X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/fd06e6ea3cd933ac31cce1de48e71456e1147845..88bb9b9fc4392f4a3514ae59e3ffd454d3ce90a8:/sdk/go/arvados/fs_collection_test.go

diff --git a/sdk/go/arvados/fs_collection_test.go b/sdk/go/arvados/fs_collection_test.go
index 8d59540d01..59a6a6ba82 100644
--- a/sdk/go/arvados/fs_collection_test.go
+++ b/sdk/go/arvados/fs_collection_test.go
@@ -16,18 +16,25 @@ import (
 	"os"
 	"regexp"
 	"runtime"
+	"runtime/pprof"
+	"strings"
 	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
 
-	"git.curoverse.com/arvados.git/sdk/go/arvadostest"
 	check "gopkg.in/check.v1"
 )
 
 var _ = check.Suite(&CollectionFSSuite{})
 
 type keepClientStub struct {
-	blocks map[string][]byte
+	blocks      map[string][]byte
+	refreshable map[string]bool
+	onPut       func(bufcopy []byte) // called from PutB, before acquiring lock
+	authToken   string               // client's auth token (used for signing locators)
+	sigkey      string               // blob signing key
+	sigttl      time.Duration        // blob signing ttl
 	sync.RWMutex
 }
 
@@ -44,30 +51,58 @@ func (kcs *keepClientStub) ReadAt(locator string, p []byte, off int) (int, error
 }
 
 func (kcs *keepClientStub) PutB(p []byte) (string, int, error) {
-	locator := fmt.Sprintf("%x+%d+A12345@abcde", md5.Sum(p), len(p))
+	locator := SignLocator(fmt.Sprintf("%x+%d", md5.Sum(p), len(p)), kcs.authToken, time.Now().Add(kcs.sigttl), kcs.sigttl, []byte(kcs.sigkey))
 	buf := make([]byte, len(p))
 	copy(buf, p)
+	if kcs.onPut != nil {
+		kcs.onPut(buf)
+	}
 	kcs.Lock()
 	defer kcs.Unlock()
 	kcs.blocks[locator[:32]] = buf
 	return locator, 1, nil
 }
 
+var reRemoteSignature = regexp.MustCompile(`\+[AR][^+]*`)
+
+func (kcs *keepClientStub) LocalLocator(locator string) (string, error) {
+	if strings.Contains(locator, "+A") {
+		return locator, nil
+	}
+	kcs.Lock()
+	defer kcs.Unlock()
+	if strings.Contains(locator, "+R") {
+		if len(locator) < 32 {
+			return "", fmt.Errorf("bad locator: %q", locator)
+		}
+		if _, ok := kcs.blocks[locator[:32]]; !ok && !kcs.refreshable[locator[:32]] {
+			return "", fmt.Errorf("kcs.refreshable[%q]==false", locator)
+		}
+	}
+	locator = reRemoteSignature.ReplaceAllLiteralString(locator, "")
+	locator = SignLocator(locator, kcs.authToken, time.Now().Add(kcs.sigttl), kcs.sigttl, []byte(kcs.sigkey))
+	return locator, nil
+}
+
 type CollectionFSSuite struct {
 	client *Client
 	coll   Collection
 	fs     CollectionFileSystem
-	kc     keepClient
+	kc     *keepClientStub
 }
 
 func (s *CollectionFSSuite) SetUpTest(c *check.C) {
 	s.client = NewClientFromEnv()
-	err := s.client.RequestAndDecode(&s.coll, "GET", "arvados/v1/collections/"+arvadostest.FooAndBarFilesInDirUUID, nil, nil)
+	err := s.client.RequestAndDecode(&s.coll, "GET", "arvados/v1/collections/"+fixtureFooAndBarFilesInDirUUID, nil, nil)
 	c.Assert(err, check.IsNil)
 	s.kc = &keepClientStub{
 		blocks: map[string][]byte{
 			"3858f62230ac3c915f300c664312c63f": []byte("foobar"),
-		}}
+		},
+		sigkey:    fixtureBlobSigningKey,
+		sigttl:    fixtureBlobSigningTTL,
+		authToken: fixtureActiveToken,
+	}
 	s.fs, err = s.coll.FileSystem(s.client, s.kc)
 	c.Assert(err, check.IsNil)
 }
@@ -399,6 +434,37 @@ func (s *CollectionFSSuite) TestSeekSparse(c *check.C) {
 	checkSize(11)
 }
 
