diff --git a/pkg/cmd/roachtest/roachtestutil/BUILD.bazel b/pkg/cmd/roachtest/roachtestutil/BUILD.bazel
index ccef4d8a442f..94fb0eb5a767 100644
--- a/pkg/cmd/roachtest/roachtestutil/BUILD.bazel
+++ b/pkg/cmd/roachtest/roachtestutil/BUILD.bazel
@@ -7,6 +7,7 @@ go_library(
         "disk_usage.go",
         "health_checker.go",
         "jaeger.go",
+        "utils.go",
         "validation_check.go",
     ],
     importpath = "github.com/cockroachdb/cockroach/pkg/cmd/roachtest/roachtestutil",
diff --git a/pkg/cmd/roachtest/roachtestutil/utils.go b/pkg/cmd/roachtest/roachtestutil/utils.go
new file mode 100644
index 000000000000..c7175b0913f1
--- /dev/null
+++ b/pkg/cmd/roachtest/roachtestutil/utils.go
@@ -0,0 +1,19 @@
+// Copyright 2023 The Cockroach Authors.
+//
+// Use of this software is governed by the Business Source License
+// included in the file licenses/BSL.txt.
+//
+// As of the Change Date specified in that file, in accordance with
+// the Business Source License, use of this software will be governed
+// by the Apache License, Version 2.0, included in the file
+// licenses/APL.txt.
+
+package roachtestutil
+
+import "github.com/cockroachdb/cockroach/pkg/roachprod/install"
+
+// SystemInterfaceSystemdUnitName is a convenience function that
+// returns the systemd unit name for the system interface
+func SystemInterfaceSystemdUnitName() string {
+	return install.VirtualClusterLabel(install.SystemInterfaceName, 0)
+}
diff --git a/pkg/cmd/roachtest/tests/decommissionbench.go b/pkg/cmd/roachtest/tests/decommissionbench.go
index b3e302ae2f95..abff5495edac 100644
--- a/pkg/cmd/roachtest/tests/decommissionbench.go
+++ b/pkg/cmd/roachtest/tests/decommissionbench.go
@@ -26,6 +26,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/option"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/registry"
+	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/roachtestutil"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/spec"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test"
 	"github.com/cockroachdb/cockroach/pkg/roachprod/install"
@@ -940,8 +941,8 @@ func runSingleDecommission(
 		if err := h.c.RunE(
 			ctx, h.c.Node(target),
 			fmt.Sprintf("sudo bash -c 'echo \"259:0  %d\" > "+
-				"/sys/fs/cgroup/blkio/system.slice/cockroach.service/blkio.throttle.write_bps_device'",
-				100*(1<<20))); err != nil {
+				"/sys/fs/cgroup/blkio/system.slice/%s.service/blkio.throttle.write_bps_device'",
+				100*(1<<20), roachtestutil.SystemInterfaceSystemdUnitName())); err != nil {
 			return err
 		}
 		// Wait for some time after limiting write bandwidth in order to affect read amplification.
diff --git a/pkg/cmd/roachtest/tests/disk_full.go b/pkg/cmd/roachtest/tests/disk_full.go
index 66175a945708..49f3c0e3940f 100644
--- a/pkg/cmd/roachtest/tests/disk_full.go
+++ b/pkg/cmd/roachtest/tests/disk_full.go
@@ -19,6 +19,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/option"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/registry"
+	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/roachtestutil"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test"
 	"github.com/cockroachdb/cockroach/pkg/roachprod/install"
 	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
@@ -117,9 +118,10 @@ func registerDiskFull(r registry.Registry) {
 					// propagated from roachprod, obscures the Cockroach
 					// exit code. There should still be a record of it
 					// in the systemd logs.
-					result, err := c.RunWithDetailsSingleNode(ctx, t.L(), c.Node(n),
-						`systemctl status cockroach.service | grep 'Main PID' | grep -oE '\((.+)\)'`,
-					)
+					result, err := c.RunWithDetailsSingleNode(ctx, t.L(), c.Node(n), fmt.Sprintf(
+						`systemctl status %s | grep 'Main PID' | grep -oE '\((.+)\)'`,
+						roachtestutil.SystemInterfaceSystemdUnitName(),
+					))
 					if err != nil {
 						t.Fatal(err)
 					}
diff --git a/pkg/cmd/roachtest/tests/disk_stall.go b/pkg/cmd/roachtest/tests/disk_stall.go
index 5e8c00ea75bc..59033e333f16 100644
--- a/pkg/cmd/roachtest/tests/disk_stall.go
+++ b/pkg/cmd/roachtest/tests/disk_stall.go
@@ -21,6 +21,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/cluster"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/option"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/registry"
+	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/roachtestutil"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/spec"
 	"github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test"
 	"github.com/cockroachdb/cockroach/pkg/roachprod/install"
@@ -256,8 +257,8 @@ func getProcessExitMonotonic(
 func getProcessMonotonicTimestamp(
 	ctx context.Context, t test.Test, c cluster.Cluster, nodeID int, prop string,
 ) (time.Duration, bool) {
-	details, err := c.RunWithDetailsSingleNode(ctx, t.L(), c.Node(nodeID),
-		"systemctl show cockroach.service --property="+prop)
+	details, err := c.RunWithDetailsSingleNode(ctx, t.L(), c.Node(nodeID), fmt.Sprintf(
+		"systemctl show %s --property=%s", roachtestutil.SystemInterfaceSystemdUnitName(), prop))
 	require.NoError(t, err)
 	require.NoError(t, details.Err)
 	parts := strings.Split(details.Stdout, "=")