diff --git a/api/docgen/docgen.go b/api/docgen/docgen.go
index d44239ac0..a15d4623e 100644
--- a/api/docgen/docgen.go
+++ b/api/docgen/docgen.go
@@ -121,7 +121,7 @@ func init() {
 	addExample(api.FullAPIVersion1)
 	addExample(api.PCHInbound)
 	addExample(time.Minute)
-	addExample(graphsync.RequestID(4))
+	addExample(graphsync.NewRequestID())
 	addExample(datatransfer.TransferID(3))
 	addExample(datatransfer.Ongoing)
 	addExample(storeIDExample)
diff --git a/api/types.go b/api/types.go
index c688edf4b..7cb60bdc2 100644
--- a/api/types.go
+++ b/api/types.go
@@ -58,7 +58,7 @@ type MessageSendSpec struct {
 // GraphSyncDataTransfer provides diagnostics on a data transfer happening over graphsync
 type GraphSyncDataTransfer struct {
 	// GraphSync request id for this transfer
-	RequestID graphsync.RequestID
+	RequestID *graphsync.RequestID
 	// Graphsync state for this transfer
 	RequestState string
 	// If a channel ID is present, indicates whether this is the current graphsync request for this channel
diff --git a/build/openrpc/miner.json.gz b/build/openrpc/miner.json.gz
index 8475edc77..2ef745e36 100644
Binary files a/build/openrpc/miner.json.gz and b/build/openrpc/miner.json.gz differ
diff --git a/chain/store/snapshot.go b/chain/store/snapshot.go
index 61fa8bdc8..b9630bcbd 100644
--- a/chain/store/snapshot.go
+++ b/chain/store/snapshot.go
@@ -18,6 +18,10 @@ import (
 	"github.com/filecoin-project/lotus/chain/types"
 )
 
+func (cs *ChainStore) UnionStore() bstore.Blockstore {
+	return bstore.Union(cs.stateBlockstore, cs.chainBlockstore)
+}
+
 func (cs *ChainStore) Export(ctx context.Context, ts *types.TipSet, inclRecentRoots abi.ChainEpoch, skipOldMsgs bool, w io.Writer) error {
 	h := &car.CarHeader{
 		Roots:   ts.Cids(),
@@ -28,7 +32,7 @@ func (cs *ChainStore) Export(ctx context.Context, ts *types.TipSet, inclRecentRo
 		return xerrors.Errorf("failed to write car header: %s", err)
 	}
 
-	unionBs := bstore.Union(cs.stateBlockstore, cs.chainBlockstore)
+	unionBs := cs.UnionStore()
 	return cs.WalkSnapshot(ctx, ts, inclRecentRoots, skipOldMsgs, true, func(c cid.Cid) error {
 		blk, err := unionBs.Get(ctx, c)
 		if err != nil {
diff --git a/cmd/lotus-shed/datastore-vlog.go b/cmd/lotus-shed/datastore-vlog.go
new file mode 100644
index 000000000..7f0c708a5
--- /dev/null
+++ b/cmd/lotus-shed/datastore-vlog.go
@@ -0,0 +1,342 @@
+package main
+
+import (
+	"bufio"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"hash"
+	"hash/crc32"
+	"io"
+	"os"
+	"strings"
+
+	"github.com/dgraph-io/badger/v2/y"
+	block "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-cid"
+	"github.com/multiformats/go-base32"
+	"github.com/urfave/cli/v2"
+	"golang.org/x/xerrors"
+)
+
+var datastoreVlog2CarCmd = &cli.Command{
+	Name:  "vlog2car",
+	Usage: "convert badger blockstore .vlog to .car",
+	Flags: []cli.Flag{
+		&cli.PathFlag{
+			Name:     "vlog",
+			Usage:    "vlog file",
+			Required: true,
+		},
+		&cli.PathFlag{
+			Name:     "car",
+			Usage:    "out car file name (no .car)",
+			Required: true,
+		},
+		&cli.StringFlag{
+			Name:  "key-prefix",
+			Usage: "datastore prefix",
+			Value: "/blocks/",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		ctx := cctx.Context
+
+		maxSz := uint64(1 << 20)
+
+		carb := &rawCarb{
+			max:    maxSz,
+			blocks: map[cid.Cid]block.Block{},
+		}
+		cars := 0
+
+		pref := cctx.String("key-prefix")
+		plen := len(pref)
+
+		{
+			// NOTE: Some bits of code in this code block come from https://github.com/dgraph-io/badger, which is licensed
+			//  under Apache 2.0; See https://github.com/dgraph-io/badger/blob/master/LICENSE
+
+			vf, err := os.Open(cctx.Path("vlog"))
+			if err != nil {
+				return xerrors.Errorf("open vlog file: %w", err)
+			}
+
+			if _, err := vf.Seek(20, io.SeekStart); err != nil {
+				return xerrors.Errorf("seek past vlog start: %w", err)
+			}
+
+			reader := bufio.NewReader(vf)
+			read := &safeRead{
+				k:            make([]byte, 10),
+				v:            make([]byte, 10),
+				recordOffset: 20,
+			}
+
+		loop:
+			for {
+				e, err := read.Entry(reader)
+				switch {
+				case err == io.EOF:
+					break loop
+				case err == io.ErrUnexpectedEOF || err == errTruncate:
+					break loop
+				case err != nil:
+					return xerrors.Errorf("entry read error: %w", err)
+				case e == nil:
+					continue
+				}
+
+				if e.meta&0x40 > 0 {
+					e.Key = e.Key[:len(e.Key)-8]
+				} else if e.meta > 0 {
+					if e.meta&0x3f > 0 {
+						log.Infof("unk meta m:%x; k:%x, v:%60x", e.meta, e.Key, e.Value)
+					}
+					continue
+				}
+
+				{
+					if plen > 0 && !strings.HasPrefix(string(e.Key), pref) {
+						log.Infow("no blocks prefix", "key", string(e.Key))
+						continue
+					}
+
+					h, err := base32.RawStdEncoding.DecodeString(string(e.Key[plen:]))
+					if err != nil {
+						return xerrors.Errorf("decode b32 ds key %x: %w", e.Key, err)
+					}
+
+					c := cid.NewCidV1(cid.Raw, h)
+
+					b, err := block.NewBlockWithCid(e.Value, c)
+					if err != nil {
+						return xerrors.Errorf("readblk: %w", err)
+					}
+
+					err = carb.consume(c, b)
+					switch err {
+					case nil:
+					case errFullCar:
+						root, err := carb.finalize()
+						if err != nil {
+							return xerrors.Errorf("carb finalize: %w", err)
+						}
+
+						if err := carb.writeCar(ctx, fmt.Sprintf("%s%d.car", cctx.Path("car"), cars), root); err != nil {
+							return xerrors.Errorf("writeCar: %w", err)
+						}
+
+						cars++
+
+						carb = &rawCarb{
+							max:    maxSz,
+							blocks: map[cid.Cid]block.Block{},
+						}
+
+					default:
+						return xerrors.Errorf("carb consume: %w", err)
+					}
+				}
+			}
+
+			if err := vf.Close(); err != nil {
+				return err
+			}
+		}
+
+		root, err := carb.finalize()
+		if err != nil {
+			return xerrors.Errorf("carb finalize: %w", err)
+		}
+
+		if err := carb.writeCar(ctx, fmt.Sprintf("%s%d.car", cctx.Path("car"), cars), root); err != nil {
+			return xerrors.Errorf("writeCar: %w", err)
+		}
+
+		return nil
+
+	},
+}
+
+// NOTE: Code below comes (with slight modifications) from https://github.com/dgraph-io/badger/blob/master/value.go
+// Apache 2.0; See https://github.com/dgraph-io/badger/blob/master/LICENSE
+
+var errTruncate = errors.New("do truncate")
+
+// hashReader implements io.Reader, io.ByteReader interfaces. It also keeps track of the number
+// bytes read. The hashReader writes to h (hash) what it reads from r.
+type hashReader struct {
+	r         io.Reader
+	h         hash.Hash32
+	bytesRead int // Number of bytes read.
+}
+
+func newHashReader(r io.Reader) *hashReader {
+	hash := crc32.New(y.CastagnoliCrcTable)
+	return &hashReader{
+		r: r,
+		h: hash,
+	}
+}
+
+// Read reads len(p) bytes from the reader. Returns the number of bytes read, error on failure.
+func (t *hashReader) Read(p []byte) (int, error) {
+	n, err := t.r.Read(p)
+	if err != nil {
+		return n, err
+	}
+	t.bytesRead += n
+	return t.h.Write(p[:n])
+}
+
+// ReadByte reads exactly one byte from the reader. Returns error on failure.
+func (t *hashReader) ReadByte() (byte, error) {
+	b := make([]byte, 1)
+	_, err := t.Read(b)
+	return b[0], err
+}
+
+// Sum32 returns the sum32 of the underlying hash.
+func (t *hashReader) Sum32() uint32 {
+	return t.h.Sum32()
+}
+
+type safeRead struct {
+	k []byte
+	v []byte
+
+	recordOffset uint32
+}
+
+// Entry provides Key, Value, UserMeta and ExpiresAt. This struct can be used by
+// the user to set data.
+type Entry struct {
+	Key       []byte
+	Value     []byte
+	UserMeta  byte
+	ExpiresAt uint64 // time.Unix
+	meta      byte
+
+	// Fields maintained internally.
+	offset uint32
+	hlen   int // Length of the header.
+}
+
+// Entry reads an entry from the provided reader. It also validates the checksum for every entry
+// read. Returns error on failure.
+func (r *safeRead) Entry(reader io.Reader) (*Entry, error) {
+	tee := newHashReader(reader)
+	var h header
+	hlen, err := h.DecodeFrom(tee)
+	if err != nil {
+		return nil, err
+	}
+	if h.klen > uint32(1<<16) { // Key length must be below uint16.
+		return nil, errTruncate
+	}
+	kl := int(h.klen)
+	if cap(r.k) < kl {
+		r.k = make([]byte, 2*kl)
+	}
+	vl := int(h.vlen)
+	if cap(r.v) < vl {
+		r.v = make([]byte, 2*vl)
+	}
+
+	e := &Entry{}
+	e.offset = r.recordOffset
+	e.hlen = hlen
+	buf := make([]byte, h.klen+h.vlen)
+	if _, err := io.ReadFull(tee, buf[:]); err != nil {
+		if err == io.EOF {
+			err = errTruncate
+		}
+		return nil, err
+	}
+	e.Key = buf[:h.klen]
+	e.Value = buf[h.klen:]
+	var crcBuf [crc32.Size]byte
+	if _, err := io.ReadFull(reader, crcBuf[:]); err != nil {
+		if err == io.EOF {
+			err = errTruncate
+		}
+		return nil, err
+	}
+	crc := y.BytesToU32(crcBuf[:])
+	if crc != tee.Sum32() {
+		return nil, errTruncate
+	}
+	e.meta = h.meta
+	e.UserMeta = h.userMeta
+	e.ExpiresAt = h.expiresAt
+	return e, nil
+}
+
+// header is used in value log as a header before Entry.
+type header struct {
+	klen      uint32
+	vlen      uint32
+	expiresAt uint64
+	meta      byte
+	userMeta  byte
+}
+
+// Encode encodes the header into []byte. The provided []byte should be atleast 5 bytes. The
+// function will panic if out []byte isn't large enough to hold all the values.
+// The encoded header looks like
+// +------+----------+------------+--------------+-----------+
+// | Meta | UserMeta | Key Length | Value Length | ExpiresAt |
+// +------+----------+------------+--------------+-----------+
+func (h header) Encode(out []byte) int {
+	out[0], out[1] = h.meta, h.userMeta
+	index := 2
+	index += binary.PutUvarint(out[index:], uint64(h.klen))
+	index += binary.PutUvarint(out[index:], uint64(h.vlen))
+	index += binary.PutUvarint(out[index:], h.expiresAt)
+	return index
+}
+
+// Decode decodes the given header from the provided byte slice.
+// Returns the number of bytes read.
+func (h *header) Decode(buf []byte) int {
+	h.meta, h.userMeta = buf[0], buf[1]
+	index := 2
+	klen, count := binary.Uvarint(buf[index:])
+	h.klen = uint32(klen)
+	index += count
+	vlen, count := binary.Uvarint(buf[index:])
+	h.vlen = uint32(vlen)
+	index += count
+	h.expiresAt, count = binary.Uvarint(buf[index:])
+	return index + count
+}
+
+// DecodeFrom reads the header from the hashReader.
+// Returns the number of bytes read.
+func (h *header) DecodeFrom(reader *hashReader) (int, error) {
+	var err error
+	h.meta, err = reader.ReadByte()
+	if err != nil {
+		return 0, err
+	}
+	h.userMeta, err = reader.ReadByte()
+	if err != nil {
+		return 0, err
+	}
+	klen, err := binary.ReadUvarint(reader)
+	if err != nil {
+		return 0, err
+	}
+	h.klen = uint32(klen)
+	vlen, err := binary.ReadUvarint(reader)
+	if err != nil {
+		return 0, err
+	}
+	h.vlen = uint32(vlen)
+	h.expiresAt, err = binary.ReadUvarint(reader)
+	if err != nil {
+		return 0, err
+	}
+	return reader.bytesRead, nil
+}
diff --git a/cmd/lotus-shed/datastore.go b/cmd/lotus-shed/datastore.go
index ff740a772..698e63324 100644
--- a/cmd/lotus-shed/datastore.go
+++ b/cmd/lotus-shed/datastore.go
@@ -32,6 +32,7 @@ var datastoreCmd = &cli.Command{
 		datastoreListCmd,
 		datastoreGetCmd,
 		datastoreRewriteCmd,
+		datastoreVlog2CarCmd,
 	},
 }
 