+func (s *CollectionFSSuite) TestMarshalCopiesRemoteBlocks(c *check.C) {
+	foo := "foo"
+	bar := "bar"
+	hash := map[string]string{
+		foo: fmt.Sprintf("%x", md5.Sum([]byte(foo))),
+		bar: fmt.Sprintf("%x", md5.Sum([]byte(bar))),
+	}
+
+	fs, err := (&Collection{
+		ManifestText: ". " + hash[foo] + "+3+Rzaaaa-foo@bab " + hash[bar] + "+3+A12345@ffffff 0:2:fo.txt 2:4:obar.txt\n",
+	}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+	manifest, err := fs.MarshalManifest(".")
+	c.Check(manifest, check.Equals, "")
+	c.Check(err, check.NotNil)
+
+	s.kc.refreshable = map[string]bool{hash[bar]: true}
+
+	for _, sigIn := range []string{"Rzaaaa-foo@bab", "A12345@abcde"} {
+		fs, err = (&Collection{
+			ManifestText: ". " + hash[foo] + "+3+A12345@fffff " + hash[bar] + "+3+" + sigIn + " 0:2:fo.txt 2:4:obar.txt\n",
+		}).FileSystem(s.client, s.kc)
+		c.Assert(err, check.IsNil)
+		manifest, err := fs.MarshalManifest(".")
+		c.Check(err, check.IsNil)
+		// Both blocks should now have +A signatures.
+		c.Check(manifest, check.Matches, `.*\+A.* .*\+A.*\n`)
+		c.Check(manifest, check.Not(check.Matches), `.*\+R.*\n`)
+	}
+}
+
 func (s *CollectionFSSuite) TestMarshalSmallBlocks(c *check.C) {
 	maxBlockSize = 8
 	defer func() { maxBlockSize = 2 << 26 }()
@@ -480,7 +546,7 @@ func (s *CollectionFSSuite) TestConcurrentWriters(c *check.C) {
 	}
 
 	maxBlockSize = 8
-	defer func() { maxBlockSize = 2 << 26 }()
+	defer func() { maxBlockSize = 1 << 26 }()
 
 	var wg sync.WaitGroup
 	for n := 0; n < 128; n++ {
@@ -532,7 +598,7 @@ func (s *CollectionFSSuite) TestRandomWrites(c *check.C) {
 	const ngoroutines = 256
 
 	var wg sync.WaitGroup
-	for n := 0; n < nfiles; n++ {
+	for n := 0; n < ngoroutines; n++ {
 		wg.Add(1)
 		go func(n int) {
 			defer wg.Done()
@@ -541,7 +607,7 @@ func (s *CollectionFSSuite) TestRandomWrites(c *check.C) {
 			f, err := s.fs.OpenFile(fmt.Sprintf("random-%d", n), os.O_RDWR|os.O_CREATE|os.O_EXCL, 0)
 			c.Assert(err, check.IsNil)
 			defer f.Close()
-			for i := 0; i < ngoroutines; i++ {
+			for i := 0; i < nfiles; i++ {
 				trunc := rand.Intn(65)
 				woff := rand.Intn(trunc + 1)
 				wbytes = wbytes[:rand.Intn(64-woff+1)]
@@ -567,11 +633,18 @@ func (s *CollectionFSSuite) TestRandomWrites(c *check.C) {
 				c.Check(string(buf), check.Equals, string(expect))
 				c.Check(err, check.IsNil)
 			}
-			s.checkMemSize(c, f)
 		}(n)
 	}
 	wg.Wait()
 
