diff --git a/releasenotes/notes/deprecate-compute-feature-enabled-block-migrate-cinder-iscsi-fcda802d774dfeec.yaml b/releasenotes/notes/deprecate-compute-feature-enabled-block-migrate-cinder-iscsi-fcda802d774dfeec.yaml
new file mode 100644
index 0000000..6bbb381
--- /dev/null
+++ b/releasenotes/notes/deprecate-compute-feature-enabled-block-migrate-cinder-iscsi-fcda802d774dfeec.yaml
@@ -0,0 +1,8 @@
+---
+deprecations:
+  - |
+    The ``[compute-feature-enabled]/block_migrate_cinder_iscsi`` is deprecated
+    ahead of removal in a future release. Once removed the
+    ``[compute-feature-enabled]/block_migration_for_live_migration``
+    configurable will then be used to determine when to run block migration
+    based tests during live migration.
diff --git a/tempest/config.py b/tempest/config.py
index 32cebc5..cb6cb52 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -475,7 +475,14 @@
                 default=False,
                 help="Does the test environment support block migration with "
                 "Cinder iSCSI volumes. Note: libvirt >= 1.2.17 is required "
-                "to support this if using the libvirt compute driver."),
+                "to support this if using the libvirt compute driver.",
+                deprecated_for_removal=True,
+                deprecated_reason='This option duplicates the more generic '
+                                  '[compute-feature-enabled]/block_migration '
+                                  '_for_live_migration now that '
+                                  'MIN_LIBVIRT_VERSION is >= 1.2.17 on all '
+                                  'branches from stable/rocky and will be '
+                                  'removed in a future release.'),
     cfg.BoolOpt('vnc_console',
                 default=False,
                 help='Enable VNC console. This configuration value should '