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https://issues.apache.org/jira/browse/IO-586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb resolved IO-586.
---------------------
Resolution: Information Provided
The code no longer uses FileChannel.transferFrom.
It uses java.nio.file.Files.copy instead since version 2.7
If the problem persists in 2.7 please raise another issue.
> FileUtils.copyFile fails with java.io.IOException: No such device
> -----------------------------------------------------------------
>
> Key: IO-586
> URL: https://issues.apache.org/jira/browse/IO-586
> Project: Commons IO
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 2.6
> Reporter: Andy
> Priority: Major
>
> When trying to copy file on CEPH filesystem, FileUtils.copyFile fails with
> exception. I don't see any workaround except of replacing that call and
> rebuilding the project.
> *Test Case*:
> Here's a simple class to reproduce the issue:
>
>
> {code:java}
> import org.apache.commons.io.FileUtils;
> import java.io.File;
> import java.io.IOException;
> import java.io.PrintWriter;
> import java.nio.file.Files;
> public class Test3 {
> public static void main(String[] args) throws IOException {
> PrintWriter writer = new PrintWriter("file.txt", "UTF-8");
> writer.println("test input " + Math.random());
> writer.close();
> FileUtils.copyFile(new File("file.txt"), new File("file-copy.txt"));
> }
> }
> {code}
> below is the stacktrace:
> {code:java}
> Exception in thread "main" java.io.IOException: No such device at
> sun.nio.ch.FileChannelImpl.map0(Native Method) at
> sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:926) at
> sun.nio.ch.FileChannelImpl.transferFromFileChannel(FileChannelImpl.java:634)
> at sun.nio.ch.FileChannelImpl.transferFrom(FileChannelImpl.java:708) at
> org.apache.commons.io.FileUtils.doCopyFile(FileUtils.java:1131) at
> org.apache.commons.io.FileUtils.copyFile(FileUtils.java:1076) at
> org.apache.commons.io.FileUtils.copyFile(FileUtils.java:1028) at
> ztst.Test3.main(Test3.java:17)
> {code}
> Here's our server's file system configuration:
> {code:java}
> 1. a squashfs (read only) image stored on a ceph's rbd
> 2. a directory on cephfs (read/write)
> 1 is the lower layer and 2 is the upper layer of an unionfs mount with the
> following options:
> cow
> max_files=32768
> allow_other
> use_ino
> direct_io
> statfs_omit_ro
> nonempty
> {code}
>
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