+	for n := 0; n < ngoroutines; n++ {
+		f, err := s.fs.OpenFile(fmt.Sprintf("random-%d", n), os.O_RDONLY, 0)
+		c.Assert(err, check.IsNil)
+		f.(*filehandle).inode.(*filenode).waitPrune()
+		s.checkMemSize(c, f)
+		defer f.Close()
+	}
+
 	root, err := s.fs.Open("/")
 	c.Assert(err, check.IsNil)
 	defer root.Close()
@@ -641,6 +714,25 @@ func (s *CollectionFSSuite) TestRenameError(c *check.C) {
 	c.Check(data, check.DeepEquals, []byte{1, 2, 3, 4, 5})
 }
 
+func (s *CollectionFSSuite) TestRenameDirectory(c *check.C) {
+	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+	err = fs.Mkdir("foo", 0755)
+	c.Assert(err, check.IsNil)
+	err = fs.Mkdir("bar", 0755)
+	c.Assert(err, check.IsNil)
+	err = fs.Rename("bar", "baz")
+	c.Check(err, check.IsNil)
+	err = fs.Rename("foo", "baz")
+	c.Check(err, check.NotNil)
+	err = fs.Rename("foo", "baz/")
+	c.Check(err, check.IsNil)
+	err = fs.Rename("baz/foo", ".")
+	c.Check(err, check.Equals, ErrInvalidArgument)
+	err = fs.Rename("baz/foo/", ".")
+	c.Check(err, check.Equals, ErrInvalidArgument)
+}
+
 func (s *CollectionFSSuite) TestRename(c *check.C) {
 	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
 	c.Assert(err, check.IsNil)
@@ -791,11 +883,11 @@ func (s *CollectionFSSuite) TestPersist(c *check.C) {
 	}
 }
 
-func (s *CollectionFSSuite) TestPersistEmptyFiles(c *check.C) {
+func (s *CollectionFSSuite) TestPersistEmptyFilesAndDirs(c *check.C) {
 	var err error
 	s.fs, err = (&Collection{}).FileSystem(s.client, s.kc)
 	c.Assert(err, check.IsNil)
-	for _, name := range []string{"dir", "dir/zerodir", "zero", "zero/zero"} {
+	for _, name := range []string{"dir", "dir/zerodir", "empty", "not empty", "not empty/empty", "zero", "zero/zero"} {
 		err = s.fs.Mkdir(name, 0755)
 		c.Assert(err, check.IsNil)
 	}
@@ -841,6 +933,23 @@ func (s *CollectionFSSuite) TestPersistEmptyFiles(c *check.C) {
 		c.Check(err, check.IsNil)
 		c.Check(buf, check.DeepEquals, data)
 	}
+
+	expectDir := map[string]int{
+		"empty":           0,
+		"not empty":       1,
+		"not empty/empty": 0,
+	}
+	for name, expectLen := range expectDir {
+		_, err := persisted.Open(name + "/bogus")
+		c.Check(err, check.NotNil)
+
+		d, err := persisted.Open(name)
+		defer d.Close()
+		c.Check(err, check.IsNil)
+		fi, err := d.Readdir(-1)
+		c.Check(err, check.IsNil)
+		c.Check(fi, check.HasLen, expectLen)
+	}
 }
 
 func (s *CollectionFSSuite) TestOpenFileFlags(c *check.C) {
@@ -941,9 +1050,38 @@ func (s *CollectionFSSuite) TestOpenFileFlags(c *check.C) {
 	c.Check(err, check.ErrorMatches, `invalid flag.*`)
 }
 
-func (s *CollectionFSSuite) TestFlushFullBlocks(c *check.C) {
+func (s *CollectionFSSuite) TestFlushFullBlocksWritingLongFile(c *check.C) {
+	defer func(cw, mbs int) {
+		concurrentWriters = cw
+		maxBlockSize = mbs
+	}(concurrentWriters, maxBlockSize)
+	concurrentWriters = 2
 	maxBlockSize = 1024
-	defer func() { maxBlockSize = 2 << 26 }()
+
+	proceed := make(chan struct{})
+	var started, concurrent int32
+	blk2done := false
+	s.kc.onPut = func([]byte) {
+		atomic.AddInt32(&concurrent, 1)
+		switch atomic.AddInt32(&started, 1) {
+		case 1:
+			// Wait until block 2 starts and finishes, and block 3 starts
+			select {
+			case <-proceed:
+				c.Check(blk2done, check.Equals, true)
+			case <-time.After(time.Second):
+				c.Error("timed out")
+			}
+		case 2:
+			time.Sleep(time.Millisecond)
+			blk2done = true
+		case 3:
+			close(proceed)
+		default:
+			time.Sleep(time.Millisecond)
+		}
+		c.Check(atomic.AddInt32(&concurrent, -1) < int32(concurrentWriters), check.Equals, true)
+	}
 
