os/bluestore:reshard-fix wrong shard length

change fault_range parameter from 'needs_reshard_end' to 'needs_reshard_end-needs_reshard_begin'
be given needs_reshard_end may be out of bounds

Signed-off-by: chenliuzhong <liuzhong.chen@easystack.cn>
(cherry picked from commit 23bce6a9504955d7faf352242d88d26d4fe7ac96)

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index b87d0302b306a9fc5526e001391e0f67cf9f2b4d..2bbe03f0e6347c42cd95b0c34615e29d7be0a25b 100644 (file)
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -2133,7 +2133,7 @@ void BlueStore::ExtentMap::reshard(
             << needs_reshard_end << ")" << std::dec << dendl;
   }
 
-  fault_range(db, needs_reshard_begin, needs_reshard_end);
+  fault_range(db, needs_reshard_begin, (needs_reshard_end - needs_reshard_begin));
 
   // we may need to fault in a larger interval later must have all
   // referring extents for spanning blobs loaded in order to have