From 001750c2391373c5d50abe8313167d84909017c6 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Fri, 8 Oct 2021 19:34:38 +0300
Subject: [PATCH] lib/storage: fix unaligned access on 32-bit architectures.

The bug has been introduced at a171916ef5664690c9b596fe73b095aa75fa5d5c
---
 docs/CHANGELOG.md      | 2 ++
 lib/storage/storage.go | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 5de5e5aae..73447c7cb 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -6,6 +6,8 @@ sort: 15
 
 ## tip
 
+BUGFIX: vmstorage: fix `unaligned 64-bit atomic operation` panic on 32-bit architectures (arm and 386). The panic has been introduced in v1.67.0
+
 
 ## [v1.67.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.67.0)
 
diff --git a/lib/storage/storage.go b/lib/storage/storage.go
index 6b9f6d4d2..68f64558c 100644
--- a/lib/storage/storage.go
+++ b/lib/storage/storage.go
@@ -57,8 +57,6 @@ type Storage struct {
 	hourlySeriesLimitRowsDropped uint64
 	dailySeriesLimitRowsDropped  uint64
 
-	isReadOnly uint32
-
 	path           string
 	cachePath      string
 	retentionMsecs int64
@@ -137,6 +135,8 @@ type Storage struct {
 	// metricIDs, since it usually requires 1 bit per deleted metricID.
 	deletedMetricIDs           atomic.Value
 	deletedMetricIDsUpdateLock sync.Mutex
+
+	isReadOnly uint32
 }
 
 // OpenStorage opens storage on the given path with the given retentionMsecs.