From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751691Ab2LQI1k (ORCPT ); Mon, 17 Dec 2012 03:27:40 -0500 Received: from mail-ee0-f46.google.com ([74.125.83.46]:65374 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751366Ab2LQI1i (ORCPT ); Mon, 17 Dec 2012 03:27:38 -0500 From: Guangliang Zhao To: linux-kernel@vger.kernel.org, dm-devel@redhat.com Cc: lucienchao@gmail.com Subject: [PATCH 3/3 v2] dm raid1: add interface to get resync speed Date: Mon, 17 Dec 2012 16:26:37 +0800 Message-Id: <1355732797-7233-4-git-send-email-gzhao@suse.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1355732797-7233-1-git-send-email-gzhao@suse.com> References: <1355732797-7233-1-git-send-email-gzhao@suse.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add ioctl to get resync speed, userspace tool is dmsetup status: dmsetup status $device e.g. dmsetup status /dev/dm-2 Signed-off-by: Guangliang Zhao --- drivers/md/dm-raid1.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 3cdad37..68081ff 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -1427,6 +1427,20 @@ static char device_status_char(struct mirror *m) (test_bit(DM_RAID1_READ_ERROR, &(m->error_type))) ? 'R' : 'U'; } +/* + * get speed from ratelimit_state + */ +static unsigned int rlimit_to_speed(struct mirror_set *ms, + struct ratelimit_state *rl) +{ + sector_t region_size = dm_rh_get_region_size(ms->rh); + unsigned int time, burst; + + time = rl->interval / HZ; + burst = (rl->burst * region_size) >> 1; + + return burst / time; +} static int mirror_status(struct dm_target *ti, status_type_t type, char *result, unsigned int maxlen) @@ -1445,9 +1459,10 @@ static int mirror_status(struct dm_target *ti, status_type_t type, } buffer[m] = '\0'; - DMEMIT("%llu/%llu 1 %s ", + DMEMIT("%llu/%llu 1 %u 1 %s ", (unsigned long long)log->type->get_sync_count(log), - (unsigned long long)ms->nr_regions, buffer); + (unsigned long long)ms->nr_regions, + rlimit_to_speed(ms, &ms->ms_rlimit), buffer); sz += log->type->status(log, type, result+sz, maxlen-sz); -- 1.7.10.4