From bd5e5ff220b404f5976a5222977ed92f621c1301 Mon Sep 17 00:00:00 2001
From: Ed McClanahan <ed@swiftstack.com>
Date: Fri, 21 Feb 2020 15:13:40 -0800
Subject: [PATCH] Fix attr's returns when doing `truncate --size` to extend a
 file

---
 pfsagentd/fission.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/pfsagentd/fission.go b/pfsagentd/fission.go
index 2a0542f09..be146d738 100644
--- a/pfsagentd/fission.go
+++ b/pfsagentd/fission.go
@@ -346,6 +346,7 @@ func (dummy *globalsStruct) DoSetAttr(inHeader *fission.InHeader, setAttrIn *fis
 		chownRequest             *jrpcfs.ChownRequest
 		chunkedPutContext        *chunkedPutContextStruct
 		chunkedPutContextElement *list.Element
+		chunkedPutContextLast    *chunkedPutContextStruct
 		err                      error
 		fileInode                *fileInodeStruct
 		getStatReply             *jrpcfs.StatStruct
@@ -459,6 +460,8 @@ func (dummy *globalsStruct) DoSetAttr(inHeader *fission.InHeader, setAttrIn *fis
 
 		pruneExtentMap(fileInode.extentMap, setAttrIn.Size)
 
+		chunkedPutContextLast = nil
+
 		chunkedPutContextElement = fileInode.chunkedPutList.Front()
 
 		for nil != chunkedPutContextElement {
@@ -467,6 +470,8 @@ func (dummy *globalsStruct) DoSetAttr(inHeader *fission.InHeader, setAttrIn *fis
 				logFatalf("chunkedPutContextElement.Value.(*chunkedPutContextStruct) returned !ok")
 			}
 
+			chunkedPutContextLast = chunkedPutContext
+
 			if chunkedPutContext.fileSize > setAttrIn.Size {
 				chunkedPutContext.fileSize = setAttrIn.Size
 			}
@@ -476,6 +481,16 @@ func (dummy *globalsStruct) DoSetAttr(inHeader *fission.InHeader, setAttrIn *fis
 			chunkedPutContextElement = chunkedPutContextElement.Next()
 		}
 
+		if nil == chunkedPutContextLast {
+			if fileInode.extentMapFileSize < setAttrIn.Size {
+				fileInode.extentMapFileSize = setAttrIn.Size
+			}
+		} else {
+			if chunkedPutContext.fileSize < setAttrIn.Size {
+				chunkedPutContext.fileSize = setAttrIn.Size
+			}
+		}
+
 		resizeRequest = &jrpcfs.ResizeRequest{
 			InodeHandle: jrpcfs.InodeHandle{
 				MountID:     globals.mountID,