From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:41130 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750729AbaJQUcs (ORCPT ); Fri, 17 Oct 2014 16:32:48 -0400 Message-ID: <54417CEB.9020003@fb.com> Date: Fri, 17 Oct 2014 16:32:43 -0400 From: Josef Bacik MIME-Version: 1.0 To: Leonidas Spyropoulos , "linux-btrfs@vger.kernel.org" Subject: Re: Ccache on btrfs References: <2700CF0B-F340-44F7-A4D6-0C5FF05CCD81@gmail.com> <20141017192438.GA20983@sune> In-Reply-To: <20141017192438.GA20983@sune> Content-Type: text/plain; charset="windows-1252"; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 10/17/2014 03:24 PM, Leonidas Spyropoulos wrote: > On 17/10/14, Timofey Titovets wrote: >> i use ccache and often compile linux from git, >> I don't catch any errors with it. >> > Interesting, I re-enabled ccache on an ext4 partition (HDD) and worked > fine. So I suspect it's something to do with btrfs and SSD. My mount > options are: > /dev/sda3 on /home type btrfs (rw,relatime,ssd,discard,nospace_cache) > > The problem is that I can't get hold of kernel panic since it's not in > the journal [1]. I don't know a way to get hold of the kernel panic log > to help anyway. > > What would it be useful to debug it? Setup netconsole, you can set it to go to a different box and then on that box run nc -lu -p 514 > out.txt and then reproduce the panic. If you are using fedora you can install netconsole and edit /etc/sysconfig/netconsole and set SYSLOGADDR=. Thanks, Josef