lun is showing in one node but not in other nodes. How can I sync the LUNs automatically? Is there any way to solve this...