From e839c971884fd15025326476cf99181941c9af4d Mon Sep 17 00:00:00 2001
From: Dmitry Rodionov <dmitry@neon.tech>
Date: Fri, 9 Jun 2023 22:10:37 +0300
Subject: [PATCH] fix uninit glitch

cherry-picked from https://github.com/neondatabase/neon/pull/4458
---
 pageserver/src/tenant.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/pageserver/src/tenant.rs b/pageserver/src/tenant.rs
index 1ca1be7a64..f318090712 100644
--- a/pageserver/src/tenant.rs
+++ b/pageserver/src/tenant.rs
@@ -1054,6 +1054,13 @@ impl Tenant {
                         );
                     }
                 } else if is_uninit_mark(&timeline_dir) {
+                    if !timeline_dir.exists() {
+                        warn!(
+                            "Timeline dir entry become invalid: {}",
+                            timeline_dir.display()
+                        );
+                        continue;
+                    }
                     let timeline_uninit_mark_file = &timeline_dir;
                     info!(
                         "Found an uninit mark file {}, removing the timeline and its uninit mark",
@@ -1077,6 +1084,13 @@ impl Tenant {
                         error!("Failed to clean up uninit marked timeline: {e:?}");
                     }
                 } else {
+                    if !timeline_dir.exists() {
+                        warn!(
+                            "Timeline dir entry become invalid: {}",
+                            timeline_dir.display()
+                        );
+                        continue;
+                    }
                     let timeline_id = timeline_dir
                         .file_name()
                         .and_then(OsStr::to_str)