diff --git a/cmd/lotus-shed/export.go b/cmd/lotus-shed/export.go
index 3851e4922..fec4d575a 100644
--- a/cmd/lotus-shed/export.go
+++ b/cmd/lotus-shed/export.go
@@ -1,19 +1,38 @@
 package main
 
 import (
+	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
 
+	"github.com/dgraph-io/badger/v2"
+	"github.com/dgraph-io/badger/v2/pb"
+	"github.com/dustin/go-humanize"
+	"github.com/filecoin-project/go-state-types/abi"
+	block "github.com/ipfs/go-block-format"
+	"github.com/ipfs/go-blockservice"
+	"github.com/ipfs/go-cid"
+	offline "github.com/ipfs/go-ipfs-exchange-offline"
+	"github.com/ipfs/go-merkledag"
+	"github.com/ipld/go-car"
+	"github.com/multiformats/go-base32"
+	mh "github.com/multiformats/go-multihash"
 	"github.com/urfave/cli/v2"
+	"go.uber.org/zap"
 	"golang.org/x/xerrors"
 
-	"github.com/filecoin-project/go-state-types/abi"
-
+	"github.com/filecoin-project/lotus/blockstore"
 	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
 	lcli "github.com/filecoin-project/lotus/cli"
+	"github.com/filecoin-project/lotus/cmd/lotus-shed/shedgen"
 	"github.com/filecoin-project/lotus/node/repo"
 )
 
