1 files changed, 57 insertions, 0 deletions
diff --git a/qa/qa/specs/features/api/3_create/gitaly/praefect_dataloss_spec.rb b/qa/qa/specs/features/api/3_create/gitaly/praefect_dataloss_spec.rb
new file mode 100644
index 00000000000..6e2a34afb3e
--- /dev/null
+++ b/qa/qa/specs/features/api/3_create/gitaly/praefect_dataloss_spec.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Create' do
+    context 'Praefect dataloss commands', :orchestrated, :gitaly_cluster do
+      let(:praefect_manager) { Service::PraefectManager.new }
+
+      let(:project) do
+        Resource::Project.fabricate! do |project|
+          project.name = 'gitaly_cluster-dataloss-project'
+          project.initialize_with_readme = true
+        end
+      end
+
+      before do
+        praefect_manager.start_all_nodes
+      end
+
+      it 'confirms that changes are synced across all storages', testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/352691' do
+        expect { praefect_manager.praefect_dataloss_information(project.id) }
+        .to(eventually_include('All repositories are fully available on all assigned storages!')
+        .within(max_duration: 60))
+      end
+
+      it 'identifies how many changes are not in sync across storages', testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/352692' do
+        # Ensure our test repository is replicated and in a consistent state prior to test
+        praefect_manager.wait_for_project_synced_across_all_storages(project.id)
+
+        # testing for gitaly2 'out of sync'
+        praefect_manager.stop_secondary_node
+
+        number_of_changes = 3
+        1.upto(number_of_changes) do |i|
+          Resource::Repository::Commit.fabricate_via_api! do |commit|
+            commit.project = project
+            commit.branch = "newbranch-#{SecureRandom.hex(8)}"
+            commit.start_branch = project.default_branch
+            commit.commit_message = 'Add new file'
+            commit.add_files([
+              { file_path: "new_file-#{SecureRandom.hex(8)}.txt", content: 'new file' }
+            ])
+          end
+        end
+
+        # testing for gitaly3 'in sync' but marked unhealthy
+        praefect_manager.stop_tertiary_node
+
+        project_data_loss = praefect_manager.praefect_dataloss_information(project.id)
+        aggregate_failures "validate dataloss identified" do
+          expect(project_data_loss).to include('gitaly1, assigned host')
+          expect(project_data_loss).to include("gitaly2 is behind by #{number_of_changes} changes or less, assigned host, unhealthy")
+          expect(project_data_loss).to include('gitaly3, assigned host, unhealthy')
+        end
+      end
+    end
+  end
+end