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c93d1f53be
If the file has partial data written but not the full 8192 bytes, then the server will be unable to load that region file... I don't know why mojang only checks for 4096, when anything less than 8192 is a crash. But to be safe, it will attempt to back up the file.
41 lines
1.8 KiB
Diff
41 lines
1.8 KiB
Diff
From 791918c4893844b0cb19a6cc9a4a717bd83a1509 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 11 Aug 2018 00:49:20 -0400
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Subject: [PATCH] Detect and repair corrupt Region Files
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If the file has partial data written but not the full 8192 bytes,
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then the server will be unable to load that region file...
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I don't know why mojang only checks for 4096, when anything less than 8192 is a crash.
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But to be safe, it will attempt to back up the file.
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diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
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index cba23731..07039223 100644
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--- a/src/main/java/net/minecraft/server/RegionFile.java
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+++ b/src/main/java/net/minecraft/server/RegionFile.java
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@@ -41,7 +41,20 @@ public class RegionFile {
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}
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this.c = new RandomAccessFile(file, "rw");
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- if (this.c.length() < 4096L) {
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+ // Paper start - detect and fix incomplete headers
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+ long length = this.c.length();
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+ if (length < 8192 && length > 0) {
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+ File corrupt = new File(file.getParentFile(), file.getName() + ".bak");
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+ org.apache.logging.log4j.Logger logger = org.apache.logging.log4j.LogManager.getLogger();
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+ logger.error("Region file " + file + " was incomplete. Backing up to " + corrupt + " and repairing");
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+ try {
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+ java.nio.file.Files.copy(file.toPath(), corrupt.toPath());
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+ } catch (IOException e) {
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+ logger.error("Error backing up corrupt file", e);
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+ }
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+ }
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+ if (length < 8192L) {
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+ // Paper end
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this.c.write(RegionFile.a);
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this.c.write(RegionFile.a);
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this.g += 8192;
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--
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2.18.0
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