From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f53.google.com ([74.125.83.53]:33289 "EHLO mail-pg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964809AbdGTRcQ (ORCPT ); Thu, 20 Jul 2017 13:32:16 -0400 Received: by mail-pg0-f53.google.com with SMTP id k14so17749115pgr.0 for ; Thu, 20 Jul 2017 10:32:16 -0700 (PDT) Date: Thu, 20 Jul 2017 10:32:14 -0700 From: Omar Sandoval To: Christoph Anton Mitterer Cc: linux-btrfs , Martin Raiber Subject: Re: strange No space left on device issues Message-ID: <20170720173214.GA29924@vader.DHCP.thefacebook.com> References: <1500561549.7266.1.camel@scientia.net> <0102015d6083ffde-e6d15fd5-6e66-41a0-9ddf-af163c96ebd8-000000@eu-west-1.amazonses.com> <1500564013.7266.8.camel@scientia.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1500564013.7266.8.camel@scientia.net> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Thu, Jul 20, 2017 at 05:20:13PM +0200, Christoph Anton Mitterer wrote: > On Thu, 2017-07-20 at 15:00 +0000, Martin Raiber wrote: > > It would be interesting if lowering the dirty ratio is a viable > > work-around (sysctl vm.dirty_background_bytes=314572800 && sysctl > > vm.dirty_bytes=1258291200). > > > > Regards, > > Martin > > I took away a trailing 0 for each of them... and then it goes through > without error.... > > sysctl vm.dirty_bytes=125829120 > vm.dirty_bytes = 125829120 > sysctl vm.dirty_background_bytes=31457280 > vm.dirty_background_bytes = 31457280 > > > But what does that mean now... could there be still any corruptions? > And do you need to permanently set the value (until this is fixed in > stable), or is this just necessary when I had this large copying > operation? > > > Cheers, > Chris. Could you try 4.12? If that doesn't work, could you please also try https://patchwork.kernel.org/patch/9829593/?