8000 minio/cmd/admin-heal-ops.go at master · mrvanes/minio · GitHub
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admin-heal-ops.go

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admin-heal-ops.go

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if source.noWait {
select {
case globalBackgroundHealRoutine.tasks <- task:
if serverDebugLog {
logger.Info("Task in the queue: %#v", task)
}
default:
// task queue is full, no more workers, we shall move on and heal later.
return nil
}
// Don't wait for result
return nil
}
// respCh must be set to wait for result.
// We make it size 1, so a result can always be written
// even if we aren't listening.
task.respCh = make(chan healResult, 1)
select {
case globalBackgroundHealRoutine.tasks <- task:
if serverDebugLog {
logger.Info("Task in the queue: %#v", task)
}
case <-h.ctx.Done():
return nil
}
// task queued, now wait for the response.
select {
case res := <-task.respCh:
if !h.reportProgress {
if errors.Is(res.err, errSkipFile) { // this is only sent usually by nopHeal
return nil
}
h.mutex.Lock()
defer h.mutex.Unlock()
// Progress is not reported in case of background heal processing.
// Instead we increment relevant counter based on the heal result
// for prometheus reporting.
if res.err != nil {
for _, d := range res.result.After.Drives {
// For failed items we report the endpoint and drive state
// This will help users take corrective actions for drives
h.healFailedItemsMap[d.Endpoint+","+d.State]++
}
} else {
// Only object type reported for successful healing
h.healedItemsMap[res.result.Type]++
}
// Report caller of any failure
return res.err
}
res.result.Type = healType
if res.err != nil {
// Only report object error
if healType != madmin.HealItemObject {
return res.err
}
res.result.Detail = res.err.Error()
}
return h.pushHealResultItem(res.result)
case <-h.ctx.Done():
return nil
}
}
func (h *healSequence) healDiskMeta(objAPI ObjectLayer) error {
// Start healing the config prefix.
return h.healMinioSysMeta(objAPI, minioConfigPrefix)()
}
func (h *healSequence) healItems(objAPI ObjectLayer, bucketsOnly bool) error {
if h.clientToken == bgHealingUUID {
// For background heal do nothing.
return nil
}
if err := h.healDiskMeta(objAPI); err != nil {
return err
}
// Heal buckets and objects
return h.healBuckets(objAPI, bucketsOnly)
}
// traverseAndHeal - traverses on-disk data and performs healing
// according to settings. At each "safe" point it also checks if an
// external quit signal has been received and quits if so. Since the
// healing traversal may be mutating on-disk data when an external
// quit signal is received, this routine cannot quit immediately and
// has to wait until a safe point is reached, such as between scanning
// two objects.
func (h *healSequence) traverseAndHeal(objAPI ObjectLayer) {
bucketsOnly := false // Heals buckets and objects also.
h.traverseAndHealDoneCh <- h.healItems(objAPI, bucketsOnly)
close(h.traverseAndHealDoneCh)
}
// healMinioSysMeta - heals all files under a given meta prefix, returns a function
// which in-turn heals the respective meta directory path and any files in int.
func (h *healSequence) healMinioSysMeta(objAPI ObjectLayer, metaPrefix string) func() error {
return func() error {
// NOTE: Healing on meta is run regardless
// of any bucket being selected, this is to ensure that
// meta are always upto date and correct.
return objAPI.HealObjects(h.ctx, minioMetaBucket, metaPrefix, h.settings, func(bucket, object, versionID string) error {
if h.isQuitting() {
return errHealStopSignalled
}
err := h.queueHealTask(healSource{
bucket: bucket,
object: object,
versionID: versionID,
}, madmin.HealItemBucketMetadata)
return err
})
}
}
// healBuckets - check for all buckets heal or just particular bucket.
func (h *healSequence) healBuckets(objAPI ObjectLayer, bucketsOnly bool) error {
if h.isQuitting() {
return errHealStopSignalled
}
// 1. If a bucket was specified, heal only the bucket.
if h.bucket != "" {
return h.healBucket(objAPI, h.bucket, bucketsOnly)
}
buckets, err := objAPI.ListBuckets(h.ctx, BucketOptions{})
if err != nil {
return errFnHealFromAPIErr(h.ctx, err)
}
// Heal latest buckets first.
sort.Slice(buckets, func(i, j int) bool {
return buckets[i].Created.After(buckets[j].Created)
})
for _, bucket := range buckets {
if err = h.healBucket(objAPI, bucket.Name, bucketsOnly); err != nil {
return err
}
}
return nil
}
// healBucket - traverses and heals given bucket
func (h *healSequence) healBucket(objAPI ObjectLayer, bucket string, bucketsOnly bool) error {
if err := h.queueHealTask(healSource{bucket: bucket}, madmin.HealItemBucket); err != nil {
return err
}
if bucketsOnly {
return nil
}
if !h.settings.Recursive {
if h.object != "" {
if err := h.healObject(bucket, h.object, ""); err != nil {
return err
}
}
return nil
}
if err := objAPI.HealObjects(h.ctx, bucket, h.object, h.settings, h.healObject); err != nil {
return errFnHealFromAPIErr(h.ctx, err)
}
return nil
}
// healObject - heal the given object and record result
func (h *healSequence) healObject(bucket, object, versionID string) error {
if h.isQuitting() {
return errHealStopSignalled
}
err := h.queueHealTask(healSource{
bucket: bucket,
object: object,
versionID: versionID,
opts: &h.settings,
}, madmin.HealItemObject)
// Wait and proceed if there are active requests
waitForLowHTTPReq()
return err
}
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