 	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
 	c.Assert(err, check.IsNil)
@@ -969,6 +1107,7 @@ func (s *CollectionFSSuite) TestFlushFullBlocks(c *check.C) {
 		}
 		return
 	}
+	f.(*filehandle).inode.(*filenode).waitPrune()
 	c.Check(currentMemExtents(), check.HasLen, 1)
 
 	m, err := fs.MarshalManifest(".")
@@ -977,6 +1116,249 @@ func (s *CollectionFSSuite) TestFlushFullBlocks(c *check.C) {
 	c.Check(currentMemExtents(), check.HasLen, 0)
 }
 
+// Ensure blocks get flushed to disk if a lot of data is written to
+// small files/directories without calling sync().
+//
+// Write four 512KiB files into each of 256 top-level dirs (total
+// 512MiB), calling Flush() every 8 dirs. Ensure memory usage never
+// exceeds 24MiB (4 concurrentWriters * 2MiB + 8 unflushed dirs *
+// 2MiB).
+func (s *CollectionFSSuite) TestFlushAll(c *check.C) {
+	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+
+	s.kc.onPut = func([]byte) {
+		// discard flushed data -- otherwise the stub will use
+		// unlimited memory
+		time.Sleep(time.Millisecond)
+		s.kc.Lock()
+		defer s.kc.Unlock()
+		s.kc.blocks = map[string][]byte{}
+	}
+	for i := 0; i < 256; i++ {
+		buf := bytes.NewBuffer(make([]byte, 524288))
+		fmt.Fprintf(buf, "test file in dir%d", i)
+
+		dir := fmt.Sprintf("dir%d", i)
+		fs.Mkdir(dir, 0755)
+		for j := 0; j < 2; j++ {
+			f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, j), os.O_WRONLY|os.O_CREATE, 0)
+			c.Assert(err, check.IsNil)
+			defer f.Close()
+			_, err = io.Copy(f, buf)
+			c.Assert(err, check.IsNil)
+		}
+
+		if i%8 == 0 {
+			fs.Flush("", true)
+		}
+
+		size := fs.memorySize()
+		if !c.Check(size <= 1<<24, check.Equals, true) {
+			c.Logf("at dir%d fs.memorySize()=%d", i, size)
+			return
+		}
+	}
+}
+
+// Ensure short blocks at the end of a stream don't get flushed by
+// Flush(false).
+//
+// Write 67x 1MiB files to each of 8 dirs, and check that 8 full 64MiB
+// blocks have been flushed while 8x 3MiB is still buffered in memory.
+func (s *CollectionFSSuite) TestFlushFullBlocksOnly(c *check.C) {
+	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+
+	var flushed int64
+	s.kc.onPut = func(p []byte) {
+		atomic.AddInt64(&flushed, int64(len(p)))
+	}
+
+	nDirs := int64(8)
+	megabyte := make([]byte, 1<<20)
+	for i := int64(0); i < nDirs; i++ {
+		dir := fmt.Sprintf("dir%d", i)
+		fs.Mkdir(dir, 0755)
+		for j := 0; j < 67; j++ {
+			f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, j), os.O_WRONLY|os.O_CREATE, 0)
+			c.Assert(err, check.IsNil)
+			defer f.Close()
+			_, err = f.Write(megabyte)
+			c.Assert(err, check.IsNil)
+		}
+	}
+	c.Check(fs.memorySize(), check.Equals, int64(nDirs*67<<20))
+	c.Check(flushed, check.Equals, int64(0))
+
+	waitForFlush := func(expectUnflushed, expectFlushed int64) {
+		for deadline := time.Now().Add(5 * time.Second); fs.memorySize() > expectUnflushed && time.Now().Before(deadline); time.Sleep(10 * time.Millisecond) {
+		}
+		c.Check(fs.memorySize(), check.Equals, expectUnflushed)
+		c.Check(flushed, check.Equals, expectFlushed)
+	}
+
