osd/OSDMap: get_up_osd_features()

Signed-off-by: Sage Weil <sage@inktank.com>
Mirantis · Jan 10, 2014 · 1d8429d · 1d8429d
1 parent b8dfcc1
commit 1d8429d
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Showing 2 changed files with 23 additions and 0 deletions.
diff --git a/src/osd/OSDMap.cc b/src/osd/OSDMap.cc
@@ -829,6 +829,24 @@ uint64_t OSDMap::get_features(uint64_t *pmask) const
   return features;
 }
 
+uint64_t OSDMap::get_up_osd_features() const
+{
+  bool first = true;
+  uint64_t features = 0;
+  for (int osd = 0; osd < max_osd; ++osd) {
+    if (!is_up(osd))
+      continue;
+    const osd_xinfo_t &xi = get_xinfo(osd);
+    if (first) {
+      features = xi.features;
+      first = false;
+    } else {
+      features &= xi.features;
+    }
+  }
+  return features;
+}
+
 void OSDMap::dedup(const OSDMap *o, OSDMap *n)
 {
   if (o->epoch == n->epoch)

diff --git a/src/osd/OSDMap.h b/src/osd/OSDMap.h
@@ -450,6 +450,11 @@ class OSDMap {
    */
   uint64_t get_features(uint64_t *mask) const;
 
+  /**
+   * get intersection of features supported by up osds
+   */
+  uint64_t get_up_osd_features() const;
+
   int apply_incremental(const Incremental &inc);
 
   /// try to re-use/reference addrs in oldmap from newmap