1. OperationFailure: command SON([('filemd5', ObjectId('518ec7d84b8aa41dec957d3c')), ('root', u'fs')]) failed: need an index on { files_id : 1 , n : 1 }
  2.  
  3. > use test_repoapi
  4. switched to db test_repoapi
  5. > show collections
  6. fs.chunks
  7. system.indexes
  8. users