+	// Nothing flushed yet
+	waitForFlush((nDirs*67)<<20, 0)
+
+	// Flushing a non-empty dir "/" is non-recursive and there are
+	// no top-level files, so this has no effect
+	fs.Flush("/", false)
+	waitForFlush((nDirs*67)<<20, 0)
+
+	// Flush the full block in dir0
+	fs.Flush("dir0", false)
+	waitForFlush((nDirs*67-64)<<20, 64<<20)
+
+	err = fs.Flush("dir-does-not-exist", false)
+	c.Check(err, check.NotNil)
+
+	// Flush full blocks in all dirs
+	fs.Flush("", false)
+	waitForFlush(nDirs*3<<20, nDirs*64<<20)
+
+	// Flush non-full blocks, too
+	fs.Flush("", true)
+	waitForFlush(0, nDirs*67<<20)
+}
+
+// Even when writing lots of files/dirs from different goroutines, as
+// long as Flush(dir,false) is called after writing each file,
+// unflushed data should be limited to one full block per
+// concurrentWriter, plus one nearly-full block at the end of each
+// dir/stream.
+func (s *CollectionFSSuite) TestMaxUnflushed(c *check.C) {
+	nDirs := int64(8)
+	maxUnflushed := (int64(concurrentWriters) + nDirs) << 26
+
+	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+
+	release := make(chan struct{})
+	timeout := make(chan struct{})
+	time.AfterFunc(10*time.Second, func() { close(timeout) })
+	var putCount, concurrency int64
+	var unflushed int64
+	s.kc.onPut = func(p []byte) {
+		defer atomic.AddInt64(&unflushed, -int64(len(p)))
+		cur := atomic.AddInt64(&concurrency, 1)
+		defer atomic.AddInt64(&concurrency, -1)
+		pc := atomic.AddInt64(&putCount, 1)
+		if pc < int64(concurrentWriters) {
+			// Block until we reach concurrentWriters, to
+			// make sure we're really accepting concurrent
+			// writes.
+			select {
+			case <-release:
+			case <-timeout:
+				c.Error("timeout")
+			}
+		} else if pc == int64(concurrentWriters) {
+			// Unblock the first N-1 PUT reqs.
+			close(release)
+		}
+		c.Assert(cur <= int64(concurrentWriters), check.Equals, true)
+		c.Assert(atomic.LoadInt64(&unflushed) <= maxUnflushed, check.Equals, true)
+	}
+
+	var owg sync.WaitGroup
+	megabyte := make([]byte, 1<<20)
+	for i := int64(0); i < nDirs; i++ {
+		dir := fmt.Sprintf("dir%d", i)
+		fs.Mkdir(dir, 0755)
+		owg.Add(1)
+		go func() {
+			defer owg.Done()
+			defer fs.Flush(dir, true)
+			var iwg sync.WaitGroup
+			defer iwg.Wait()
+			for j := 0; j < 67; j++ {
+				iwg.Add(1)
+				go func(j int) {
+					defer iwg.Done()
+					f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, j), os.O_WRONLY|os.O_CREATE, 0)
+					c.Assert(err, check.IsNil)
+					defer f.Close()
+					n, err := f.Write(megabyte)
+					c.Assert(err, check.IsNil)
+					atomic.AddInt64(&unflushed, int64(n))
+					fs.Flush(dir, false)
+				}(j)
+			}
+		}()
+	}
+	owg.Wait()
+	fs.Flush("", true)
+}
+
+func (s *CollectionFSSuite) TestFlushStress(c *check.C) {
+	done := false
+	defer func() { done = true }()
+	time.AfterFunc(10*time.Second, func() {
+		if !done {
+			pprof.Lookup("goroutine").WriteTo(os.Stderr, 1)
+			panic("timeout")
+		}
+	})
+
+	wrote := 0
+	s.kc.onPut = func(p []byte) {
+		s.kc.Lock()
+		s.kc.blocks = map[string][]byte{}
+		wrote++
