On EMC VMAX, certain(VDEV) volume is came from two StoragePool.

[cathay4t]

[fge@redhat-vm1 ~]$ sudo lsmenv vmax lsmcli lv|grep lsm_v_c__EGAA
6426c8603b7d913d839bc31bd4675059 | lsm_v_c__EGAA                                           | 60000970000194900393533030344145 | 537722880   | No       | SYMMETRIX-+-000194900393-+-C-+-0001         | SYMMETRIX-+-000194900393
6426c8603b7d913d839bc31bd4675059 | lsm_v_c__EGAA                                           | 60000970000194900393533030344145 | 537722880   | No       | SYMMETRIX-+-000194900393-+-S-+-DEFAULT_POOL | SYMMETRIX-+-000194900393

The SYMMETRIX-+-000194900393-+-S-+-DEFAULT_POOL is the pool for delta only.

The volume lsm_v_c__EGAA is an snapshot target which is from snapshot source pool and delta pool.

This also cause pool_id_of_cim_vol() fail for founding two pools.

Currently, we didn't have good way to handle this.