RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Seems to work for me now.

[root@bp-01 ~]# lvs vg
  LV   VG   Attr       LSize  Pool        Origin     Data%  Meta%  Move Log Cpy%Sync Convert
  lv   vg   Cwi-a-C--- 50.00g [cachepool] [lv_corig] 0.04   2.83            0.00

[root@bp-01 ~]# lvchange -p rw vg/lv
  Logical volume "lv" is already writable
[root@bp-01 ~]# lvchange -p r vg/lv
  Logical volume "lv" changed.
[root@bp-01 ~]# lvchange -p rw vg/lv
  Logical volume "lv" changed.
[root@bp-01 ~]# lvchange -p r vg/lv
  Logical volume "lv" changed.

[root@bp-01 ~]# vgremove vg
Do you really want to remove volume group "vg" containing 1 logical volumes? [y/n]: y
Do you really want to remove active logical volume lv? [y/n]: y
  Logical volume "cachepool" successfully removed
  Logical volume "lv" successfully removed
  Volume group "vg" successfully removed

The version I tested was lvm2-2.02.115-3.el7.x86_64 - just one bump beyond what you tested.

(In reply to Jonathan Earl Brassow from comment #2)
> The version I tested was lvm2-2.02.115-3.el7.x86_64 - just one bump beyond
> what you tested.

...already in RHEL 7.1. Closing as CURRENTRELEASE.