From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dkim2.fusionio.com ([66.114.96.54]:53059 "EHLO dkim2.fusionio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753018Ab3EVOXf (ORCPT ); Wed, 22 May 2013 10:23:35 -0400 Received: from mx2.fusionio.com (unknown [10.101.1.160]) by dkim2.fusionio.com (Postfix) with ESMTP id A97799A068F for ; Wed, 22 May 2013 08:23:34 -0600 (MDT) Date: Wed, 22 May 2013 10:23:32 -0400 From: Josef Bacik To: Laurent Humblet CC: "linux-btrfs@vger.kernel.org" Subject: Re: Top shows brtfs-cache-1 and brtfs-endio-met while the hard drives seem busy Message-ID: <20130522142332.GA10043@localhost.localdomain> References: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Wed, May 22, 2013 at 07:22:42AM -0600, Laurent Humblet wrote: > Hi, > > I have setup about a year ago a BTRFS RAID 1 filesystem on two 2TB > Western Digital WD20EARS hard drives and I have created subvolumes > that I mount regularly as I need them. I put mostly music, videos and > various files on them as well as some Git bare repositories for my > work files but for the last couple of weeks, there seems to be some > activity happening on the drives for a few minutes and the following > processes are showing up while this happens: brtfs-cache-1 and > brtfs-endio-met. It seems that brtfs-cache-1 is more 'busy' than > brtfs-endio-met but after a while everything seems fine again. > > Is there anything I should worry about? I will soon do a full backup > on ext4 just to make sure I don't loose anything but is there any > checks I can run on the drives to make sure everything is fine both on > a hardware standpoint and on a data integrity standoint? > Can you mount -o space_cache,inode_cache, that will get rid of the btrfs-cache-1 stuff (after the cache's have all been built up). Thanks, Josef