@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

          sudo sysctl net.ipv6.conf.default.disable_ipv6=0
          make verify-healing
          make verify-healing-inconsistent-versions
          make verify-healing-with-root-disks

<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

			healthy := erasureSetUpCount[poolIdx][setIdx].online >= poolWriteQuorums[poolIdx]
			if !healthy && !opts.NoLogging {
				storageLogIf(logger.SetReqInfo(ctx, reqInfo),
					fmt.Errorf("Write quorum could not be established on pool: %d, set: %d, expected write quorum: %d, drives-online: %d",
						poolIdx, setIdx, poolWriteQuorums[poolIdx], erasureSetUpCount[poolIdx][setIdx].online), logger.FatalKind)
			}

			debugln("WRITE 2\t", writeRng.Intn(len(buf)), wroteBytes)

			// WriteByte
			err = rb.WriteByte(buf[0])
			if err != nil {
				t.Fatalf("write failed: %v", err)
			}
			wroteBytes++
			wrote.Write(buf[:1])
			debugln("WRITE 3\t", 1, wroteBytes)

			// TryWrite
			n, err = rb.TryWrite(buf[:writeRng.Intn(len(buf))])

	}
}

// 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

				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
			}