feat(vhd-lib): retry on remote internal error when writing a chunk

packages/vhd-lib/Vhd/VhdDirectory.js

@@ -5,6 +5,7 @@ const { test, set: setBitmap } = require('../_bitmap')
 const { VhdAbstract } = require('./VhdAbstract')
 const assert = require('assert')
 const promisify = require('promise-toolbox/promisify')
+const pRetry = require('promise-toolbox/retry.js')
 const zlib = require('zlib')
 
 const { debug } = createLogger('vhd-lib:VhdDirectory')
@@ -162,7 +163,13 @@ exports.VhdDirectory = class VhdDirectory extends VhdAbstract {
     )
 
     const compressed = await this.#compressor.compress(buffer)
-    return this._handler.outputFile(this._getChunkPath(partName), compressed, this._opts)
+    return pRetry(async () => this._handler.outputFile(this._getChunkPath(partName), compressed, this._opts), {
+      tries: 5,
+      when: e => e.code === 'InternalError',
+      onRetry: () => {
+        warn('retrying writechunk')
+      },
+    })
   }
 
   // put block in subdirectories to limit impact when doing directory listing