1 files changed, 64 insertions, 0 deletions
diff --git a/weed/fix.go b/weed/fix.go
new file mode 100644
index 000000000..0a21965b7
--- /dev/null
+++ b/weed/fix.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"log"
+	"os"
+	"path"
+	"weed/storage"
+	"strconv"
+)
+
+func init() {
+	cmdFix.Run = runFix // break init cycle
+	cmdFix.IsDebug = cmdFix.Flag.Bool("debug", false, "enable debug mode")
+}
+
+var cmdFix = &Command{
+	UsageLine: "fix -dir=/tmp -volumeId=234",
+	Short:     "run weed tool fix on index file if corrupted",
+	Long: `Fix runs the WeedFS fix command to re-create the index .idx file.
+
+  `,
+}
+
+var (
+	fixVolumePath = cmdFix.Flag.String("dir", "/tmp", "data directory to store files")
+	fixVolumeId   = cmdFix.Flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
+)
+
+func runFix(cmd *Command, args []string) bool {
+
+	if *fixVolumeId == -1 {
+		return false
+	}
+
+	fileName := strconv.Itoa(*fixVolumeId)
+	indexFile, err := os.OpenFile(path.Join(*fixVolumePath, fileName+".idx"), os.O_WRONLY|os.O_CREATE, 0644)
+	if err != nil {
+		log.Fatalf("Create Volume Index [ERROR] %s\n", err)
+	}
+	defer indexFile.Close()
+
+	nm := storage.NewNeedleMap(indexFile)
+	defer nm.Close()
+
+	vid := storage.VolumeId(*fixVolumeId)
+	err = storage.ScanVolumeFile(*fixVolumePath, vid, func(superBlock storage.SuperBlock) error {
+		return nil
+	}, func(n *storage.Needle, offset uint32) error {
+		debug("key", n.Id, "offset", offset, "size", n.Size, "disk_size", n.DiskSize(), "gzip", n.IsGzipped())
+		if n.Size > 0 {
+			count, pe := nm.Put(n.Id, offset/storage.NeedlePaddingSize, n.Size)
+			debug("saved", count, "with error", pe)
+		} else {
+			debug("skipping deleted file ...")
+			nm.Delete(n.Id)
+		}
+		return nil
+	})
+	if err != nil {
+		log.Fatalf("Export Volume File [ERROR] %s\n", err)
+	}
+
+	return true
+}