From 89de29529309ea1d5d93017ddf588d1fb3049082 Mon Sep 17 00:00:00 2001
From: Mehran Kholdi <semekh@hamravesh.com>
Date: Sat, 26 Jun 2021 01:18:00 +0430
Subject: [PATCH] Fix race condition by making the scrub function idempotent

Under certain situtations, a race condition could lead to pvc deletion
tasks getting stuck in a failing state.
---
 remote.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/remote.py b/remote.py
index 6e3f138..56436dc 100644
--- a/remote.py
+++ b/remote.py
@@ -6,6 +6,10 @@ def scrub(volume_id):
     import time
     import rawfile_util
 
+    img_dir = rawfile_util.img_dir(volume_id)
+    if not img_dir.exists():
+        return
+
     now = time.time()
     deleted_at = now
     gc_at = now  # TODO: GC sensitive PVCs later