Based on:
* https://github.com/systemd/systemd/pull/13881
* https://www.redhat.com/archives/linux-lvm/2020-April/msg00003.html
* https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f36776fafbaa0094390dd4e7e3e29805e0b82730

--- a/src/udev/udevadm-trigger.c	2020-03-06 13:38:52.000000000 +0100
+++ b/src/udev/udevadm-trigger.c	2020-04-18 19:25:51.179705429 +0200
@@ -10,6 +10,7 @@
 #include "device-private.h"
 #include "fd-util.h"
 #include "fileio.h"
+#include "id128-util.h"
 #include "path-util.h"
 #include "process-util.h"
 #include "set.h"
@@ -27,6 +28,15 @@
         sd_device *d;
         int r, ret = 0;
 
+        sd_id128_t id;
+        char uuid[ID128_UUID_STRING_MAX];
+        r = sd_id128_randomize(&id);
+        if (r < 0) {
+                log_debug_errno(r, "Failed to generate random UUID: %m");
+                return r;
+        }
+        id128_to_uuid_string(id, uuid);
+
         FOREACH_DEVICE_AND_SUBSYSTEM(e, d) {
                 _cleanup_free_ char *filename = NULL;
                 const char *syspath;
@@ -43,7 +53,11 @@
                 if (!filename)
                         return log_oom();
 
-                r = write_string_file(filename, action, WRITE_STRING_FILE_DISABLE_BUFFER);
+                _cleanup_free_ char *full_action = NULL;
+                full_action = strjoin(action, " ", uuid, " SOURCE=UDEVTRIGGER");
+                if (!full_action)
+                        return log_oom();
+                r = write_string_file(filename, full_action, WRITE_STRING_FILE_DISABLE_BUFFER);
                 if (r < 0) {
                         bool ignore = IN_SET(r, -ENOENT, -EACCES, -ENODEV, -EROFS);