+		defer c.Logf("wrote block %d, %d bytes", wrote, len(p))
+		s.kc.Unlock()
+		time.Sleep(20 * time.Millisecond)
+	}
+
+	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+
+	data := make([]byte, 1<<20)
+	for i := 0; i < 3; i++ {
+		dir := fmt.Sprintf("dir%d", i)
+		fs.Mkdir(dir, 0755)
+		for j := 0; j < 200; j++ {
+			data[0] = byte(j)
+			f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, j), os.O_WRONLY|os.O_CREATE, 0)
+			c.Assert(err, check.IsNil)
+			_, err = f.Write(data)
+			c.Assert(err, check.IsNil)
+			f.Close()
+			fs.Flush(dir, false)
+		}
+		_, err := fs.MarshalManifest(".")
+		c.Check(err, check.IsNil)
+	}
+}
+
+func (s *CollectionFSSuite) TestFlushShort(c *check.C) {
+	s.kc.onPut = func([]byte) {
+		s.kc.Lock()
+		s.kc.blocks = map[string][]byte{}
+		s.kc.Unlock()
+	}
+	fs, err := (&Collection{}).FileSystem(s.client, s.kc)
+	c.Assert(err, check.IsNil)
+	for _, blocksize := range []int{8, 1000000} {
+		dir := fmt.Sprintf("dir%d", blocksize)
+		err = fs.Mkdir(dir, 0755)
+		c.Assert(err, check.IsNil)
+		data := make([]byte, blocksize)
+		for i := 0; i < 100; i++ {
+			f, err := fs.OpenFile(fmt.Sprintf("%s/file%d", dir, i), os.O_WRONLY|os.O_CREATE, 0)
+			c.Assert(err, check.IsNil)
+			_, err = f.Write(data)
+			c.Assert(err, check.IsNil)
+			f.Close()
+			fs.Flush(dir, false)
+		}
+		fs.Flush(dir, true)
+		_, err := fs.MarshalManifest(".")
+		c.Check(err, check.IsNil)
+	}
+}
+
 func (s *CollectionFSSuite) TestBrokenManifests(c *check.C) {
 	for _, txt := range []string{
 		"\n",
@@ -992,6 +1374,12 @@ func (s *CollectionFSSuite) TestBrokenManifests(c *check.C) {
 		". d41d8cd98f00b204e9800998ecf8427e+0 foo:0:foo\n",
 		". d41d8cd98f00b204e9800998ecf8427e+0 0:foo:foo\n",
 		". d41d8cd98f00b204e9800998ecf8427e+1 0:1:foo 1:1:bar\n",
+		". d41d8cd98f00b204e9800998ecf8427e+1 0:1:\\056\n",
+		". d41d8cd98f00b204e9800998ecf8427e+1 0:1:\\056\\057\\056\n",
+		". d41d8cd98f00b204e9800998ecf8427e+1 0:1:.\n",
+		". d41d8cd98f00b204e9800998ecf8427e+1 0:1:..\n",
+		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:..\n",
+		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:foo/..\n",
 		". d41d8cd98f00b204e9800998ecf8427e+1 0:0:foo\n./foo d41d8cd98f00b204e9800998ecf8427e+1 0:0:bar\n",
 		"./foo d41d8cd98f00b204e9800998ecf8427e+1 0:0:bar\n. d41d8cd98f00b204e9800998ecf8427e+1 0:0:foo\n",
 	} {
@@ -1007,7 +1395,9 @@ func (s *CollectionFSSuite) TestEdgeCaseManifests(c *check.C) {
 	for _, txt := range []string{
 		"",
 		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:foo\n",
-		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:foo 0:0:foo 0:0:bar\n",
+		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:...\n",
+		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:. 0:0:. 0:0:\\056 0:0:\\056\n",
+		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:foo/. 0:0:. 0:0:foo\\057bar\\057\\056\n",
 		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:foo 0:0:foo 0:0:bar\n",
 		". d41d8cd98f00b204e9800998ecf8427e+0 0:0:foo/bar\n./foo d41d8cd98f00b204e9800998ecf8427e+0 0:0:bar\n",
 	} {