[PATCH 04/30] mds: adjust subtree auth if import aborts in PREPPED state

[Yan, Zheng]

From: "Yan, Zheng" <zheng.z....@intel.com>

Signed-off-by: Yan, Zheng <zheng.z....@intel.com>
---
 src/mds/Migrator.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/mds/Migrator.cc b/src/mds/Migrator.cc
index 565d45d..8103a52 100644
--- a/src/mds/Migrator.cc
+++ b/src/mds/Migrator.cc
@@ -397,7 +397,7 @@ void Migrator::handle_mds_failure_or_stop(int who)
          cache->get_subtree_bounds(dir, bounds);
          import_remove_pins(dir, bounds);
          
-         // adjust auth back to me
+         // adjust auth back to the exporter
          cache->adjust_subtree_auth(dir, import_peer[df]);
          cache->try_subtree_merge(dir);   // NOTE: may journal subtree_map as 
side-effect
 
@@ -1684,6 +1684,12 @@ void Migrator::handle_export_cancel(MExportDirCancel *m)
   } else if (import_state[df] == IMPORT_PREPPED) {
     CDir *dir = mds->mdcache->get_dirfrag(df);
     assert(dir);
+    set<CDir*> bounds;
+    cache->get_subtree_bounds(dir, bounds);
+    import_remove_pins(dir, bounds);
+    // adjust auth back to the exportor
+    cache->adjust_subtree_auth(dir, import_peer[df]);
+    cache->try_subtree_merge(dir);
     import_reverse_unfreeze(dir);
   } else {
     assert(0 == "got export_cancel in weird state");
-- 
1.8.1.4

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