From 37134e42d45e91e21d65f370fbbafb9c9c0f631e Mon Sep 17 00:00:00 2001
From: Harshavardhana <harsha@minio.io>
Date: Wed, 15 Feb 2023 07:12:48 -0800
Subject: [PATCH] ignore io.EOF, io.ErrUnexpectedEOF on xl.meta reads in
 WalkDir() (#16625)

---
 cmd/api-errors.go     | 3 ++-
 cmd/metacache-walk.go | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/cmd/api-errors.go b/cmd/api-errors.go
index 3adcc1854..6ed791268 100644
--- a/cmd/api-errors.go
+++ b/cmd/api-errors.go
@@ -2186,7 +2186,8 @@ func toAPIErrorCode(ctx context.Context, err error) (apiErr APIErrorCode) {
 		apiErr = ErrTransitionStorageClassNotFoundError
 	case InvalidObjectState:
 		apiErr = ErrInvalidObjectState
-
+	case PreConditionFailed:
+		apiErr = ErrPreconditionFailed
 	case BucketQuotaExceeded:
 		apiErr = ErrAdminBucketQuotaExceeded
 	case *event.ErrInvalidEventName:
diff --git a/cmd/metacache-walk.go b/cmd/metacache-walk.go
index dadf67ad5..d1abb15a4 100644
--- a/cmd/metacache-walk.go
+++ b/cmd/metacache-walk.go
@@ -324,7 +324,12 @@ func (s *xlStorage) WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writ
 			case isSysErrNotDir(err):
 				// skip
 			default:
-				logger.LogIf(ctx, err)
+				// It is totally possible that xl.meta was overwritten
+				// while being concurrently listed at the same time in
+				// such scenarios the 'xl.meta' might get truncated
+				if !IsErrIgnored(err, io.EOF, io.ErrUnexpectedEOF) {
+					logger.LogIf(ctx, err)
+				}
 			}
 		}