# Bucket Versioning Design Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/)

## Description of `xl.meta`

`xl.meta` is a new self describing backend format used by MinIO to support AWS S3 compatible versioning.
This file is the source of truth for each `version` at rest. `xl.meta` is a msgpack file serialized from a

package cmd

import (
	"strings"
	"sync"
	"sync/atomic"
	"time"
	"unsafe"

	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/bucket/lifecycle"
)

//go:generate stringer -type=scannerMetric -trimprefix=scannerMetric $GOFILE

type scannerMetric uint8

type scannerMetrics struct {
	// All fields must be accessed atomically and aligned.

	defer xioutil.SafeClose(resp)

	volumeDir := pathJoin(s.drivePath, req.Bucket)
	found := 0
	for _, f := range req.Files {
		if contextCanceled(ctx) {
			return ctx.Err()
		}
		r := ReadMultipleResp{
			Bucket: req.Bucket,
			Prefix: req.Prefix,
			File:   f,
		}

		var data []byte
		var mt time.Time

    name: Scorecards analysis
    runs-on: ubuntu-latest
    permissions:
      # Needed to upload the results to code-scanning dashboard.
      security-events: write
      # Needed to publish results and get a badge (see publish_results below).
      id-token: write

    steps:
      - name: "Checkout code"
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:

	if hip.bucket == "" {
		if hip.objPrefix != "" {
			// Bucket is required if object-prefix is given
			err = ErrHealMissingBucket
			return
		}
	} else if isReservedOrInvalidBucket(hip.bucket, false) {
		err = ErrInvalidBucketName
		return
	}

	// empty prefix is valid.
	if !IsValidObjectPrefix(hip.objPrefix) {
		err = ErrInvalidObjectName
		return
	}

			Optional:    true,
			Type:        "boolean",
		},
		config.HelpKV{
			Key:         apiSyncEvents,
			Description: "set to enable synchronous bucket notifications" + defaultHelpPostfix(apiSyncEvents),
			Optional:    true,
			Type:        "boolean",
		},
		config.HelpKV{
			Key:         apiObjectMaxVersions,

	setRequestLimitMiddleware,
	// Validate all the incoming requests.
	setRequestValidityMiddleware,
	// Add upload forwarding middleware for site replication
	setUploadForwardingMiddleware,
	// Add bucket forwarding middleware
	setBucketForwardingMiddleware,
	// Add new middlewares here.
}

// configureServer handler returns final handler for the http server.

ÑJ©ªPartASizes ÑJ©€SizeÑJ©¥MTimeÓ ¹ô O/>§MetaSys Œx-minio-internal-inline-dataÄ true§MetaUsr ¬content-type­text/markdown€etagÙ 4af243ccccbadaf12545¡vÎeçnÐÎÓ° , €nullÅ%u&vÎ e ( [ ðK Ô X· Øü *š ÂWåion. Certain features such as versioning, object locking, and bucket replication require distributed deploying MinIO with Erasure Coding. For extended development and production, deploy MinIO with Erasure Coding enabled - specifically, with a *minimum* of 4 drives per MinIO server. See [MinIO Erasure Code Overview...

	}
	return nums
}

// Reads all `xl.meta` metadata as a FileInfo slice.
// Returns error slice indicating the failed metadata reads.
func readAllFileInfo(ctx context.Context, disks []StorageAPI, origbucket string, bucket, object, versionID string, readData, healing bool) ([]FileInfo, []error) {
	metadataArray := make([]FileInfo, len(disks))

	opts := ReadOptions{
		ReadData: readData,
		Healing:  healing,
	}

            stage,
            flameGraphGenerationBuildSpec,
            description = "Flame graphs with $profiler for ${performanceScenario.scenario.scenario} | ${performanceScenario.testProject} on ${os.asName()} (bucket $bucketIndex)",
            performanceSubProject = "performance",
            bucketIndex = bucketIndex,