From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-btrfs-owner@vger.kernel.org>
Received: from mail2.linuxsystems.it ([2.119.245.46]:33272 "EHLO
	mail2.linuxsystems.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751510AbcEMMKK convert rfc822-to-8bit (ORCPT
	<rfc822;linux-btrfs@vger.kernel.org>);
	Fri, 13 May 2016 08:10:10 -0400
From: =?iso-8859-1?Q?Niccol=F2_Belli?= <darkbasic@linuxsystems.it>
To: "Austin S. Hemmelgarn" <ahferroin7@gmail.com>
Cc: <linux-btrfs@vger.kernel.org>, Clemens Eisserer <linuxhippy@gmail.com>,
        Patrik Lundquist <patrik.lundquist@gmail.com>,
        Chris Murphy <lists@colorremedies.com>,
        Qu Wenruo <quwenruo@cn.fujitsu.com>,
        Omar Sandoval <osandov@osandov.com>,
        Zygo Blaxell <ce3g8jdj@umail.furryterror.org>, <1i5t5.duncan@cox.net>
Subject: Re: btrfs ate my data in just two days, after a fresh install. ram =?iso-8859-1?Q?and_disk_are_ok._it_still_mounts,_but_I_cannot_repair?=
Date: Fri, 13 May 2016 14:10:04 +0200
MIME-Version: 1.0
Message-ID: <218bfc1b-a136-45cf-b5d0-8d4c5937efbf@linuxsystems.it>
In-Reply-To: <994b4fa5-c7ef-27e1-2fc2-386ab62a16c0@gmail.com>
References: <3bf4a554-e3b8-44e2-b8e7-d08889dcffed@linuxsystems.it>
 <CAJCQCtRAqxREr8ToorSkbsnYKKk_NPy+1oSHP6WMOnpLe=9T1g@mail.gmail.com>
 <c9bde2c9-c0f3-4bd2-a9ac-81fe0250edcc@linuxsystems.it>
 <20160505174854.GA1012@vader.dhcp.thefacebook.com>
 <585760e0-7d18-4fa0-9974-62a3d7561aee@linuxsystems.it>
 <2cd5aca36f853f3c9cf1d46c2f133aa3@linuxsystems.it>
 <CAFvQSYTQ1yZqPYyv0dmd+JuHRWfKm-RtZLdbKXQeHiWMthnyLw@mail.gmail.com>
 <f1dd07efb34a0a110f62566979530944@linuxsystems.it>
 <799cf552-4612-56c5-b44d-59458119e2b0@gmail.com>
 <52f0c710-d695-443d-b6d5-266e3db634f8@linuxsystems.it>
 <20160509162940.GC15597@hungrycats.org>
 <c5fa6a35-f6bd-4546-8297-7f6225696157@linuxsystems.it>
 <a3a4e412-221d-c12b-284b-af53e4738211@gmail.com>
 <ef2e08cf-587c-4569-9600-9ad7bc45aab2@linuxsystems.it>
 <994b4fa5-c7ef-27e1-2fc2-386ab62a16c0@gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Sender: linux-btrfs-owner@vger.kernel.org
List-ID: <linux-btrfs.vger.kernel.org>

On venerdì 13 maggio 2016 13:35:01 CEST, Austin S. Hemmelgarn wrote:
> The fact that you're getting an OOPS involving core kernel 
> threads (kswapd) is a pretty good indication that either there's 
> a bug elsewhere in the kernel, or that something is wrong with 
> your hardware.  it's really difficult to be certain if you don't 
> have a reliable test case though.

Talking about reliable test cases, I forgot to say that I definitely found 
an interesting one. It doesn't lead to OOPS but perhaps something even more 
interesting. While running countless stress tests I tried running some 
games to stress the system in different ways. I chosed openmw (an open 
source engine for Morrowind) and I played it for a while on my second 
external monitor (while I watched at some monitoring tools on my first 
monitor). I noticed that after playing a while I *always* lose internet 
connection (I use an USB3 Gigabit Ethernet adapter). This isn't the only 
thing which happens: even if the game keeps running flawlessly and the 
system *seems* to work fine (I can drag windows, open the terminal...) lots 
of commands simply stall (for example mounting a partition, unmounting it, 
rebooting...). I can reliably reproduce it, it ALWAYS happens.

Niccolò