import jcifs.Configuration;
import jcifs.internal.smb2.create.Smb2CloseRequest;
import jcifs.internal.smb2.info.Smb2QueryDirectoryRequest;
import jcifs.internal.smb2.info.Smb2QueryInfoRequest;
import jcifs.internal.smb2.info.Smb2SetInfoRequest;
import jcifs.internal.smb2.io.Smb2FlushRequest;
import jcifs.internal.smb2.io.Smb2ReadRequest;
import jcifs.internal.smb2.io.Smb2WriteRequest;
import jcifs.internal.smb2.ioctl.Smb2IoctlRequest;

        try (SmbFileHandleImpl fh = ensureOpen(); SmbTreeHandleImpl th = fh.getTree()) {
            if (th.isSMB2()) {
                final Smb2SetInfoRequest req = new Smb2SetInfoRequest(th.getConfig(), fh.getFileId());
                req.setFileInformation(new FileEndOfFileInformation(newLength));
                th.send(req, RequestParam.NO_RETRY);

                    log.debug(String.format("Copied a total of %d bytes", off));
                }

                if (dh.isSMB2()) {
                    final Smb2SetInfoRequest req = new Smb2SetInfoRequest(dh.getConfig(), dfd.getFileId());
                    req.setFileInformation(new FileBasicInfo(ctime, atime, mtime, 0L, attrs));
                    dh.send(req);

                }
                init(th);
                if (!append && this.smb2) {
                    // no open option for truncating, need to truncate the file
                    final Smb2SetInfoRequest treq = new Smb2SetInfoRequest(th.getConfig(), fh.getFileId());
                    treq.setFileInformation(new FileEndOfFileInformation(0));
                    th.send(treq, RequestParam.NO_RETRY);
                }
            }

        }
        return false;
    }
    
    private boolean isMetadataOperation(SMBMessage message) {
        return message instanceof Smb2QueryInfoRequest
            || message instanceof Smb2SetInfoRequest
            || message instanceof Smb2QueryDirectoryRequest;
    }
}
```

### 4.5 Channel Failover Handler
```java
package jcifs.internal.smb2.multichannel;

import java.util.concurrent.*;