@@ -39,6 +58,9 @@ var exportChainCmd = &cli.Command{
 			Name: "skip-old-msgs",
 		},
 	},
+	Subcommands: []*cli.Command{
+		exportRawCmd,
+	},
 	Action: func(cctx *cli.Context) error {
 		if !cctx.Args().Present() {
 			return lcli.ShowHelp(cctx, fmt.Errorf("must specify file name to write export to"))
@@ -130,3 +152,351 @@ var exportChainCmd = &cli.Command{
 		return nil
 	},
 }
+
+var exportRawCmd = &cli.Command{
+	Name:        "raw",
+	Description: "Export raw blocks from repo (requires node to be offline)",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "repo",
+			Value: "~/.lotus",
+		},
+		&cli.StringFlag{
+			Name:  "car-size",
+			Value: "50M",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		if !cctx.Args().Present() {
+			return lcli.ShowHelp(cctx, fmt.Errorf("must specify file name to write export to"))
+		}
+
+		ctx := context.TODO()
+
+		r, err := repo.NewFS(cctx.String("repo"))
+		if err != nil {
+			return xerrors.Errorf("opening fs repo: %w", err)
+		}
+
+		exists, err := r.Exists()
+		if err != nil {
+			return err
+		}
+		if !exists {
+			return xerrors.Errorf("lotus repo doesn't exist")
+		}
+
+		lr, err := r.LockRO(repo.FullNode)
+		if err != nil {
+			return err
+		}
+		defer lr.Close() //nolint:errcheck
+
+		out := cctx.Args().First()
+		err = os.Mkdir(out, 0755)
+		if err != nil {
+			return xerrors.Errorf("creating output dir: %w", err)
+		}
+
+		maxSz, err := humanize.ParseBytes(cctx.String("car-size"))
+		if err != nil {
+			return xerrors.Errorf("parse --car-size: %w", err)
+		}
+
+		cars := 0
+
+		carb := &rawCarb{
+			max:    maxSz,
+			blocks: map[cid.Cid]block.Block{},
+		}
+
+		{
+			consume := func(c cid.Cid, b block.Block) error {
+				err = carb.consume(c, b)
+				switch err {
+				case nil:
+				case errFullCar:
+					root, err := carb.finalize()
+					if err != nil {
+						return xerrors.Errorf("carb finalize: %w", err)
+					}
+
+					if err := carb.writeCar(ctx, filepath.Join(out, fmt.Sprintf("chain%d.car", cars)), root); err != nil {
+						return xerrors.Errorf("writeCar: %w", err)
+					}
+
+					cars++
+
+					if cars > 10 {
+						return xerrors.Errorf("enough")
+					}
+
+					carb = &rawCarb{
+						max:    maxSz,
+						blocks: map[cid.Cid]block.Block{},
+					}
+
+					log.Infow("gc")
+					go runtime.GC()
+
+				default:
+					return xerrors.Errorf("carb consume: %w", err)
+				}
+				return nil
+			}
+
+			{
+				path := filepath.Join(lr.Path(), "datastore", "chain")
+				opts, err := repo.BadgerBlockstoreOptions(repo.UniversalBlockstore, path, false)
+				if err != nil {
+					return err
+				}
+
+				opts.Logger = &badgerLog{
+					SugaredLogger: log.Desugar().WithOptions(zap.AddCallerSkip(1)).Sugar(),
+					skip2:         log.Desugar().WithOptions(zap.AddCallerSkip(2)).Sugar(),
+				}
+
+				log.Infow("open db")
+
+				db, err := badger.Open(opts.Options)
+				if err != nil {
+					return fmt.Errorf("failed to open badger blockstore: %w", err)
+				}
+				defer db.Close() // nolint:errcheck
+
+				log.Infow("new stream")
+
+				var wlk sync.Mutex
+
+				str := db.NewStream()
+				str.NumGo = 16
+				str.LogPrefix = "bstream"
+				str.Send = func(list *pb.KVList) (err error) {
+					defer func() {
+						if err != nil {
+							log.Errorw("send error", "err", err)
+						}
+					}()
+
+					for _, kv := range list.Kv {
+						if kv.Key == nil || kv.Value == nil {
+							continue
+						}
+						if !strings.HasPrefix(string(kv.Key), "/blocks/") {
+							log.Infow("no blocks prefix", "key", string(kv.Key))
+							continue
+						}
+
+						h, err := base32.RawStdEncoding.DecodeString(string(kv.Key[len("/blocks/"):]))
+						if err != nil {
+							return xerrors.Errorf("decode b32 ds key %x: %w", kv.Key, err)
+						}
+
+						c := cid.NewCidV1(cid.Raw, h)
+
+						b, err := block.NewBlockWithCid(kv.Value, c)
+						if err != nil {
+							return xerrors.Errorf("readblk: %w", err)
+						}
+
+						wlk.Lock()
+						err = consume(c, b)
+						wlk.Unlock()
+						if err != nil {
+							return xerrors.Errorf("consume stream block: %w", err)
+						}
+					}
+
+					return nil
+				}
+
+				if err := str.Orchestrate(ctx); err != nil {
+					return xerrors.Errorf("orchestrate stream: %w", err)
+				}
+			}
+		}
+
+		log.Infow("write last")
+
+		root, err := carb.finalize()
+		if err != nil {
+			return xerrors.Errorf("carb finalize: %w", err)
+		}
+
+		if err := carb.writeCar(ctx, filepath.Join(out, fmt.Sprintf("chain%d.car", cars)), root); err != nil {
+			return xerrors.Errorf("writeCar: %w", err)
+		}
+
+		return nil
+	},
+}
+
+var errFullCar = errors.New("full")
+
+const maxlinks = 16
+
+type rawCarb struct {
+	blockstore.Blockstore
+
+	max, cur uint64
+
+	nodes []*shedgen.CarbNode
+
+	blocks map[cid.Cid]block.Block
+}
+
+func (rc *rawCarb) Has(ctx context.Context, c cid.Cid) (bool, error) {
+	_, has := rc.blocks[c]
+	return has, nil
+}
+
+func (rc *rawCarb) Get(ctx context.Context, c cid.Cid) (block.Block, error) {
+	b, has := rc.blocks[c]
+	if !has {
+		return nil, blockstore.ErrNotFound
+	}
+	return b, nil
+}
+
+func (rc *rawCarb) GetSize(ctx context.Context, c cid.Cid) (int, error) {
+	b, has := rc.blocks[c]
+	if !has {
+		return 0, blockstore.ErrNotFound
+	}
+	return len(b.RawData()), nil
+}
+
+func (rc *rawCarb) checkNodes(maxl int) error {
+	if len(rc.nodes) == 0 {
+		log.Infow("add level", "l", 0)
+		rc.nodes = append(rc.nodes, new(shedgen.CarbNode))
+	}
+	for i := 0; i < len(rc.nodes); i++ {
+		if len(rc.nodes[i].Sub) <= maxl {
+			break
+		}
+		if len(rc.nodes) <= i+1 {
+			log.Infow("add level", "l", i+1)
+			rc.nodes = append(rc.nodes, new(shedgen.CarbNode))
+		}
+
+		var bb bytes.Buffer
+		if err := rc.nodes[i].MarshalCBOR(&bb); err != nil {
+			return err
+		}
+		c, err := cid.Prefix{
+			Version:  1,
+			Codec:    cid.DagCBOR,
+			MhType:   mh.SHA2_256,
+			MhLength: -1,
+		}.Sum(bb.Bytes())
+		if err != nil {
+			return xerrors.Errorf("gen cid: %w", err)
+		}
+
+		b, err := block.NewBlockWithCid(bb.Bytes(), c)
+		if err != nil {
+			return xerrors.Errorf("new block: %w", err)
+		}
+
+		if i > 1 {
+			log.Infow("compact", "from", i, "to", i+1, "sub", c.String())
+		}
+
+		rc.nodes[i+1].Sub = append(rc.nodes[i+1].Sub, c)
+		rc.blocks[c] = b
+		rc.nodes[i] = new(shedgen.CarbNode)
+		rc.cur += uint64(bb.Len())
+	}
+
+	return nil
+}
+
+func (rc *rawCarb) consume(c cid.Cid, b block.Block) error {
+	if err := rc.checkNodes(maxlinks); err != nil {
+		return err
+	}
+	if rc.cur+uint64(len(b.RawData())) > rc.max {
+		return errFullCar
+	}
+
+	rc.cur += uint64(len(b.RawData()))
+
+	b, err := block.NewBlockWithCid(b.RawData(), c)
+	if err != nil {
+		return xerrors.Errorf("create raw block: %w", err)
+	}
+
+	rc.blocks[c] = b
+	rc.nodes[0].Sub = append(rc.nodes[0].Sub, c)
+
+	return nil
+}
+
+func (rc *rawCarb) finalize() (cid.Cid, error) {
+	if len(rc.nodes) == 0 {
+		rc.nodes = append(rc.nodes, new(shedgen.CarbNode))
+	}
+
+	for i := 0; i < len(rc.nodes); i++ {
+		var bb bytes.Buffer
+		if err := rc.nodes[i].MarshalCBOR(&bb); err != nil {
+			return cid.Undef, err
+		}
+		c, err := cid.Prefix{
+			Version:  1,
+			Codec:    cid.DagCBOR,
+			MhType:   mh.SHA2_256,
+			MhLength: -1,
+		}.Sum(bb.Bytes())
+		if err != nil {
+			return cid.Undef, xerrors.Errorf("gen cid: %w", err)
+		}
+
+		b, err := block.NewBlockWithCid(bb.Bytes(), c)
+		if err != nil {
+			return cid.Undef, xerrors.Errorf("new block: %w", err)
+		}
+
+		log.Infow("fin", "level", i, "cid", c.String())
+
+		rc.blocks[c] = b
+		rc.nodes[i] = new(shedgen.CarbNode)
+		rc.cur += uint64(bb.Len())
+
+		if len(rc.nodes[i].Sub) <= 1 && i == len(rc.nodes)-1 {
+			return c, err
+		}
+		if len(rc.nodes) <= i+1 {
+			rc.nodes = append(rc.nodes, new(shedgen.CarbNode))
+		}
+		rc.nodes[i+1].Sub = append(rc.nodes[i+1].Sub, c)
+	}
+	return cid.Undef, xerrors.Errorf("failed to finalize")
+}
+
+func (rc *rawCarb) writeCar(ctx context.Context, path string, root cid.Cid) error {
+	f, err := os.Create(path)
+	if err != nil {
+		return xerrors.Errorf("create out car: %w", err)
+	}
+
+	bs := rc
+	ds := merkledag.NewDAGService(blockservice.New(bs, offline.Exchange(bs)))
+
+	log.Infow("write car", "path", path, "root", root.String(), "blocks", len(rc.blocks))
+
+	return car.WriteCar(ctx, ds, []cid.Cid{root}, f)
+}
+
+var _ blockstore.Blockstore = &rawCarb{}
+
+type badgerLog struct {
+	*zap.SugaredLogger
+	skip2 *zap.SugaredLogger
+}
+
+func (b *badgerLog) Warningf(format string, args ...interface{}) {
+	b.skip2.Warnf(format, args...)
+}
diff --git a/cmd/lotus-shed/itestd.go b/cmd/lotus-shed/itestd.go
new file mode 100644
index 000000000..3ac542d27
--- /dev/null
+++ b/cmd/lotus-shed/itestd.go
@@ -0,0 +1,104 @@
+package main
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"os/exec"
+
+	"github.com/chzyer/readline"
+	"github.com/urfave/cli/v2"
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/lotus/itests/kit"
+)
+
+var itestdCmd = &cli.Command{
+	Name:        "itestd",
+	Description: "Integration test debug env",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "listen",
+			Value: "127.0.0.1:5674",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		var nodes []kit.ItestdNotif
+
+		m := http.NewServeMux()
+		m.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+			var notif kit.ItestdNotif
+			if err := json.NewDecoder(r.Body).Decode(&notif); err != nil {
+				fmt.Printf("!! Decode itest notif: %s\n", err)
+				return
+			}
+
+			fmt.Printf("%d @%s '%s=%s'\n", len(nodes), notif.TestName, notif.NodeType, notif.Api)
+			nodes = append(nodes, notif)
+		})
+		l, err := net.Listen("tcp", cctx.String("listen"))
+		if err != nil {
+			return xerrors.Errorf("net listen: %w", err)
+		}
+		s := &httptest.Server{
+			Listener: l,
+			Config:   &http.Server{Handler: m},
+		}
+		s.Start()
+		fmt.Printf("ITest env:\n\nLOTUS_ITESTD=%s\n\nSay 'sh' to spawn a shell connected to test nodes\n--- waiting for clients\n", s.URL)
+
+		cs := readline.NewCancelableStdin(os.Stdin)
+		go func() {
+			<-cctx.Done()
+			cs.Close() // nolint:errcheck
+		}()
+
+		rl := bufio.NewReader(cs)
+
+		for {
+			cmd, _, err := rl.ReadLine()
+			if err != nil {
+				return xerrors.Errorf("readline: %w", err)
+			}
+
+			switch string(cmd) {
+			case "sh":
+				shell := "/bin/sh"
+				if os.Getenv("SHELL") != "" {
+					shell = os.Getenv("SHELL")
+				}
+
+				p := exec.Command(shell, "-i")
+				p.Env = append(p.Env, os.Environ()...)
+				lastNodes := map[string]string{}
+				for _, node := range nodes {
+					lastNodes[node.NodeType] = node.Api
+				}
+				if _, found := lastNodes["MARKETS_API_INFO"]; !found {
+					lastNodes["MARKETS_API_INFO"] = lastNodes["MINER_API_INFO"]
+				}
+				for typ, api := range lastNodes {
+					p.Env = append(p.Env, fmt.Sprintf("%s=%s", typ, api))
+				}
+
+				p.Stdout = os.Stdout
+				p.Stderr = os.Stderr
+				p.Stdin = os.Stdin
+				if err := p.Start(); err != nil {
+					return xerrors.Errorf("start shell: %w", err)
+				}
+				if err := p.Wait(); err != nil {
+					fmt.Printf("wait for shell: %s\n", err)
+				}
+				fmt.Println("\n--- shell quit")
+
+			default:
+				fmt.Println("!! Unknown command")
+			}
+		}
+	},
+}
diff --git a/cmd/lotus-shed/main.go b/cmd/lotus-shed/main.go
index 45fd24e18..c1facfe7b 100644
--- a/cmd/lotus-shed/main.go
+++ b/cmd/lotus-shed/main.go
@@ -69,6 +69,7 @@ func main() {
 		terminationsCmd,
 		migrationsCmd,
 		diffCmd,
+		itestdCmd,
 	}
 
