From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.virtall.com ([178.63.195.102]:43027 "EHLO mail.virtall.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750797Ab3JTO56 (ORCPT ); Sun, 20 Oct 2013 10:57:58 -0400 Date: Sun, 20 Oct 2013 23:51:18 +0900 From: Tomasz Chmielewski To: "linux-btrfs@vger.kernel.org" , jgoerzen@complete.org Subject: Re: Lots of trouble hanging when rm files with many extents Message-ID: <20131020235118.3a918ba3@virtall.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-btrfs-owner@vger.kernel.org List-ID: > but I am not sure if that was the right thing to do. This is > producing OOM issues and leading to system crashes (including > eventual panics) with such alarming frequency that I wonder if > perhaps there is something different about my setup than others. FYI, I'm seeing similar / random hangs on systems with btrfs, compress-force=zlib, qgroups enabled. The systems have 32 GB RAM. Sometimes, I can review old logs (after force reboot) and see OOM, allocation failures and such. The scenario there are snapshots, rsync with --inplace flag, which can fragment files a lot. I'll do some more tests with lots of extents to see if it's reproducible here as well. -- Tomasz Chmielewski http://wpkg.org