From 72ce5f57c1e1417ee98f74ec66a5dec08878d8c2 Mon Sep 17 00:00:00 2001
From: Simon Zolin <s.zolin@adguard.com>
Date: Thu, 2 Jul 2020 16:52:29 +0300
Subject: [PATCH] - auth: show detailed error message if Bolt couldn't
 initialize its DB Close #1846

Squashed commit of the following:

commit 34c612852b784d78191b37577324adeb0149e789
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Thu Jul 2 16:43:27 2020 +0300

    - auth: show detailed error message if Bolt couldn't initialize its DB
---
 home/auth.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/home/auth.go b/home/auth.go
index a2d6d5f2..3b524d29 100644
--- a/home/auth.go
+++ b/home/auth.go
@@ -80,7 +80,10 @@ func InitAuth(dbFilename string, users []User, sessionTTL uint32) *Auth {
 	var err error
 	a.db, err = bbolt.Open(dbFilename, 0644, nil)
 	if err != nil {
-		log.Error("Auth: bbolt.Open: %s", err)
+		log.Error("Auth: open DB: %s: %s", dbFilename, err)
+		if err.Error() == "invalid argument" {
+			log.Error("AdGuard Home cannot be initialized due to an incompatible file system.\nPlease read the explanation here: https://github.com/AdguardTeam/AdGuardHome/wiki/Getting-Started#limitations")
+		}
 		return nil
 	}
 	a.loadSessions()