 	app := &cli.App{
diff --git a/cmd/lotus-shed/shedgen/cbor_gen.go b/cmd/lotus-shed/shedgen/cbor_gen.go
new file mode 100644
index 000000000..37ed95539
--- /dev/null
+++ b/cmd/lotus-shed/shedgen/cbor_gen.go
@@ -0,0 +1,128 @@
+// Code generated by github.com/whyrusleeping/cbor-gen. DO NOT EDIT.
+
+package shedgen
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"sort"
+
+	cid "github.com/ipfs/go-cid"
+	cbg "github.com/whyrusleeping/cbor-gen"
+	xerrors "golang.org/x/xerrors"
+)
+
+var _ = xerrors.Errorf
+var _ = cid.Undef
+var _ = math.E
+var _ = sort.Sort
+
+func (t *CarbNode) MarshalCBOR(w io.Writer) error {
+	if t == nil {
+		_, err := w.Write(cbg.CborNull)
+		return err
+	}
+	if _, err := w.Write([]byte{161}); err != nil {
+		return err
+	}
+
+	scratch := make([]byte, 9)
+
+	// t.Sub ([]cid.Cid) (slice)
+	if len("Sub") > cbg.MaxLength {
+		return xerrors.Errorf("Value in field \"Sub\" was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajTextString, uint64(len("Sub"))); err != nil {
+		return err
+	}
+	if _, err := io.WriteString(w, string("Sub")); err != nil {
+		return err
+	}
+
+	if len(t.Sub) > cbg.MaxLength {
+		return xerrors.Errorf("Slice value in field t.Sub was too long")
+	}
+
+	if err := cbg.WriteMajorTypeHeaderBuf(scratch, w, cbg.MajArray, uint64(len(t.Sub))); err != nil {
+		return err
+	}
+	for _, v := range t.Sub {
+		if err := cbg.WriteCidBuf(scratch, w, v); err != nil {
+			return xerrors.Errorf("failed writing cid field t.Sub: %w", err)
+		}
+	}
+	return nil
+}
+
+func (t *CarbNode) UnmarshalCBOR(r io.Reader) error {
+	*t = CarbNode{}
+
+	br := cbg.GetPeeker(r)
+	scratch := make([]byte, 8)
+
+	maj, extra, err := cbg.CborReadHeaderBuf(br, scratch)
+	if err != nil {
+		return err
+	}
+	if maj != cbg.MajMap {
+		return fmt.Errorf("cbor input should be of type map")
+	}
+
+	if extra > cbg.MaxLength {
+		return fmt.Errorf("CarbNode: map struct too large (%d)", extra)
+	}
+
+	var name string
+	n := extra
+
+	for i := uint64(0); i < n; i++ {
+
+		{
+			sval, err := cbg.ReadStringBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			name = string(sval)
+		}
+
+		switch name {
+		// t.Sub ([]cid.Cid) (slice)
+		case "Sub":
+
+			maj, extra, err = cbg.CborReadHeaderBuf(br, scratch)
+			if err != nil {
+				return err
+			}
+
+			if extra > cbg.MaxLength {
+				return fmt.Errorf("t.Sub: array too large (%d)", extra)
+			}
+
+			if maj != cbg.MajArray {
+				return fmt.Errorf("expected cbor array")
+			}
+
+			if extra > 0 {
+				t.Sub = make([]cid.Cid, extra)
+			}
+
+			for i := 0; i < int(extra); i++ {
+
+				c, err := cbg.ReadCid(br)
+				if err != nil {
+					return xerrors.Errorf("reading cid field t.Sub failed: %w", err)
+				}
+				t.Sub[i] = c
+			}
+
+		default:
+			// Field doesn't exist on this type, so ignore it
+			cbg.ScanForLinks(r, func(cid.Cid) {})
+		}
+	}
+
+	return nil
+}
diff --git a/cmd/lotus-shed/shedgen/rawexport.go b/cmd/lotus-shed/shedgen/rawexport.go
new file mode 100644
index 000000000..ca430c5e6
--- /dev/null
+++ b/cmd/lotus-shed/shedgen/rawexport.go
@@ -0,0 +1,7 @@
+package shedgen
+
+import "github.com/ipfs/go-cid"
+
+type CarbNode struct {
+	Sub []cid.Cid
+}
diff --git a/documentation/en/api-v0-methods-miner.md b/documentation/en/api-v0-methods-miner.md
index c8294feb5..f8297abed 100644
--- a/documentation/en/api-v0-methods-miner.md
+++ b/documentation/en/api-v0-methods-miner.md
@@ -939,7 +939,7 @@ Response:
 {
   "ReceivingTransfers": [
     {
-      "RequestID": 4,
+      "RequestID": {},
       "RequestState": "string value",
       "IsCurrentChannelRequest": true,
       "ChannelID": {
@@ -983,7 +983,7 @@ Response:
   ],
   "SendingTransfers": [
     {
-      "RequestID": 4,
+      "RequestID": {},
       "RequestState": "string value",
       "IsCurrentChannelRequest": true,
       "ChannelID": {
diff --git a/documentation/en/default-lotus-config.toml b/documentation/en/default-lotus-config.toml
index ad917814b..1c9caf3a0 100644
--- a/documentation/en/default-lotus-config.toml
+++ b/documentation/en/default-lotus-config.toml
@@ -23,6 +23,12 @@
   #DisableMetadataLog = false
 
 
+[Logging]
+  [Logging.SubsystemLevels]
+    # env var: LOTUS_LOGGING_SUBSYSTEMLEVELS_EXAMPLE-SUBSYSTEM
+    #example-subsystem = "INFO"
+
+
 [Libp2p]
   # Binding address for the libp2p host - 0 means random port.
   # Format: multiaddress; see https://multiformats.io/multiaddr/
diff --git a/documentation/en/default-lotus-miner-config.toml b/documentation/en/default-lotus-miner-config.toml
index 00370a9cc..a6a36f742 100644
--- a/documentation/en/default-lotus-miner-config.toml
+++ b/documentation/en/default-lotus-miner-config.toml
@@ -23,6 +23,12 @@
   #DisableMetadataLog = false
 
 
+[Logging]
+  [Logging.SubsystemLevels]
+    # env var: LOTUS_LOGGING_SUBSYSTEMLEVELS_EXAMPLE-SUBSYSTEM
+    #example-subsystem = "INFO"
+
+
 [Libp2p]
   # Binding address for the libp2p host - 0 means random port.
   # Format: multiaddress; see https://multiformats.io/multiaddr/
diff --git a/extern/sector-storage/mock/mock.go b/extern/sector-storage/mock/mock.go
index c32b815e7..a17bd73ad 100644
--- a/extern/sector-storage/mock/mock.go
+++ b/extern/sector-storage/mock/mock.go
@@ -434,11 +434,19 @@ func (mgr *SectorMgr) GenerateWindowPoStWithVanilla(ctx context.Context, proofTy
 }
 
 func (mgr *SectorMgr) ReadPiece(ctx context.Context, sector storage.SectorRef, offset storiface.UnpaddedByteIndex, size abi.UnpaddedPieceSize, ticket abi.SealRandomness, unsealed cid.Cid) (mount.Reader, bool, error) {
-	if uint64(offset) != 0 {
-		panic("implme")
+	off := storiface.UnpaddedByteIndex(0)
+	var piece cid.Cid
+	for _, c := range mgr.sectors[sector.ID].pieces {
+		piece = c
+		if off >= offset {
+			break
+		}
+		off += storiface.UnpaddedByteIndex(len(mgr.pieces[piece]))
 	}
-
-	br := bytes.NewReader(mgr.pieces[mgr.sectors[sector.ID].pieces[0]][:size])
+	if off > offset {
+		panic("non-aligned offset todo")
+	}
+	br := bytes.NewReader(mgr.pieces[piece][:size])
 
 	return struct {
 		io.ReadCloser
diff --git a/extern/sector-storage/piece_provider.go b/extern/sector-storage/piece_provider.go
index 4622289e8..72e09df06 100644
--- a/extern/sector-storage/piece_provider.go
+++ b/extern/sector-storage/piece_provider.go
@@ -166,7 +166,7 @@ func (p *pieceProvider) ReadPiece(ctx context.Context, sector storage.SectorRef,
 
 	r, err := p.tryReadUnsealedPiece(ctx, unsealed, sector, pieceOffset, size)
 
-	log.Debugf("result of first tryReadUnsealedPiece: r=%+v, err=%s", r, err)
+	log.Debugf("result of first tryReadUnsealedPiece: r=%s, err=%s", r, err)
 
 	if xerrors.Is(err, storiface.ErrSectorNotFound) {
 		log.Debugf("no unsealed sector file with unsealed piece, sector=%+v, pieceOffset=%d, size=%d", sector, pieceOffset, size)
diff --git a/extern/storage-sealing/input.go b/extern/storage-sealing/input.go
index c999badfd..e644cd848 100644
--- a/extern/storage-sealing/input.go
+++ b/extern/storage-sealing/input.go
@@ -315,25 +315,21 @@ func (m *Sealing) SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPiec
 		m.inputLk.Unlock()
 
 		// we already have a pre-existing add piece call for this deal, let's wait for it to finish and see if it's successful
-		for {
-			res, err := waitAddPieceResp(ctx, pp)
-			if err != nil {
-				return api.SectorOffset{}, err
-			}
-			//  there was an error waiting for a pre-existing add piece call, let's retry
-			if res.err != nil {
-				m.inputLk.Lock()
-				pp = m.addPendingPiece(ctx, size, data, deal, sp)
-				m.inputLk.Unlock()
-				continue
-			}
+		res, err := waitAddPieceResp(ctx, pp)
+		if err != nil {
+			return api.SectorOffset{}, err
+		}
+		if res.err == nil {
 			// all good, return the response
 			return api.SectorOffset{Sector: res.sn, Offset: res.offset.Padded()}, res.err
 		}
+		// if there was an error waiting for a pre-existing add piece call, let's retry
+		m.inputLk.Lock()
 	}
 
+	// addPendingPiece takes over m.inputLk
 	pp := m.addPendingPiece(ctx, size, data, deal, sp)
-	m.inputLk.Unlock()
+
 	res, err := waitAddPieceResp(ctx, pp)
 	if err != nil {
 		return api.SectorOffset{}, err
@@ -341,6 +337,7 @@ func (m *Sealing) SectorAddPieceToAny(ctx context.Context, size abi.UnpaddedPiec
 	return api.SectorOffset{Sector: res.sn, Offset: res.offset.Padded()}, res.err
 }
 
+// called with m.inputLk; transfers the lock to another goroutine!
 func (m *Sealing) addPendingPiece(ctx context.Context, size abi.UnpaddedPieceSize, data storage.Data, deal api.PieceDealInfo, sp abi.RegisteredSealProof) *pendingPiece {
 	doneCh := make(chan struct{})
 	pp := &pendingPiece{
@@ -357,6 +354,7 @@ func (m *Sealing) addPendingPiece(ctx context.Context, size abi.UnpaddedPieceSiz
 
