From f567777d6464efdb0000eac527755a15a589930c Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 15 Apr 2019 21:58:43 -0700
Subject: [PATCH] volume: fix needle checking for deleted needles

---
 weed/storage/volume_read_write.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index 93f4ed1c1..363835eb9 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -21,11 +21,11 @@ func (v *Volume) isFileUnchanged(n *Needle) bool {
 		return false
 	}
 	nv, ok := v.nm.Get(n.Id)
-	if ok && !nv.Offset.IsZero() {
+	if ok && !nv.Offset.IsZero() && nv.Size != TombstoneFileSize {
 		oldNeedle := new(Needle)
 		err := oldNeedle.ReadData(v.dataFile, nv.Offset.ToAcutalOffset(), nv.Size, v.Version())
 		if err != nil {
-			glog.V(0).Infof("Failed to check updated file %v", err)
+			glog.V(0).Infof("Failed to check updated file at offset %d size %d: %v", nv.Offset.ToAcutalOffset(), nv.Size, err)
 			return false
 		}
 		if oldNeedle.Checksum == n.Checksum && bytes.Equal(oldNeedle.Data, n.Data) {