From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753342AbeCVPDG (ORCPT ); Thu, 22 Mar 2018 11:03:06 -0400 Received: from mx2.suse.de ([195.135.220.15]:48691 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751899AbeCVPDE (ORCPT ); Thu, 22 Mar 2018 11:03:04 -0400 Date: Thu, 22 Mar 2018 16:00:37 +0100 From: David Sterba To: Andiry Xu Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, dan.j.williams@intel.com, andy.rudoff@intel.com, coughlan@redhat.com, swanson@cs.ucsd.edu, david@fromorbit.com, jack@suse.com, swhiteho@redhat.com, miklos@szeredi.hu, andiry.xu@gmail.com, Andiry Xu Subject: Re: [RFC v2 83/83] Sysfs support. Message-ID: <20180322150037.GD6955@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Andiry Xu , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, dan.j.williams@intel.com, andy.rudoff@intel.com, coughlan@redhat.com, swanson@cs.ucsd.edu, david@fromorbit.com, jack@suse.com, swhiteho@redhat.com, miklos@szeredi.hu, andiry.xu@gmail.com, Andiry Xu References: <1520705944-6723-1-git-send-email-jix024@eng.ucsd.edu> <1520705944-6723-84-git-send-email-jix024@eng.ucsd.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1520705944-6723-84-git-send-email-jix024@eng.ucsd.edu> User-Agent: Mutt/1.5.23.1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Mar 10, 2018 at 10:19:04AM -0800, Andiry Xu wrote: > From: Andiry Xu > > Sysfs support allows user to get/post information of running NOVA instance. > After mount, NOVA creates four entries under proc directory > /proc/fs/nova/pmem#/: > > timing_stats IO_stats allocator gc > > Show NOVA file operation timing statistics: > cat /proc/fs/NOVA/pmem#/timing_stats > > Clear timing statistics: > echo 1 > /proc/fs/NOVA/pmem#/timing_stats > > Show NOVA I/O statistics: > cat /proc/fs/NOVA/pmem#/IO_stats > > Clear I/O statistics: > echo 1 > /proc/fs/NOVA/pmem#/IO_stats > > Show NOVA allocator information: > cat /proc/fs/NOVA/pmem#/allocator > > Manual garbage collection: > echo #inode_number > /proc/fs/NOVA/pmem#/gc IIRC no new entries should be added to /proc, /sys is supposed to be used. I can't find it documented though, so you'd better check with sysfs people.