 	m.pendingPieces[proposalCID(deal)] = pp
 	go func() {
+		defer m.inputLk.Unlock()
 		if err := m.updateInput(ctx, sp); err != nil {
 			log.Errorf("%+v", err)
 		}
diff --git a/gen/main.go b/gen/main.go
index 0018b241d..f7b96c537 100644
--- a/gen/main.go
+++ b/gen/main.go
@@ -10,6 +10,7 @@ import (
 	"github.com/filecoin-project/lotus/chain/exchange"
 	"github.com/filecoin-project/lotus/chain/market"
 	"github.com/filecoin-project/lotus/chain/types"
+	"github.com/filecoin-project/lotus/cmd/lotus-shed/shedgen"
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
 	"github.com/filecoin-project/lotus/node/hello"
@@ -106,4 +107,11 @@ func main() {
 		fmt.Println(err)
 		os.Exit(1)
 	}
+	err = gen.WriteMapEncodersToFile("./cmd/lotus-shed/shedgen/cbor_gen.go", "shedgen",
+		shedgen.CarbNode{},
+	)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
 }
diff --git a/go.mod b/go.mod
index c59a9b384..b30599e3b 100644
--- a/go.mod
+++ b/go.mod
@@ -35,7 +35,7 @@ require (
 	github.com/filecoin-project/go-cbor-util v0.0.1
 	github.com/filecoin-project/go-commp-utils v0.1.3
 	github.com/filecoin-project/go-crypto v0.0.1
-	github.com/filecoin-project/go-data-transfer v1.14.0
+	github.com/filecoin-project/go-data-transfer v1.15.0
 	github.com/filecoin-project/go-fil-commcid v0.1.0
 	github.com/filecoin-project/go-fil-commp-hashhash v0.1.0
 	github.com/filecoin-project/go-fil-markets v1.20.1
@@ -82,7 +82,7 @@ require (
 	github.com/ipfs/go-ds-leveldb v0.5.0
 	github.com/ipfs/go-ds-measure v0.2.0
 	github.com/ipfs/go-fs-lock v0.0.7
-	github.com/ipfs/go-graphsync v0.12.0
+	github.com/ipfs/go-graphsync v0.13.0
 	github.com/ipfs/go-ipfs-blockstore v1.1.2
 	github.com/ipfs/go-ipfs-blocksutil v0.0.1
 	github.com/ipfs/go-ipfs-chunker v0.0.5
@@ -101,18 +101,18 @@ require (
 	github.com/ipfs/go-metrics-interface v0.0.1
 	github.com/ipfs/go-metrics-prometheus v0.0.2
 	github.com/ipfs/go-unixfs v0.3.1
-	github.com/ipfs/go-unixfsnode v1.2.0
+	github.com/ipfs/go-unixfsnode v1.4.0
 	github.com/ipfs/interface-go-ipfs-core v0.5.2
 	github.com/ipld/go-car v0.3.3
 	github.com/ipld/go-car/v2 v2.1.1
 	github.com/ipld/go-codec-dagpb v1.3.0
-	github.com/ipld/go-ipld-prime v0.14.4
+	github.com/ipld/go-ipld-prime v0.16.0
 	github.com/ipld/go-ipld-selector-text-lite v0.0.1
 	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/kelseyhightower/envconfig v1.4.0
 	github.com/libp2p/go-buffer-pool v0.0.2
 	github.com/libp2p/go-eventbus v0.2.1
-	github.com/libp2p/go-libp2p v0.18.0-rc5
+	github.com/libp2p/go-libp2p v0.18.0-rc6
 	github.com/libp2p/go-libp2p-connmgr v0.3.1 // indirect
 	github.com/libp2p/go-libp2p-core v0.14.0
 	github.com/libp2p/go-libp2p-discovery v0.6.0
@@ -122,7 +122,7 @@ require (
 	github.com/libp2p/go-libp2p-pubsub v0.6.1
 	github.com/libp2p/go-libp2p-quic-transport v0.16.1
 	github.com/libp2p/go-libp2p-record v0.1.3
-	github.com/libp2p/go-libp2p-resource-manager v0.1.4
+	github.com/libp2p/go-libp2p-resource-manager v0.1.5
 	github.com/libp2p/go-libp2p-routing-helpers v0.2.3
 	github.com/libp2p/go-libp2p-swarm v0.10.2
 	github.com/libp2p/go-libp2p-tls v0.3.1
diff --git a/go.sum b/go.sum
index d1c445f87..da6543f2b 100644
--- a/go.sum
+++ b/go.sum
@@ -324,8 +324,9 @@ github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03/go.mod
 github.com/filecoin-project/go-crypto v0.0.1 h1:AcvpSGGCgjaY8y1az6AMfKQWreF/pWO2JJGLl6gCq6o=
 github.com/filecoin-project/go-crypto v0.0.1/go.mod h1:+viYnvGtUTgJRdy6oaeF4MTFKAfatX071MPDPBL11EQ=
 github.com/filecoin-project/go-dagaggregator-unixfs v0.2.0/go.mod h1:WTuJWgBQY0omnQqa8kRPT9O0Uj5wQOgslVMUuTeHdJ8=
-github.com/filecoin-project/go-data-transfer v1.14.0 h1:4pnfJk8FYtqcdAg+QRGzaz57seUC/Tz+HJgPuGB7zdg=
 github.com/filecoin-project/go-data-transfer v1.14.0/go.mod h1:wNJKhaLLYBJDM3VFvgvYi4iUjPa69pz/1Q5Q4HzX2wE=
+github.com/filecoin-project/go-data-transfer v1.15.0 h1:gVH7MxEgoj/qXPz+S6ggFlHlDv1mLlRZuJtTvcq8r1o=
+github.com/filecoin-project/go-data-transfer v1.15.0/go.mod h1:RaJIYjh6x6z+FXKNvUULOdUZdN+JutKigfcMMbfykWA=
 github.com/filecoin-project/go-ds-versioning v0.0.0-20211206185234-508abd7c2aff/go.mod h1:C9/l9PnB1+mwPa26BBVpCjG/XQCB0yj/q5CK2J8X1I4=
 github.com/filecoin-project/go-ds-versioning v0.1.1 h1:JiyBqaQlwC+UM0WhcBtVEeT3XrX59mQhT8U3p7nu86o=
 github.com/filecoin-project/go-ds-versioning v0.1.1/go.mod h1:C9/l9PnB1+mwPa26BBVpCjG/XQCB0yj/q5CK2J8X1I4=
@@ -410,8 +411,9 @@ github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVB
 github.com/franela/goblin v0.0.0-20210519012713-85d372ac71e2/go.mod h1:VzmDKDJVZI3aJmnRI9VjAn9nJ8qPPsN1fqzr9dqInIo=
 github.com/franela/goreq v0.0.0-20171204163338-bcd34c9993f8/go.mod h1:ZhphrRTfi2rbfLwlschooIH4+wKKDR4Pdxhh+TRoA20=
 github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k=
-github.com/frankban/quicktest v1.14.0 h1:+cqqvzZV87b4adx/5ayVOaYZ2CrvM4ejQvUdBzPPUss=
 github.com/frankban/quicktest v1.14.0/go.mod h1:NeW+ay9A/U67EYXNFA1nPE8e/tnQv/09mUdL/ijj8og=
+github.com/frankban/quicktest v1.14.2 h1:SPb1KFFmM+ybpEjPUhCCkZOM5xlovT5UbrMvWnXyBns=
+github.com/frankban/quicktest v1.14.2/go.mod h1:mgiwOwqx65TmIk1wJ6Q7wvnVMocbUorkibMOrVTHZps=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.5.1 h1:mZcQUHVQUQWoPXXtuf9yuEXKudkV2sx1E06UadKWpgI=
@@ -551,8 +553,9 @@ github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.7 h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o=
+github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
@@ -754,8 +757,9 @@ github.com/ipfs/go-fs-lock v0.0.6/go.mod h1:OTR+Rj9sHiRubJh3dRhD15Juhd/+w6VPOY28
 github.com/ipfs/go-fs-lock v0.0.7 h1:6BR3dajORFrFTkb5EpCUFIAypsoxpGpDSVUdFwzgL9U=
 github.com/ipfs/go-fs-lock v0.0.7/go.mod h1:Js8ka+FNYmgQRLrRXzU3CB/+Csr1BwrRilEcvYrHhhc=
 github.com/ipfs/go-graphsync v0.11.0/go.mod h1:wC+c8vGVjAHthsVIl8LKr37cUra2GOaMYcQNNmMxDqE=
-github.com/ipfs/go-graphsync v0.12.0 h1:QCsVHVzb9FTkcm3NEa8GjXnUeGit1L9s08HcSVQ4m/g=
 github.com/ipfs/go-graphsync v0.12.0/go.mod h1:nASYWYETgsnMbQ3+DirNImOHQ8TY0a5AhAqyOY55tUg=
+github.com/ipfs/go-graphsync v0.13.0 h1:8reYjVKxKocJ9jD471xs9XNuegquPrnBFuGZmCqT8zU=
+github.com/ipfs/go-graphsync v0.13.0/go.mod h1:oPBU9JGNlyWHyH9lWYmyl19M++5yiXjBnNC4boh5nVU=
 github.com/ipfs/go-ipfs v0.11.0/go.mod h1:g68Thu2Ho11AWoHsN34P5fSK7iA6OWWRy3T/g8HLixc=
 github.com/ipfs/go-ipfs-blockstore v0.0.1/go.mod h1:d3WClOmRQKFnJ0Jz/jj/zmksX0ma1gROTlovZKBmN08=
 github.com/ipfs/go-ipfs-blockstore v0.1.0/go.mod h1:5aD0AvHPi7mZc6Ci1WCAhiBQu2IsfTduLl+422H6Rqw=
@@ -886,8 +890,9 @@ github.com/ipfs/go-unixfs v0.3.1 h1:LrfED0OGfG98ZEegO4/xiprx2O+yS+krCMQSp7zLVv8=
 github.com/ipfs/go-unixfs v0.3.1/go.mod h1:h4qfQYzghiIc8ZNFKiLMFWOTzrWIAtzYQ59W/pCFf1o=
 github.com/ipfs/go-unixfsnode v1.1.2/go.mod h1:5dcE2x03pyjHk4JjamXmunTMzz+VUtqvPwZjIEkfV6s=
 github.com/ipfs/go-unixfsnode v1.1.3/go.mod h1:ZZxUM5wXBC+G0Co9FjrYTOm+UlhZTjxLfRYdWY9veZ4=
-github.com/ipfs/go-unixfsnode v1.2.0 h1:tHHBJftsJyHGa8bS62PpkYNqHy/Sug3c/vxxC8NaGQY=
 github.com/ipfs/go-unixfsnode v1.2.0/go.mod h1:mQEgLjxkV/1mohkC4p7taRRBYPBeXu97SA3YaerT2q0=
+github.com/ipfs/go-unixfsnode v1.4.0 h1:9BUxHBXrbNi8mWHc6j+5C580WJqtVw9uoeEKn4tMhwA=
