func (e PartTooSmall) Error() string {
	return fmt.Sprintf("Part size for %d should be at least 5MB", e.PartNumber)
}

// PartTooBig returned if size of part is bigger than the allowed limit.
type PartTooBig struct{}

func (e PartTooBig) Error() string {
	return "Part size bigger than the allowed limit"
}

// InvalidETag error returned when the etag has changed on disk
type InvalidETag struct{}

	}

	objAPI := api.ObjectAPI()
	if objAPI == nil {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
		return
	}

	// Tags XML will not be bigger than 1MiB in size, fail if its bigger.
	tags, err := tags.ParseObjectXML(io.LimitReader(r.Body, 1<<20))
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	total := uint64(0)
	for _, z := range p {
		total += z.Available
	}
	return total
}

// FilterMaxUsed will filter out any pools that has used percent bigger than max,
// unless all have that, in which case all are preserved.
func (p serverPoolsAvailableSpace) FilterMaxUsed(max int) {
	// We aren't modifying p, only entries in it, so we don't need to receive a pointer.

	})
	for remove > 0 && len(leaves) > 0 {
		// Remove top entry.
		e := leaves[0]
		candidate := e.path
		if candidate == path && !compactSelf {
			// We should be the biggest,
			// if we cannot compact ourself, we are done.
			break
		}
		removing := d.totalChildrenRec(candidate.Key())
		flat := d.sizeRecursive(candidate.Key())
		if flat == nil {
			leaves = leaves[1:]

	// Fill buffers
	b := globalBytePoolCap.Load().Get()
	shardSize := int(e.ShardSize())
	if cap(b) < len(readers)*shardSize {
		// We should always have enough capacity, but older objects may be bigger.
		globalBytePoolCap.Load().Put(b)
		b = nil
	} else {
		// Seed the buffers.
		for i := range bufs {
			bufs[i] = b[i*shardSize : (i+1)*shardSize]
		}
	}

	return &parallelReader{

		disks := make([]StorageAPI, s.setDriveCount)
		copy(disks, s.erasureDisks[setIndex])
		return disks
	}
}

// defaultMonitorConnectEndpointInterval is the interval to monitor endpoint connections.
// Must be bigger than defaultMonitorNewDiskInterval.
const defaultMonitorConnectEndpointInterval = defaultMonitorNewDiskInterval + time.Second*5

// Initialize new set of erasure coded sets.