From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from magic.merlins.org ([209.81.13.136]:55071 "EHLO mail1.merlins.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751168Ab3KQPQW (ORCPT ); Sun, 17 Nov 2013 10:16:22 -0500 Date: Sun, 17 Nov 2013 07:16:18 -0800 From: Marc MERLIN To: Russell Coker , 1i5t5.duncan@cox.net Cc: linux-btrfs@vger.kernel.org Subject: Re: NMI from btrfs cron jobs in 3.11.6 Message-ID: <20131117151618.GG9725@merlins.org> References: <201311140145.29255.russell@coker.com.au> <201311180143.51552.russell@coker.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <201311180143.51552.russell@coker.com.au> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Mon, Nov 18, 2013 at 01:43:51AM +1100, Russell Coker wrote: > On Thu, 14 Nov 2013, Duncan <1i5t5.duncan@cox.net> wrote: > > > It appears that running two scripts that create snapshots at the same > > > time as a script that removes maybe 97 snapshots causes an NMI. > > > > This is a known bug in 3.11 (and presumably earlier). Snapshot > > manipulation concurrency evidently wasn't originally well considered, and Not super important, but the bug does go farther back in time, I reported it here too some time back (although didn't hear anything back at the time). But for me I had /var/local/scr/btrfs_snaps: line 23: 26017 Segmentation fault (core dumped) /sbin/btrfs subvolume delete "$sub" with details on the BT pasted in the mail: http://permalink.gmane.org/gmane.comp.file-systems.btrfs/28770 Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ | PGP 1024R/763BE901