+github.com/ipfs/go-unixfsnode v1.4.0/go.mod h1:qc7YFFZ8tABc58p62HnIYbUMwj9chhUuFWmxSokfePo=
 github.com/ipfs/go-verifcid v0.0.1 h1:m2HI7zIuR5TFyQ1b79Da5N9dnnCP1vcu2QqawmWlK2E=
 github.com/ipfs/go-verifcid v0.0.1/go.mod h1:5Hrva5KBeIog4A+UpqlaIU+DEstipcJYQQZc0g37pY0=
 github.com/ipfs/interface-go-ipfs-core v0.4.0/go.mod h1:UJBcU6iNennuI05amq3FQ7g0JHUkibHFAfhfUIy927o=
@@ -918,8 +923,9 @@ github.com/ipld/go-ipld-prime v0.14.0/go.mod h1:9ASQLwUFLptCov6lIYc70GRB4V7UTyLD
 github.com/ipld/go-ipld-prime v0.14.1/go.mod h1:QcE4Y9n/ZZr8Ijg5bGPT0GqYWgZ1704nH0RDcQtgTP0=
 github.com/ipld/go-ipld-prime v0.14.2/go.mod h1:QcE4Y9n/ZZr8Ijg5bGPT0GqYWgZ1704nH0RDcQtgTP0=
 github.com/ipld/go-ipld-prime v0.14.3-0.20211207234443-319145880958/go.mod h1:QcE4Y9n/ZZr8Ijg5bGPT0GqYWgZ1704nH0RDcQtgTP0=
-github.com/ipld/go-ipld-prime v0.14.4 h1:bqhmume8+nbNsX4/+J6eohktfZHAI8GKrF3rQ0xgOyc=
 github.com/ipld/go-ipld-prime v0.14.4/go.mod h1:QcE4Y9n/ZZr8Ijg5bGPT0GqYWgZ1704nH0RDcQtgTP0=
+github.com/ipld/go-ipld-prime v0.16.0 h1:RS5hhjB/mcpeEPJvfyj0qbOj/QL+/j05heZ0qa97dVo=
+github.com/ipld/go-ipld-prime v0.16.0/go.mod h1:axSCuOCBPqrH+gvXr2w9uAOulJqBPhHPT2PjoiiU1qA=
 github.com/ipld/go-ipld-prime-proto v0.0.0-20191113031812-e32bd156a1e5/go.mod h1:gcvzoEDBjwycpXt3LBE061wT9f46szXGHAmj9uoP6fU=
 github.com/ipld/go-ipld-prime/storage/bsadapter v0.0.0-20211210234204-ce2a1c70cd73 h1:TsyATB2ZRRQGTwafJdgEUQkmjOExRV0DNokcihZxbnQ=
 github.com/ipld/go-ipld-prime/storage/bsadapter v0.0.0-20211210234204-ce2a1c70cd73/go.mod h1:2PJ0JgxyB08t0b2WKrcuqI3di0V+5n6RS/LTUJhkoxY=
@@ -1060,8 +1066,8 @@ github.com/libp2p/go-libp2p v0.16.0/go.mod h1:ump42BsirwAWxKzsCiFnTtN1Yc+DuPu76f
 github.com/libp2p/go-libp2p v0.17.0/go.mod h1:Fkin50rsGdv5mm5BshBUtPRZknt9esfmYXBOYcwOTgw=
 github.com/libp2p/go-libp2p v0.18.0-rc1/go.mod h1:RgYlH7IIWHXREimC92bw5Lg1V2R5XmSzuLHb5fTnr+8=
 github.com/libp2p/go-libp2p v0.18.0-rc3/go.mod h1:WYL+Xw1iuwi6rdfzw5VIEpD+HqzYucHZ6fcUuumbI3M=
-github.com/libp2p/go-libp2p v0.18.0-rc5 h1:88wWDHb9nNo0vBNCupLde3OTnFAkugOCNkrDfl3ivK4=
-github.com/libp2p/go-libp2p v0.18.0-rc5/go.mod h1:aZPS5l84bDvCvP4jkyEUT/J6YOpUq33Fgqrs3K59mpI=
+github.com/libp2p/go-libp2p v0.18.0-rc6 h1:IR6TVPYGo1wDY0tY61gyPQVxK1koOkXh49ejVfAnH7A=
+github.com/libp2p/go-libp2p v0.18.0-rc6/go.mod h1:oOUOAlBrm1L0+jxT10h2TMUMTDz6pV3EvmkJ3beDYGQ=
 github.com/libp2p/go-libp2p-asn-util v0.0.0-20200825225859-85005c6cf052/go.mod h1:nRMRTab+kZuk0LnKZpxhOVH/ndsdr2Nr//Zltc/vwgo=
 github.com/libp2p/go-libp2p-asn-util v0.1.0 h1:rABPCO77SjdbJ/eJ/ynIo8vWICy1VEnL5JAxJbQLo1E=
 github.com/libp2p/go-libp2p-asn-util v0.1.0/go.mod h1:wu+AnM9Ii2KgO5jMmS1rz9dvzTdj8BXqsPR9HR0XB7I=
@@ -1173,8 +1179,9 @@ github.com/libp2p/go-libp2p-mplex v0.2.3/go.mod h1:CK3p2+9qH9x+7ER/gWWDYJ3QW5ZxW
 github.com/libp2p/go-libp2p-mplex v0.3.0/go.mod h1:l9QWxRbbb5/hQMECEb908GbS9Sm2UAR2KFZKUJEynEs=
 github.com/libp2p/go-libp2p-mplex v0.4.0/go.mod h1:yCyWJE2sc6TBTnFpjvLuEJgTSw/u+MamvzILKdX7asw=
 github.com/libp2p/go-libp2p-mplex v0.4.1/go.mod h1:cmy+3GfqfM1PceHTLL7zQzAAYaryDu6iPSC+CIb094g=
-github.com/libp2p/go-libp2p-mplex v0.5.0 h1:vt3k4E4HSND9XH4Z8rUpacPJFSAgLOv6HDvG8W9Ks9E=
 github.com/libp2p/go-libp2p-mplex v0.5.0/go.mod h1:eLImPJLkj3iG5t5lq68w3Vm5NAQ5BcKwrrb2VmOYb3M=
+github.com/libp2p/go-libp2p-mplex v0.6.0 h1:5ubK4/vLE2JkogKlJ2JLeXcSfA6qY6mE2HMJV9ve/Sk=
+github.com/libp2p/go-libp2p-mplex v0.6.0/go.mod h1:i3usuPrBbh9FD2fLZjGpotyNkwr42KStYZQY7BeTiu4=
 github.com/libp2p/go-libp2p-nat v0.0.4/go.mod h1:N9Js/zVtAXqaeT99cXgTV9e75KpnWCvVOiGzlcHmBbY=
 github.com/libp2p/go-libp2p-nat v0.0.5/go.mod h1:1qubaE5bTZMJE+E/uu2URroMbzdubFz1ChgiN79yKPE=
 github.com/libp2p/go-libp2p-nat v0.0.6/go.mod h1:iV59LVhB3IkFvS6S6sauVTSOrNEANnINbI/fkaLimiw=
@@ -1232,8 +1239,8 @@ github.com/libp2p/go-libp2p-record v0.1.3 h1:R27hoScIhQf/A8XJZ8lYpnqh9LatJ5YbHs2
 github.com/libp2p/go-libp2p-record v0.1.3/go.mod h1:yNUff/adKIfPnYQXgp6FQmNu3gLJ6EMg7+/vv2+9pY4=
 github.com/libp2p/go-libp2p-resource-manager v0.1.0/go.mod h1:wJPNjeE4XQlxeidwqVY5G6DLOKqFK33u2n8blpl0I6Y=
 github.com/libp2p/go-libp2p-resource-manager v0.1.3/go.mod h1:wJPNjeE4XQlxeidwqVY5G6DLOKqFK33u2n8blpl0I6Y=
-github.com/libp2p/go-libp2p-resource-manager v0.1.4 h1:RcxMD0pytOUimx3BqTVs6IqItb3H5Qg44SD7XyT68lw=
-github.com/libp2p/go-libp2p-resource-manager v0.1.4/go.mod h1:wJPNjeE4XQlxeidwqVY5G6DLOKqFK33u2n8blpl0I6Y=
+github.com/libp2p/go-libp2p-resource-manager v0.1.5 h1:7J6t9KLFS0MxXDTfqA6rwfVCZl/yLQnXW5LpZjHAANI=
+github.com/libp2p/go-libp2p-resource-manager v0.1.5/go.mod h1:wJPNjeE4XQlxeidwqVY5G6DLOKqFK33u2n8blpl0I6Y=
 github.com/libp2p/go-libp2p-routing v0.0.1/go.mod h1:N51q3yTr4Zdr7V8Jt2JIktVU+3xBBylx1MZeVA6t1Ys=
 github.com/libp2p/go-libp2p-routing v0.1.0/go.mod h1:zfLhI1RI8RLEzmEaaPwzonRvXeeSHddONWkcTcB54nE=
 github.com/libp2p/go-libp2p-routing-helpers v0.2.3 h1:xY61alxJ6PurSi+MXbywZpelvuU4U4p/gPTxjqCqTzY=
@@ -1272,8 +1279,9 @@ github.com/libp2p/go-libp2p-testing v0.4.0/go.mod h1:Q+PFXYoiYFN5CAEG2w3gLPEzotl
 github.com/libp2p/go-libp2p-testing v0.4.2/go.mod h1:Q+PFXYoiYFN5CAEG2w3gLPEzotlKsNSbKQ/lImlOWF0=
 github.com/libp2p/go-libp2p-testing v0.5.0/go.mod h1:QBk8fqIL1XNcno/l3/hhaIEn4aLRijpYOR+zVjjlh+A=
 github.com/libp2p/go-libp2p-testing v0.6.0/go.mod h1:QBk8fqIL1XNcno/l3/hhaIEn4aLRijpYOR+zVjjlh+A=
-github.com/libp2p/go-libp2p-testing v0.7.0 h1:9bfyhNINizxuLrKsenzGaZalXRXIaAEmx1BP/PzF1gM=
 github.com/libp2p/go-libp2p-testing v0.7.0/go.mod h1:OLbdn9DbgdMwv00v+tlp1l3oe2Cl+FAjoWIA2pa0X6E=
+github.com/libp2p/go-libp2p-testing v0.8.0 h1:/te8SOIyj5sGH5Jr1Uoo+qYB00aK8O4+yHGzLgfE3kc=
+github.com/libp2p/go-libp2p-testing v0.8.0/go.mod h1:gRdsNxQSxAZowTgcLY7CC33xPmleZzoBpqSYbWenqPc=
 github.com/libp2p/go-libp2p-tls v0.1.3/go.mod h1:wZfuewxOndz5RTnCAxFliGjvYSDA40sKitV4c50uI1M=
 github.com/libp2p/go-libp2p-tls v0.3.0/go.mod h1:fwF5X6PWGxm6IDRwF3V8AVCCj/hOd5oFlg+wo2FxJDY=
 github.com/libp2p/go-libp2p-tls v0.3.1 h1:lsE2zYte+rZCEOHF72J1Fg3XK3dGQyKvI6i5ehJfEp0=
@@ -1325,8 +1333,9 @@ github.com/libp2p/go-mplex v0.1.1/go.mod h1:Xgz2RDCi3co0LeZfgjm4OgUF15+sVR8SRcu3
 github.com/libp2p/go-mplex v0.1.2/go.mod h1:Xgz2RDCi3co0LeZfgjm4OgUF15+sVR8SRcu3SFXI1lk=
 github.com/libp2p/go-mplex v0.2.0/go.mod h1:0Oy/A9PQlwBytDRp4wSkFnzHYDKcpLot35JQ6msjvYQ=
 github.com/libp2p/go-mplex v0.3.0/go.mod h1:0Oy/A9PQlwBytDRp4wSkFnzHYDKcpLot35JQ6msjvYQ=
-github.com/libp2p/go-mplex v0.4.0 h1:Ukkez9/4EOX5rTw4sHefNJp10dksftAA05ZgyjplUbM=
 github.com/libp2p/go-mplex v0.4.0/go.mod h1:y26Lx+wNVtMYMaPu300Cbot5LkEZ4tJaNYeHeT9dh6E=
+github.com/libp2p/go-mplex v0.6.0 h1:5kKp029zrsLVJT5q6ASt4LwuZFxj3B13wXXaGmFrWg0=
+github.com/libp2p/go-mplex v0.6.0/go.mod h1:y26Lx+wNVtMYMaPu300Cbot5LkEZ4tJaNYeHeT9dh6E=
 github.com/libp2p/go-msgio v0.0.2/go.mod h1:63lBBgOTDKQL6EWazRMCwXsEeEeK9O2Cd+0+6OOuipQ=
 github.com/libp2p/go-msgio v0.0.3/go.mod h1:63lBBgOTDKQL6EWazRMCwXsEeEeK9O2Cd+0+6OOuipQ=
 github.com/libp2p/go-msgio v0.0.4/go.mod h1:63lBBgOTDKQL6EWazRMCwXsEeEeK9O2Cd+0+6OOuipQ=
diff --git a/itests/batch_deal_test.go b/itests/batch_deal_test.go
index 93d338e53..0db90df23 100644
--- a/itests/batch_deal_test.go
+++ b/itests/batch_deal_test.go
@@ -9,16 +9,18 @@ import (
 
