| /* |
| * 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.ignite.internal.processors.compress; |
| |
| import java.io.FileDescriptor; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.junit.Test; |
| |
| import static java.nio.file.StandardOpenOption.READ; |
| import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING; |
| import static java.nio.file.StandardOpenOption.WRITE; |
| import static org.apache.ignite.internal.processors.compress.CompressionProcessorImpl.allocateDirectBuffer; |
| import static org.apache.ignite.internal.processors.compress.FileSystemUtils.getFileSystemBlockSize; |
| import static org.apache.ignite.internal.processors.compress.FileSystemUtils.getSparseFileSize; |
| import static org.apache.ignite.internal.processors.compress.FileSystemUtils.punchHole; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| */ |
| public class FileSystemUtilsTest { |
| /** |
| * @throws Exception If failed. |
| */ |
| @Test |
| public void testSparseFiles() throws Exception { |
| if (!U.isLinux()) |
| return; |
| |
| Path file = Files.createTempFile("test_sparse_file_", ".bin"); |
| |
| try { |
| doTestSparseFiles(file, false); // Ext4 expected as default FS. |
| } |
| finally { |
| Files.delete(file); |
| } |
| } |
| |
| /** |
| * @throws Exception If failed. |
| */ |
| public void _testFileSystems() throws Exception { |
| doTestSparseFiles(Paths.get("/ext4/test_file"), false); |
| doTestSparseFiles(Paths.get("/btrfs/test_file"), false); |
| doTestSparseFiles(Paths.get("/xfs/test_file"), true); |
| } |
| |
| /** */ |
| private static int getFD(FileChannel ch) throws IgniteCheckedException { |
| return U.<Integer>field(U.<FileDescriptor>field(ch, "fd"), "fd"); |
| } |
| |
| /** |
| * @param file File path. |
| * @param reopen Reopen file after each hole punch. XFS needs it. |
| * @throws Exception If failed. |
| */ |
| private void doTestSparseFiles(Path file, boolean reopen) throws Exception { |
| System.out.println(file); |
| |
| FileChannel ch = FileChannel.open(file, |
| READ, WRITE, TRUNCATE_EXISTING); |
| |
| try { |
| int fd = getFD(ch); |
| |
| int fsBlockSize = getFileSystemBlockSize(fd); |
| |
| System.out.println("fsBlockSize: " + fsBlockSize); |
| |
| assertTrue(fsBlockSize > 0); |
| |
| int pageSize = fsBlockSize * 4; |
| |
| ByteBuffer page = allocateDirectBuffer(pageSize); |
| |
| while (page.remaining() > 0) |
| page.putLong(0xABCDEF7654321EADL); |
| page.flip(); |
| |
| int pages = 5; |
| int blocks = pages * pageSize / fsBlockSize; |
| int fileSize = pages * pageSize; |
| int sparseSize = fileSize; |
| |
| for (int i = 0; i < pages; i++) { |
| ch.write(page, i * pageSize); |
| assertEquals(0, page.remaining()); |
| page.flip(); |
| } |
| |
| if (reopen) { |
| ch.force(true); |
| ch.close(); |
| ch = FileChannel.open(file, READ, WRITE); |
| fd = getFD(ch); |
| } |
| |
| assertEquals(fileSize, ch.size()); |
| assertEquals(fileSize, getSparseFileSize(fd)); |
| |
| int off = fsBlockSize * 3 - (fsBlockSize >>> 2); |
| int len = fsBlockSize; |
| assertEquals(0, punchHole(fd, off, len, fsBlockSize)); |
| if (reopen) { |
| ch.force(true); |
| ch.close(); |
| ch = FileChannel.open(file, READ, WRITE); |
| fd = getFD(ch); |
| } |
| assertEquals(fileSize, getSparseFileSize(fd)); |
| |
| off = 2 * fsBlockSize - 3; |
| len = 2 * fsBlockSize + 3; |
| assertEquals(2 * fsBlockSize, punchHole(fd, off, len, fsBlockSize)); |
| if (reopen) { |
| ch.force(true); |
| ch.close(); |
| ch = FileChannel.open(file, READ, WRITE); |
| fd = getFD(ch); |
| } |
| assertEquals(sparseSize -= 2 * fsBlockSize, getSparseFileSize(fd)); |
| |
| off = 10 * fsBlockSize; |
| len = 3 * fsBlockSize + 5; |
| assertEquals(3 * fsBlockSize, punchHole(fd, off, len, fsBlockSize)); |
| if (reopen) { |
| ch.force(true); |
| ch.close(); |
| ch = FileChannel.open(file, READ, WRITE); |
| fd = getFD(ch); |
| } |
| assertEquals(sparseSize -= 3 * fsBlockSize, getSparseFileSize(fd)); |
| |
| off = 15 * fsBlockSize + 1; |
| len = fsBlockSize; |
| assertEquals(0, punchHole(fd, off, len, fsBlockSize)); |
| |
| off = 15 * fsBlockSize - 1; |
| len = fsBlockSize; |
| assertEquals(0, punchHole(fd, off, len, fsBlockSize)); |
| |
| off = 15 * fsBlockSize; |
| len = fsBlockSize - 1; |
| assertEquals(0, punchHole(fd, off, len, fsBlockSize)); |
| |
| off = 15 * fsBlockSize; |
| len = fsBlockSize; |
| assertEquals(fsBlockSize, punchHole(fd, off, len, fsBlockSize)); |
| if (reopen) { |
| ch.force(true); |
| ch.close(); |
| ch = FileChannel.open(file, READ, WRITE); |
| fd = getFD(ch); |
| } |
| assertEquals(sparseSize -= fsBlockSize, getSparseFileSize(fd)); |
| |
| for (int i = 0; i < blocks - 1; i++) |
| punchHole(fd, fsBlockSize * i, fsBlockSize, fsBlockSize); |
| |
| if (reopen) { |
| ch.force(true); |
| ch.close(); |
| ch = FileChannel.open(file, READ, WRITE); |
| fd = getFD(ch); |
| } |
| |
| assertEquals(fsBlockSize, getSparseFileSize(fd)); |
| } |
| finally { |
| ch.close(); |
| } |
| } |
| |
| } |