···1-Propagate the --force flag in the legacy drbdadm to drbdsetup.
2-Otherwise "drbdadm primary --force" won't work as expected (the kernel
3-will say "State change failed: Need access to UpToDate data").
4-5-diff -ru -x '*~' drbd-8.4.0-orig/user/legacy/drbdadm_main.c drbd-8.4.0/user/legacy/drbdadm_main.c
6---- drbd-8.4.0-orig/user/legacy/drbdadm_main.c 2011-07-07 06:55:39.000000000 -0400
7-+++ drbd-8.4.0/user/legacy/drbdadm_main.c 2011-11-02 14:51:04.000000000 -0400
8-@@ -1547,6 +1547,7 @@
9- for (i = 0; i < soi; i++) {
10- argv[NA(argc)] = setup_opts[i];
11- }
12-+ if (force) argv[NA(argc)] = "--force";
13- argv[NA(argc)] = 0;
14-15- setenv("DRBD_RESOURCE", res->name, 1);