From cdeb8df04e2abd67f3ed68b8500d8dad1dbd7c43 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Mon, 8 May 2023 11:51:58 +0200
Subject: [dnbd3-proxy-mode] Dynamic deletion delay based on RTC

If the proxy is being started up mid-day, it might be undesired to have
it wait for 18 hours before deleting old images. This might mean we
don't have a good idea which image has been unused longest, but it's
better to delete *some* unused image than just not replicating any
images at all.
---
 .../data/opt/openslx/scripts/systemd-setup_dnbd3_proxy   | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

(limited to 'core/modules')

diff --git a/core/modules/dnbd3-proxy-mode/data/opt/openslx/scripts/systemd-setup_dnbd3_proxy b/core/modules/dnbd3-proxy-mode/data/opt/openslx/scripts/systemd-setup_dnbd3_proxy
index 04cc9ba4..96d62ae4 100755
--- a/core/modules/dnbd3-proxy-mode/data/opt/openslx/scripts/systemd-setup_dnbd3_proxy
+++ b/core/modules/dnbd3-proxy-mode/data/opt/openslx/scripts/systemd-setup_dnbd3_proxy
@@ -160,7 +160,19 @@ else
 	DNBD3_BGR="false"
 	DNBD3_BGR_MIN_CLIENTS=0
 	DNBD3_LOOKUP="false"
-	DNBD3_AUTOFREE="18h"
+	# Delay deletion only if we're booted early
+	hour="$( date +%_H )"
+	hour="${hour# }"
+	if [ "$hour" -lt 7 ]; then
+		DNBD3_AUTOFREE=$(( 7 - hour ))
+	else
+		DNBD3_AUTOFREE=0
+	fi
+	# Wait some more on Sunday
+	if [ "$( date +%w )" = 0 ]; then
+		DNBD3_AUTOFREE=$(( DNBD3_AUTOFREE + 18 ))
+	fi
+
 	DNBD3_SERVER_PENALTY=3000 # no BGR = don't like other servers connecting so much
 	if [ -n "${SLX_DNBD3_BGR}" ]; then
 		DNBD3_BGR="true"
@@ -244,7 +256,7 @@ removeMissingImages=false
 uplinkTimeout=5000
 clientTimeout=15000
 pretendClient=${DNBD3_PRETEND_CLIENT}
-autoFreeDiskSpaceDelay=${DNBD3_AUTOFREE}
+autoFreeDiskSpaceDelay=${DNBD3_AUTOFREE}h
 
 [limits]
 maxPayload=10M
-- 
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