@echo "Verify healing with root drives"
	@(env bash $(PWD)/buildscripts/verify-healing-with-root-disks.sh)

verify-healing-with-rewrite: install-race ## verify healing to rewrite old xl.meta -> new xl.meta
	@echo "Verify healing with rewrite"
	@(env bash $(PWD)/buildscripts/rewrite-old-new.sh)

verify-healing-inconsistent-versions: install-race ## verify resolving inconsistent versions

<p>
Note that if there are no read-write or write-write data races on memory location <i>x</i>,
then any read <i>r</i> on <i>x</i> has only one possible <i>W</i>(<i>r</i>):
the single <i>w</i> that immediately precedes it in the happens before order.
</p>

<p>
More generally, it can be shown that any Go program that is data-race-free,
meaning it has no program executions with read-write or write-write data races,

}

// RenameDataResp - RenameData()'s response.
// Provides information about the final state of Rename()
//   - on xl.meta (array of versions) on disk to check for version disparity
//   - on rewrite dataDir on disk that must be additionally purged
//     only after as a 2-phase call, allowing the older dataDir to
//     hang-around in-case we need some form of recovery.
type RenameDataResp struct {

	}

	// TODO: It seems like we may have to be prepared to rewrite and sort trailing headers:
	// https://docs.aws.amazon.com/IAM/latest/UserGuide/create-signed-request.html

	// Any value must end with a newline.
	// Not all clients send that.
	trailerRaw := valueBuffer.Bytes()
	if len(trailerRaw) > 0 && trailerRaw[len(trailerRaw)-1] != '\n' {
		valueBuffer.Write([]byte{'\n'})
	}
	sig = sig[len("x-amz-trailer-signature:"):]

			}

			// Heal each part. erasure.Heal() will write the healed
			// part to .minio/tmp/uuid/ which needs to be renamed
			// later to the final location.
			err = erasure.Heal(ctx, writers, readers, partSize, prefer)
			closeBitrotReaders(readers)
			closeErrs := closeBitrotWriters(writers)
			if err != nil {
				return result, err
			}

			// outDatedDisks that had write errors should not be

                "- Otherwise, preserve the original translation LINE-BY-LINE, AS-IS.",
                "Do not:",
                "- rephrase or rewrite correct lines just to improve the style.",
                "- add or remove line breaks, unless the original English content changed.",
                "- change formatting or whitespace unless absolutely required.",

				spent := time.Since(started)
				goOffline(fmt.Errorf("unable to write+read for %v", spent.Round(time.Millisecond)), spent)
			}
		}()

		func() {
			defer dcancel()

			err := p.storage.WriteAll(ctx, minioMetaTmpBucket, fn, toWrite)
			if err != nil {
				if osErrToFileErr(err) == errFaultyDisk {
					goOffline(fmt.Errorf("unable to write: %w", err), 0)
				}
				return
			}

	buf := new(bytes.Buffer)
	binary.Write(buf, binary.BigEndian, uint32(totalLength))
	binary.Write(buf, binary.BigEndian, uint32(headerLength))
	prelude := buf.Bytes()
	binary.Write(buf, binary.BigEndian, crc32.ChecksumIEEE(prelude))
	buf.Write(header)
	if payload != nil {
		buf.Write(payload)
	}
	message := buf.Bytes()
	binary.Write(buf, binary.BigEndian, crc32.ChecksumIEEE(message))

	return buf.Bytes()

	}
}

// SetBlocking sets the blocking mode of the ring buffer.
// If block is true, Read and Write will block when there is no data to read or no space to write.
// If block is false, Read and Write will return ErrIsEmpty or ErrIsFull immediately.
// By default, the ring buffer is not blocking.
// This setting should be called before any Read or Write operation or after a Reset.
func (r *RingBuffer) SetBlocking(block bool) *RingBuffer {
	r.block = block

				// concurrently, check for it before we
				// write the filler byte.
				select {
				case err := <-doneCh:
					if err != nil {
						write([]byte{1})
						write([]byte(err.Error()))
					} else {
						write([]byte{0})
					}
					return
				default:
				}

				// Response not ready, write a filler byte.
				write([]byte{32})
				if canWrite {
					xhttp.Flush(w)
				}