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
+	"github.com/stretchr/testify/require"
+
 	"github.com/filecoin-project/lotus/extern/storage-sealing/sealiface"
 	"github.com/filecoin-project/lotus/itests/kit"
 	"github.com/filecoin-project/lotus/markets/storageadapter"
 	"github.com/filecoin-project/lotus/node"
+	"github.com/filecoin-project/lotus/node/config"
+	"github.com/filecoin-project/lotus/node/modules"
 	"github.com/filecoin-project/lotus/node/modules/dtypes"
-	"github.com/stretchr/testify/require"
 )
 
 func TestBatchDealInput(t *testing.T) {
-	t.Skip("this test is disabled as it's flaky: #4611")
 	kit.QuietMiningLogs()
 
 	var (
@@ -47,17 +49,20 @@ func TestBatchDealInput(t *testing.T) {
 					})),
 				node.Override(new(dtypes.GetSealingConfigFunc), func() (dtypes.GetSealingConfigFunc, error) {
 					return func() (sealiface.Config, error) {
-						return sealiface.Config{
-							MaxWaitDealsSectors:       2,
-							MaxSealingSectors:         1,
-							MaxSealingSectorsForDeals: 3,
-							AlwaysKeepUnsealedCopy:    true,
-							WaitDealsDelay:            time.Hour,
-						}, nil
+						sc := modules.ToSealingConfig(config.DefaultStorageMiner())
+						sc.MaxWaitDealsSectors = 2
+						sc.MaxSealingSectors = 1
+						sc.MaxSealingSectorsForDeals = 3
+						sc.AlwaysKeepUnsealedCopy = true
+						sc.WaitDealsDelay = time.Hour
+						sc.BatchPreCommits = false
+						sc.AggregateCommits = false
+
+						return sc, nil
 					}, nil
 				}),
 			))
-			client, miner, ens := kit.EnsembleMinimal(t, kit.MockProofs(), opts)
+			client, miner, ens := kit.EnsembleMinimal(t, kit.MockProofs(), opts, kit.ThroughRPC())
 			ens.InterconnectAll().BeginMining(blockTime)
 			dh := kit.NewDealHarness(t, client, miner, miner)
 
@@ -126,9 +131,9 @@ func TestBatchDealInput(t *testing.T) {
 	t.Run("4-p513B", run(513, 4, 2))
 	if !testing.Short() {
 		t.Run("32-p257B", run(257, 32, 8))
-		t.Run("32-p10B", run(10, 32, 2))
 
 		// fixme: this appears to break data-transfer / markets in some really creative ways
+		//t.Run("32-p10B", run(10, 32, 2))
 		// t.Run("128-p10B", run(10, 128, 8))
 	}
 }
diff --git a/itests/kit/itestd.go b/itests/kit/itestd.go
new file mode 100644
index 000000000..5911a2031
--- /dev/null
+++ b/itests/kit/itestd.go
@@ -0,0 +1,36 @@
+package kit
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"os"
+)
+
+type ItestdNotif struct {
+	NodeType string // api env var name
+	TestName string
+	Api      string
+}
+
+func sendItestdNotif(nodeType, testName, apiAddr string) {
+	td := os.Getenv("LOTUS_ITESTD")
+	if td == "" {
+		// not running
+		return
+	}
+
+	notif := ItestdNotif{
+		NodeType: nodeType,
+		TestName: testName,
+		Api:      apiAddr,
+	}
+	nb, err := json.Marshal(&notif)
+	if err != nil {
+		return
+	}
+
+	if _, err := http.Post(td, "application/json", bytes.NewReader(nb)); err != nil { // nolint:gosec
+		return
+	}
+}
diff --git a/itests/kit/rpc.go b/itests/kit/rpc.go
index 8738b3249..99fc18c74 100644
--- a/itests/kit/rpc.go
+++ b/itests/kit/rpc.go
@@ -43,6 +43,7 @@ func fullRpc(t *testing.T, f *TestFullNode) *TestFullNode {
 
 	srv, maddr := CreateRPCServer(t, handler, l)
 	fmt.Printf("FULLNODE RPC ENV FOR CLI DEBUGGING `export FULLNODE_API_INFO=%s`\n", "ws://"+srv.Listener.Addr().String())
+	sendItestdNotif("FULLNODE_API_INFO", t.Name(), "ws://"+srv.Listener.Addr().String())
 
 	cl, stop, err := client.NewFullNodeRPCV1(context.Background(), "ws://"+srv.Listener.Addr().String()+"/rpc/v1", nil)
 	require.NoError(t, err)
@@ -60,6 +61,7 @@ func minerRpc(t *testing.T, m *TestMiner) *TestMiner {
 
 	fmt.Printf("creating RPC server for %s at %s\n", m.ActorAddr, srv.Listener.Addr().String())
 	fmt.Printf("SP RPC ENV FOR CLI DEBUGGING `export MINER_API_INFO=%s`\n", "ws://"+srv.Listener.Addr().String())
+	sendItestdNotif("MINER_API_INFO", t.Name(), "ws://"+srv.Listener.Addr().String())
 
 	url := "ws://" + srv.Listener.Addr().String() + "/rpc/v0"
 	cl, stop, err := client.NewStorageMinerRPCV0(context.Background(), url, nil)
diff --git a/itests/sector_miner_collateral_test.go b/itests/sector_miner_collateral_test.go
index af67b132b..81aefc3ad 100644
--- a/itests/sector_miner_collateral_test.go
+++ b/itests/sector_miner_collateral_test.go
@@ -17,6 +17,8 @@ import (
 	"github.com/filecoin-project/lotus/extern/storage-sealing/sealiface"
 	"github.com/filecoin-project/lotus/itests/kit"
 	"github.com/filecoin-project/lotus/node"
+	"github.com/filecoin-project/lotus/node/config"
+	"github.com/filecoin-project/lotus/node/modules"
 	"github.com/filecoin-project/lotus/node/modules/dtypes"
 	"github.com/filecoin-project/lotus/node/repo"
 )
@@ -40,29 +42,31 @@ func TestMinerBalanceCollateral(t *testing.T) {
 		opts := kit.ConstructorOpts(
 			node.ApplyIf(node.IsType(repo.StorageMiner), node.Override(new(dtypes.GetSealingConfigFunc), func() (dtypes.GetSealingConfigFunc, error) {
 				return func() (sealiface.Config, error) {
-					return sealiface.Config{
-						MaxWaitDealsSectors:       4,
-						MaxSealingSectors:         4,
-						MaxSealingSectorsForDeals: 4,
-						AlwaysKeepUnsealedCopy:    true,
-						WaitDealsDelay:            time.Hour,
+					sc := modules.ToSealingConfig(config.DefaultStorageMiner())
 
-						BatchPreCommits:  batching,
-						AggregateCommits: batching,
+					sc.MaxWaitDealsSectors = 4
+					sc.MaxSealingSectors = 4
+					sc.MaxSealingSectorsForDeals = 4
+					sc.AlwaysKeepUnsealedCopy = true
+					sc.WaitDealsDelay = time.Hour
 
-						PreCommitBatchWait: time.Hour,
-						CommitBatchWait:    time.Hour,
+					sc.BatchPreCommits = batching
+					sc.AggregateCommits = batching
 
-						MinCommitBatch:    nSectors,
-						MaxPreCommitBatch: nSectors,
-						MaxCommitBatch:    nSectors,
+					sc.PreCommitBatchWait = time.Hour
+					sc.CommitBatchWait = time.Hour
 
-						CollateralFromMinerBalance: enabled,
-						AvailableBalanceBuffer:     big.Zero(),
-						DisableCollateralFallback:  false,
-						AggregateAboveBaseFee:      big.Zero(),
-						BatchPreCommitAboveBaseFee: big.Zero(),
-					}, nil
+					sc.MinCommitBatch = nSectors
+					sc.MaxPreCommitBatch = nSectors
+					sc.MaxCommitBatch = nSectors
+
+					sc.CollateralFromMinerBalance = enabled
+					sc.AvailableBalanceBuffer = big.Zero()
+					sc.DisableCollateralFallback = false
+					sc.AggregateAboveBaseFee = big.Zero()
+					sc.BatchPreCommitAboveBaseFee = big.Zero()
+
+					return sc, nil
 				}, nil
 			})),
 		)
diff --git a/lib/lotuslog/config.go b/lib/lotuslog/config.go
new file mode 100644
index 000000000..bf6ceb63f
--- /dev/null
+++ b/lib/lotuslog/config.go
@@ -0,0 +1,11 @@
+package lotuslog
+
+import logging "github.com/ipfs/go-log/v2"
+
+func SetLevelsFromConfig(l map[string]string) {
+	for sys, level := range l {
+		if err := logging.SetLogLevel(sys, level); err != nil {
+			continue
+		}
+	}
+}
diff --git a/node/builder.go b/node/builder.go
index 81de3890d..acda5a07a 100644
--- a/node/builder.go
+++ b/node/builder.go
@@ -33,6 +33,7 @@ import (
 	"github.com/filecoin-project/lotus/extern/sector-storage/stores"
 	"github.com/filecoin-project/lotus/journal"
 	"github.com/filecoin-project/lotus/journal/alerting"
+	"github.com/filecoin-project/lotus/lib/lotuslog"
 	"github.com/filecoin-project/lotus/lib/peermgr"
 	_ "github.com/filecoin-project/lotus/lib/sigs/bls"
 	_ "github.com/filecoin-project/lotus/lib/sigs/secp"
@@ -249,6 +250,9 @@ func Base() Option {
 
