dmsetup shows guest logical volumes
I installed Rocky (keystone, glance, nova, cinder, horizon, heat, neutron) on HP Gen9 Blades, with EMC VNX5100 as storage. Since each blade came with internal disks, I installed cinder on all blades, and configured cinder with lvm driver. On one node, I configured cinder with VNX driver too, to access the EMC storage. I installed OpenStack on CentOS 7, on the internal disk, on simple disk partitions. I created a partition on the local disk for the cinder lvm volume group (on all nodes).
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
cinder-volumes-pool cinder-volumes twi-aotz-- <1.32t 0.00 0.42
I filtered everything from LVM, except for the partition I allocated for cinder.
# fdisk -l /dev/sda | grep sda4
/dev/sda4 534775808 3516262831 1490743512 83 Linux
# grep sda4 /etc/lvm/lvm.conf
filter = [ "a|^/dev/sda4$|", "r|.*|" ]
Nevertheless, after creating a few servers, I can see the guest machine's logical volumes, in the dmsetup ls list (vgbackup-lvol1) on the host.
# dmsetup ls --tree
cinder--volumes-cinder--volumes--pool (253:5)
└─cinder--volumes-cinder--volumes--pool-tpool (253:4)
├─cinder--volumes-cinder--volumes--pool_tdata (253:3)
│ └─ (8:4)
└─cinder--volumes-cinder--volumes--pool_tmeta (253:2)
└─ (8:4)
vgbackup-lvol1 (253:9)
└─mpathjm (253:8)
├─ (8:224)
└─ (8:208)
Is this OK? Did I do something wrong? Could it be the reason I have a hard time deleting my heat stacks? Sometimes even the stack creation hangs and I have to clean up everything to start over.