From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: [md PATCH 0/4] Improve blktrace tracing of md. Date: Mon, 14 Nov 2016 16:30:20 +1100 Message-ID: <147910131504.27168.6566119701315109161.stgit@noble> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: Shaohua Li Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids blktrace on md devices reports when a request is queued and when it is split, but request completion and the mapping to subordinate devices is not reported. So add that, as well some some events when IO is delayed for one reason or another (eg. bitmap updates etc). --- NeilBrown (4): md: add block tracing for bio_remapping md: add bio completion tracing for raid1/raid10 md/bitmap: add blktrace event for writes to the bitmap. md/raid1,raid10: add blktrace records when IO is delayed. drivers/md/bitmap.c | 11 ++++++++++- drivers/md/linear.c | 8 +++++++- drivers/md/raid0.c | 8 +++++++- drivers/md/raid1.c | 42 +++++++++++++++++++++++++++++++++++++++--- drivers/md/raid10.c | 38 ++++++++++++++++++++++++++++++++++++-- 5 files changed, 99 insertions(+), 8 deletions(-) -- Signature