 // Config sets up constructors based on the provided Config
 func ConfigCommon(cfg *config.Common, enableLibp2pNode bool) Option {
+	// setup logging early
+	lotuslog.SetLevelsFromConfig(cfg.Logging.SubsystemLevels)
+
 	return Options(
 		func(s *Settings) error { s.Config = true; return nil },
 		Override(new(dtypes.APIEndpoint), func() (dtypes.APIEndpoint, error) {
diff --git a/node/config/def.go b/node/config/def.go
index 233eccdd5..edc7ffef5 100644
--- a/node/config/def.go
+++ b/node/config/def.go
@@ -47,6 +47,11 @@ func defCommon() Common {
 			ListenAddress: "/ip4/127.0.0.1/tcp/1234/http",
 			Timeout:       Duration(30 * time.Second),
 		},
+		Logging: Logging{
+			SubsystemLevels: map[string]string{
+				"example-subsystem": "INFO",
+			},
+		},
 		Libp2p: Libp2p{
 			ListenAddresses: []string{
 				"/ip4/0.0.0.0/tcp/0",
diff --git a/node/config/def_test.go b/node/config/def_test.go
index a7a0e77ca..9601ee95b 100644
--- a/node/config/def_test.go
+++ b/node/config/def_test.go
@@ -32,6 +32,24 @@ func TestDefaultFullNodeRoundtrip(t *testing.T) {
 	require.True(t, reflect.DeepEqual(c, c2))
 }
 
+func TestDefaultFullNodeCommentRoundtrip(t *testing.T) {
+	c := DefaultFullNode()
+
+	var s string
+	{
+		c, err := ConfigComment(DefaultFullNode())
+		require.NoError(t, err)
+		s = string(c)
+	}
+
+	c2, err := FromReader(strings.NewReader(s), DefaultFullNode())
+	require.NoError(t, err)
+
+	fmt.Println(s)
+
+	require.True(t, reflect.DeepEqual(c, c2))
+}
+
 func TestDefaultMinerRoundtrip(t *testing.T) {
 	c := DefaultStorageMiner()
 
diff --git a/node/config/doc_gen.go b/node/config/doc_gen.go
index ccee363b4..edb4cf892 100644
--- a/node/config/doc_gen.go
+++ b/node/config/doc_gen.go
@@ -127,6 +127,12 @@ of automatically performing on-chain operations.`,
 
 			Comment: ``,
 		},
+		{
+			Name: "Logging",
+			Type: "Logging",
+
+			Comment: ``,
+		},
 		{
 			Name: "Libp2p",
 			Type: "Libp2p",
@@ -484,6 +490,14 @@ count towards this limit.`,
 closed by the connection manager.`,
 		},
 	},
+	"Logging": []DocField{
+		{
+			Name: "SubsystemLevels",
+			Type: "map[string]string",
+
+			Comment: `SubsystemLevels specify per-subsystem log levels`,
+		},
+	},
 	"MinerAddressConfig": []DocField{
 		{
 			Name: "PreCommitControl",
diff --git a/node/config/doc_util.go b/node/config/doc_util.go
index ee70a9cfd..b88333238 100644
--- a/node/config/doc_util.go
+++ b/node/config/doc_util.go
@@ -16,7 +16,7 @@ func findDoc(root interface{}, section, name string) *DocField {
 	return findDocSect("Common", section, name)
 }
 
-func findDocSect(root string, section, name string) *DocField {
+func findDocSect(root, section, name string) *DocField {
 	path := strings.Split(section, ".")
 
 	docSection := Doc[root]
diff --git a/node/config/load.go b/node/config/load.go
index db3914b6b..a76db7caf 100644
--- a/node/config/load.go
+++ b/node/config/load.go
@@ -69,7 +69,7 @@ func ConfigUpdate(cfgCur, cfgDef interface{}, comment bool) ([]byte, error) {
 	}
 
 	if comment {
-		// create a map of default lines so we can comment those out later
+		// create a map of default lines, so we can comment those out later
 		defLines := strings.Split(defStr, "\n")
 		defaults := map[string]struct{}{}
 		for i := range defLines {
diff --git a/node/config/types.go b/node/config/types.go
index 55f924f2a..8320aea7e 100644
--- a/node/config/types.go
+++ b/node/config/types.go
@@ -13,10 +13,11 @@ import (
 
 // Common is common config between full node and miner
 type Common struct {
-	API    API
-	Backup Backup
-	Libp2p Libp2p
-	Pubsub Pubsub
+	API     API
+	Backup  Backup
+	Logging Logging
+	Libp2p  Libp2p
+	Pubsub  Pubsub
 }
 
 // FullNode is a full node config
@@ -39,6 +40,12 @@ type Backup struct {
 	DisableMetadataLog bool
 }
 
+// Logging is the logging system config
+type Logging struct {
+	// SubsystemLevels specify per-subsystem log levels
+	SubsystemLevels map[string]string
+}
+
 // StorageMiner is a miner config
 type StorageMiner struct {
 	Common
diff --git a/node/impl/client/client.go b/node/impl/client/client.go
index 1730b7a7a..f105d3152 100644
--- a/node/impl/client/client.go
+++ b/node/impl/client/client.go
@@ -47,7 +47,6 @@ import (
 
 	"github.com/filecoin-project/go-address"
 	cborutil "github.com/filecoin-project/go-cbor-util"
-	"github.com/filecoin-project/go-commp-utils/ffiwrapper"
 	"github.com/filecoin-project/go-commp-utils/writer"
 	datatransfer "github.com/filecoin-project/go-data-transfer"
 
@@ -1263,28 +1262,12 @@ func (a *API) ClientQueryAsk(ctx context.Context, p peer.ID, miner address.Addre
 }
 
 func (a *API) ClientCalcCommP(ctx context.Context, inpath string) (*api.CommPRet, error) {
-
-	// Hard-code the sector type to 32GiBV1_1, because:
-	// - ffiwrapper.GeneratePieceCIDFromFile requires a RegisteredSealProof
-	// - commP itself is sector-size independent, with rather low probability of that changing
-	//   ( note how the final rust call is identical for every RegSP type )
-	//   https://github.com/filecoin-project/rust-filecoin-proofs-api/blob/v5.0.0/src/seal.rs#L1040-L1050
-	//
-	// IF/WHEN this changes in the future we will have to be able to calculate
-	// "old style" commP, and thus will need to introduce a version switch or similar
-	arbitraryProofType := abi.RegisteredSealProof_StackedDrg64GiBV1_1
-
 	rdr, err := os.Open(inpath)
 	if err != nil {
 		return nil, err
 	}
 	defer rdr.Close() //nolint:errcheck
 
-	stat, err := rdr.Stat()
-	if err != nil {
-		return nil, err
-	}
-
 	// check that the data is a car file; if it's not, retrieval won't work
 	_, err = car.ReadHeader(bufio.NewReader(rdr))
 	if err != nil {
@@ -1295,16 +1278,20 @@ func (a *API) ClientCalcCommP(ctx context.Context, inpath string) (*api.CommPRet
 		return nil, xerrors.Errorf("seek to start: %w", err)
 	}
 
-	pieceReader, pieceSize := padreader.New(rdr, uint64(stat.Size()))
-	commP, err := ffiwrapper.GeneratePieceCIDFromFile(arbitraryProofType, pieceReader, pieceSize)
+	w := &writer.Writer{}
+	_, err = io.CopyBuffer(w, rdr, make([]byte, writer.CommPBuf))
+	if err != nil {
+		return nil, xerrors.Errorf("copy into commp writer: %w", err)
+	}
 
+	commp, err := w.Sum()
 	if err != nil {
 		return nil, xerrors.Errorf("computing commP failed: %w", err)
 	}
 
 	return &api.CommPRet{
-		Root: commP,
-		Size: pieceSize,
+		Root: commp.PieceCID,
+		Size: commp.PieceSize.Unpadded(),
 	}, nil
 }
 
diff --git a/node/impl/storminer.go b/node/impl/storminer.go
index 10e10f98a..86dcc2182 100644
--- a/node/impl/storminer.go
+++ b/node/impl/storminer.go
@@ -676,18 +676,18 @@ func (tc *transferConverter) convertTransfer(channelID datatransfer.ChannelID, h
 	}
 	var channelIDPtr *datatransfer.ChannelID
 	if !hasChannelID {
-		diagnostics = append(diagnostics, fmt.Sprintf("No data transfer channel id for GraphSync request ID %d", requestID))
+		diagnostics = append(diagnostics, fmt.Sprintf("No data transfer channel id for GraphSync request ID %s", requestID))
 	} else {
 		channelIDPtr = &channelID
 		if isCurrentChannelRequest && !hasState {
 			diagnostics = append(diagnostics, fmt.Sprintf("No current request state for data transfer channel id %s", channelID))
 		} else if !isCurrentChannelRequest && hasState {
-			diagnostics = append(diagnostics, fmt.Sprintf("Graphsync request %d is a previous request on data transfer channel id %s that was restarted, but it is still running", requestID, channelID))
+			diagnostics = append(diagnostics, fmt.Sprintf("Graphsync request %s is a previous request on data transfer channel id %s that was restarted, but it is still running", requestID, channelID))
 		}
 	}
 	diagnostics = append(diagnostics, tc.gsDiagnostics[requestID]...)
 	transfer := &api.GraphSyncDataTransfer{
-		RequestID:               requestID,
+		RequestID:               &requestID,
 		RequestState:            stateString,
 		IsCurrentChannelRequest: isCurrentChannelRequest,
 		ChannelID:               channelIDPtr,
@@ -717,7 +717,7 @@ func (tc *transferConverter) collectRemainingTransfers() {
 			channelID := channelID
 			cs := api.NewDataTransferChannel(channelState.SelfPeer(), channelState)
 			transfer := &api.GraphSyncDataTransfer{
-				RequestID:               graphsync.RequestID(-1),
+				RequestID:               nil,
 				RequestState:            "graphsync state unknown",
 				IsCurrentChannelRequest: false,
 				ChannelID:               &channelID,