This LV seems mounted on single mountpoint.

The lsof is attached to the mail.

[root@panoramix ~]# dmsetup ls --tree
vg_obm-var_lib_obm_documents (253:4)
  └─ (8:64)
vg_obm-var_spool_postfix_cluster (253:5)
  └─ (8:64)
vg_backups_CCtools-lv_backups_CCtools (253:11)
  └─ (8:4)
vg_obm-var_solr (253:6)
  └─ (8:64)
vg_pgsql-var_lib_pgsql (253:10)
  ├─ (8:33)
  └─ (8:17)
vg_obm-var_lib_lemonldapng (253:9)
  └─ (8:64)
vg_obm-sfex (253:7)
  └─ (8:64)
vg_obm-var_lib_imap (253:2)
  └─ (8:64)
vg_obm-var_spool_imap (253:3)
  └─ (8:64)
vg_obm-var_lib_obm_sync (253:8)
  └─ (8:64)
vg_system-lv_var_log (253:12)
  └─ (8:2)
vg_system-lv_swap (253:1)
  └─ (8:2)
vg_system-lv_root (253:0)
  └─ (8:2)
vg_system-var_lib_cassandra (253:13)
  ├─ (8:18)
  └─ (8:5)

Thanks for your help

On 09/07/2019 17:15, Zdenek Kabelac wrote:
> dmsetup ls --tree