drbd: Correctly handle resources without volumes

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 4e1beb7..862d69e 100644 (file)
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1095,7 +1095,8 @@ static void conn_reconfig_done(struct drbd_tconn *tconn)
 {
        bool stop_threads;
        spin_lock_irq(&tconn->req_lock);
-       stop_threads = conn_all_vols_unconf(tconn);
+       stop_threads = conn_all_vols_unconf(tconn) &&
+               tconn->cstate == C_STANDALONE;
        spin_unlock_irq(&tconn->req_lock);
        if (stop_threads) {
                /* asender is implicitly stopped by receiver

diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index c4dd667..eafc195 100644 (file)
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -1491,9 +1491,15 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
 void conn_old_common_state(struct drbd_tconn *tconn, union drbd_state *pcs, enum chg_state_flags *pf)
 {
        enum chg_state_flags flags = ~0;
-       union drbd_dev_state os, cs = {}; /* old_state, common_state */
        struct drbd_conf *mdev;
        int vnr, first_vol = 1;
+       union drbd_dev_state os, cs = {
+               { .role = R_SECONDARY,
+                 .peer = R_UNKNOWN,
+                 .conn = tconn->cstate,
+                 .disk = D_DISKLESS,
+                 .pdsk = D_UNKNOWN,
+               } };
 
        rcu_read_lock();
        idr_for_each_entry(&tconn->volumes, mdev, vnr) {
@@ -1574,10 +1580,17 @@ void
 conn_set_state(struct drbd_tconn *tconn, union drbd_state mask, union drbd_state val,
               union drbd_state *pns_min, union drbd_state *pns_max, enum chg_state_flags flags)
 {
-       union drbd_state ns, os, ns_max = { };
+       union drbd_state ns, os, ns_max = {
+               { .role = R_SECONDARY,
+                 .peer = R_UNKNOWN,
+                 .conn = val.conn,
+                 .disk = D_DISKLESS,
+                 .pdsk = D_UNKNOWN
+               } };
        union drbd_state ns_min = {
                { .role = R_MASK,
                  .peer = R_MASK,
+                 .conn = val.conn,
                  .disk = D_MASK,
                  .pdsk = D_MASK
                } };