New APIs: pvchange-uuid, pvchange-uuid-all, vgchange-uuid, vgchange-uuid-all.

These APIs will allow sysprep to change the UUIDs of all PVs and VGs
in the system.

LVs don't have UUIDs AFAICT, or at least there seems to be no way to
change them if they do have them.

daemon/lvm.c

@@ -960,3 +960,87 @@ do_vgmeta (const char *vg, size_t *size_r)
 
   return buf;			/* caller will free */
 }
+
+int
+do_pvchange_uuid (const char *device)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err,
+               "lvm", "pvchange", "-u", device, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", device, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_pvchange_uuid_all (void)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err,
+               "lvm", "pvchange", "-u", "-a", NULL);
+  if (r == -1) {
+    reply_with_error ("%s", err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_vgchange_uuid (const char *vg)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err,
+               "lvm", "vgchange", "-u", vg, NULL);
+  if (r == -1) {
+    reply_with_error ("%s: %s", vg, err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}
+
+int
+do_vgchange_uuid_all (void)
+{
+  char *err;
+  int r;
+
+  r = command (NULL, &err,
+               "lvm", "vgchange", "-u", NULL);
+  if (r == -1) {
+    reply_with_error ("%s", err);
+    free (err);
+    return -1;
+  }
+
+  free (err);
+
+  udev_settle ();
+
+  return 0;
+}

generator/generator_actions.ml

@@ -8975,6 +8975,68 @@ The returned struct contains geometry information.  Missing
 fields are returned as C<-1> (for numeric fields) or empty
 string." };
 
+  { defaults with
+    name = "pvchange_uuid";
+    style = RErr, [Device "device"], [];
+    proc_nr = Some 338;
+    optional = Some "lvm2";
+    tests = [
+      InitEmpty, IfAvailable "lvm2", TestRun (
+        [["part_disk"; "/dev/sda"; "mbr"];
+         ["pvcreate"; "/dev/sda1"];
+         ["pvchange_uuid"; "/dev/sda1"]])
+    ];
+    shortdesc = "generate a new random UUID for a physical volume";
+    longdesc = "\
+Generate a new random UUID for the physical volume C<device>." };
+
+  { defaults with
+    name = "pvchange_uuid_all";
+    style = RErr, [], [];
+    proc_nr = Some 339;
+    optional = Some "lvm2";
+    tests = [
+      InitEmpty, IfAvailable "lvm2", TestRun (
+        [["part_disk"; "/dev/sda"; "mbr"];
+         ["pvcreate"; "/dev/sda1"];
+         ["pvchange_uuid_all"]])
+    ];
+    shortdesc = "generate new random UUIDs for all physical volumes";
+    longdesc = "\
+Generate new random UUIDs for all physical volumes." };
+
+  { defaults with
+    name = "vgchange_uuid";
+    style = RErr, [String "vg"], [];
+    proc_nr = Some 340;
+    optional = Some "lvm2";
+    tests = [
+      InitEmpty, IfAvailable "lvm2", TestRun (
+        [["part_disk"; "/dev/sda"; "mbr"];
+         ["pvcreate"; "/dev/sda1"];
+         ["vgcreate"; "VG"; "/dev/sda1"];
+         ["vgchange_uuid"; "/dev/VG"]])
+    ];
+    shortdesc = "generate a new random UUID for a volume group";
+    longdesc = "\
+Generate a new random UUID for the volume group C<vg>." };
+
+  { defaults with
+    name = "vgchange_uuid_all";
+    style = RErr, [], [];
+    proc_nr = Some 341;
+    optional = Some "lvm2";
+    tests = [
+      InitEmpty, IfAvailable "lvm2", TestRun (
+        [["part_disk"; "/dev/sda"; "mbr"];
+         ["pvcreate"; "/dev/sda1"];
+         ["vgcreate"; "VG"; "/dev/sda1"];
+         ["vgchange_uuid_all"]])
+    ];
+    shortdesc = "generate new random UUIDs for all volume groups";
+    longdesc = "\
+Generate new random UUIDs for all volume groups." };
+
 ]
 
 (* Non-API meta-commands available only in guestfish.

src/MAX_PROC_NR

@@ -1 +1 @@
-337
+341