"github.com/minio/minio/internal/logger"
)

// Erasure - erasure encoding details.
type Erasure struct {
	encoder                  func() reedsolomon.Encoder
	dataBlocks, parityBlocks int
	blockSize                int64
}

// NewErasure creates a new ErasureStorage.
func NewErasure(ctx context.Context, dataBlocks, parityBlocks int, blockSize int64) (e Erasure, err error) {
	// Check the parameters for sanity now.

		writers := make([]io.Writer, len(disks))
		for i, disk := range disks {
			writers[i] = newBitrotWriter(disk, "", "testbucket", "testobject", erasure.ShardFileSize(test.size), test.algorithm, erasure.ShardSize())
		}
		_, err = erasure.Encode(context.Background(), bytes.NewReader(data), writers, buffer, erasure.dataBlocks+1)
		closeBitrotWriters(writers)
		if err != nil {
			t.Fatalf("Test %d: failed to create random test data: %v", i, err)
		}

	shardSize     int64
	shardFileSize int64
	buf           [][]byte
	readerToBuf   []int
	stashBuffer   []byte
}

// newParallelReader returns parallelReader.
func newParallelReader(readers []io.ReaderAt, e Erasure, offset, totalLength int64) *parallelReader {
	r2b := make([]int, len(readers))
	for i := range r2b {
		r2b[i] = i
	}
	bufs := make([][]byte, len(readers))
	shardSize := int(e.ShardSize())
	var b []byte

	if err != errInvalidArgument {
		t.Fatalf("Expecting error, got %s", err)
	}

	// Initializes all erasure disks
	storageDisks, format, err := waitForFormatErasure(true, endpoints, 1, 1, 16, "")
	if err != nil {
		t.Fatalf("Unable to format drives for erasure, %s", err)
	}

	ep := PoolEndpoints{Endpoints: endpoints}

	parity, err := ecDrivesNoConfig(16)
	if err != nil {

	return fmt.Errorf("%w (offline-disks=%d/%d)", writeErr, countErrs(p.errs, errDiskNotFound), len(p.writers))
}

// Encode reads from the reader, erasure-encodes the data and writes to the writers.
func (e *Erasure) Encode(ctx context.Context, src io.Reader, writers []io.Writer, buf []byte, quorum int) (total int64, err error) {
	writer := &multiWriter{
		writers:     writers,
		writeQuorum: quorum,

	erasureSetReadQuorumMD = NewGaugeMD(erasureSetReadQuorum,
		"Read quorum for the erasure set in a pool", poolIDL, setIDL)
	erasureSetWriteQuorumMD = NewGaugeMD(erasureSetWriteQuorum,
		"Write quorum for the erasure set in a pool", poolIDL, setIDL)
	erasureSetOnlineDrivesCountMD = NewGaugeMD(erasureSetOnlineDrivesCount,
		"Count of online drives in the erasure set in a pool", poolIDL, setIDL)

			chmod +x /tmp/mc
	fi
}

function perform_test() {
	start_minio_3_node $2

	echo "Testing Distributed Erasure setup healing of drives"
	echo "Remove the contents of the disks belonging to '${1}' erasure set"

	rm -rf ${WORK_DIR}/${1}/*/

	set -x
	start_minio_3_node $2
}

function main() {
	# use same ports for all tests

	meta := objLayer1.(*erasureServerPools).poolMeta
	pools := objLayer1.(*erasureServerPools).serverPools

	objLayer2, fsDirs, err := prepareErasurePools()
	if err != nil {
		t.Fatalf("Initialization of object layer failed for Erasure setup: %s", err)
	}
	defer removeRoots(fsDirs)

	newPools := objLayer2.(*erasureServerPools).serverPools
	reducedPools := pools[1:]
	orderChangePools := []*erasureSets{
		pools[1],
		pools[0],
	}

Harshavardhana <******@****.***> 1706667105 -0800

# MinIO Erasure Code Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

MinIO protects data against hardware failures and silent data corruption using erasure code and checksums. With the highest level of redundancy, you may lose up to half (N/2) of the total drives and still be able to recover the data.

## What is Erasure Code?