Github user animeshtrivedi commented on a diff in the pull request:

    https://github.com/apache/incubator-crail/pull/16#discussion_r180318375
  
    --- Diff: 
storage-nvmf/src/main/java/org/apache/crail/storage/nvmf/client/NvmfUnalignedWriteFuture.java
 ---
    @@ -0,0 +1,183 @@
    +/*
    + * Copyright (C) 2018, IBM Corporation
    + *
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You under the Apache License, Version 2.0
    + * (the "License"); you may not use this file except in compliance with
    + * the License.  You may obtain a copy of the License at
    + *
    + *    http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.crail.storage.nvmf.client;
    +
    +import org.apache.crail.CrailBuffer;
    +import org.apache.crail.metadata.BlockInfo;
    +import org.apache.crail.storage.StorageFuture;
    +import org.apache.crail.storage.StorageResult;
    +
    +import java.util.concurrent.ExecutionException;
    +import java.util.concurrent.TimeUnit;
    +import java.util.concurrent.TimeoutException;
    +
    +
    +public class NvmfUnalignedWriteFuture implements StorageFuture {
    +   private final NvmfStorageEndpoint endpoint;
    +   private StorageFuture beginFuture;
    +   private StorageFuture middleFuture;
    +   private StorageFuture endFuture;
    +   private final int written;
    +   private NvmfStagingBufferCache.BufferCacheEntry beginBuffer;
    +   private NvmfStagingBufferCache.BufferCacheEntry endBuffer;
    +
    +   private final boolean isSectorAligned(long address) {
    +           return address % endpoint.getLBADataSize() == 0;
    +   }
    +
    +   private final long floorToSectorSize(long address) {
    +           return address - (address % endpoint.getLBADataSize());
    --- End diff --
    
    use your own function? (offsetInSector) "return address - offsetInSector; "


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