From 6a773289e7b8aab46b2dda0b5fa89fbae022409d Mon Sep 17 00:00:00 2001
From: Nick Craig-Wood <nick@craig-wood.com>
Date: Sat, 13 Oct 2018 17:46:59 +0100
Subject: [PATCH] azureblob: work around SDK bug which causes errors for
 chunk-sized files

See https://github.com/Azure/azure-storage-blob-go/pull/75 for details
---
 backend/azureblob/azureblob.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/azureblob/azureblob.go b/backend/azureblob/azureblob.go
index e3baefa30..021040de5 100644
--- a/backend/azureblob/azureblob.go
+++ b/backend/azureblob/azureblob.go
@@ -1269,7 +1269,7 @@ func (o *Object) Update(in io.Reader, src fs.ObjectInfo, options ...fs.OpenOptio
 	}
 
 	putBlobOptions := azblob.UploadStreamToBlockBlobOptions{
-		BufferSize:      int(o.fs.opt.ChunkSize),
+		BufferSize:      int(o.fs.opt.ChunkSize) + 1, // +1 Needed until https://github.com/Azure/azure-storage-blob-go/pull/75 is merged
 		MaxBuffers:      4,
 		Metadata:        o.meta,
 		BlobHTTPHeaders: httpHeaders,