[DLM] show nodeid for recovery message

To aid debugging, it's useful to be able to see what nodeid the dlm is
waiting on for a message reply.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

4 files changed, 16 insertions, 1 deletions

diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 7c3c2d27c012..ec7e401133fd 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -467,6 +467,7 @@ struct dlm_ls {
         struct list_head        ls_requestqueue;/* queue remote requests */
         struct mutex            ls_requestqueue_mutex;
         char                    *ls_recover_buf;
+        int                     ls_recover_nodeid; /* for debugging */
         struct list_head        ls_recover_list;
         spinlock_t              ls_recover_list_lock;
         int                     ls_recover_list_count;
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 31ed0fe16a31..7adaad53fc38 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -81,6 +81,11 @@ static ssize_t dlm_recover_status_show(struct dlm_ls *ls, char *buf)
         return sprintf(buf, "%x\n", status);
 }
 
+static ssize_t dlm_recover_nodeid_show(struct dlm_ls *ls, char *buf)
+{
+        return sprintf(buf, "%d\n", ls->ls_recover_nodeid);
+}
+
 struct dlm_attr {
         struct attribute attr;
         ssize_t (*show)(struct dlm_ls *, char *);
@@ -108,11 +113,17 @@ static struct dlm_attr dlm_attr_recover_status = {
         .show  = dlm_recover_status_show
 };
 
+static struct dlm_attr dlm_attr_recover_nodeid = {
+        .attr  = {.name = "recover_nodeid", .mode = S_IRUGO},
+        .show  = dlm_recover_nodeid_show
+};
+
 static struct attribute *dlm_attrs[] = {
         &dlm_attr_control.attr,
         &dlm_attr_event.attr,
         &dlm_attr_id.attr,
         &dlm_attr_recover_status.attr,
+        &dlm_attr_recover_nodeid.attr,
         NULL,
 };
 
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index ebb33c30f0f3..a3f7de7f3a8f 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -176,7 +176,8 @@ static int ping_members(struct dlm_ls *ls)
                         break;
         }
         if (error)
-                log_debug(ls, "ping_members aborted %d", error);
+                log_debug(ls, "ping_members aborted %d last nodeid %d",
+                          error, ls->ls_recover_nodeid);
         return error;
 }
 
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index 55fbe313340e..5573d8590e58 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -97,6 +97,7 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid)
         int error = 0;
 
         memset(ls->ls_recover_buf, 0, dlm_config.buffer_size);
+        ls->ls_recover_nodeid = nodeid;
 
         if (nodeid == dlm_our_nodeid()) {
                 rc = (struct dlm_rcom *) ls->ls_recover_buf;
@@ -159,6 +160,7 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
         int error = 0, len = sizeof(struct dlm_rcom);
 
         memset(ls->ls_recover_buf, 0, dlm_config.buffer_size);
+        ls->ls_recover_nodeid = nodeid;
 
         if (nodeid == dlm_our_nodeid()) {
                 dlm_copy_master_names(ls, last_name, last_len,