Hi, Jens On Sun, Feb 2, 2020 at 9:37 PM Cong Wang <xiyou.wangcong@xxxxxxxxx> wrote: > > Currently, rasdaemon uses the existing tracepoint block_rq_complete > and filters out non-error cases in order to capture block disk errors. > > But there are a few problems with this approach: > > 1. Even kernel trace filter could do the filtering work, there is > still some overhead after we enable this tracepoint. > > 2. The filter is merely based on errno, which does not align with kernel > logic to check the errors for print_req_error(). > > 3. block_rq_complete only provides dev major and minor to identify > the block device, it is not convenient to use in user-space. > > So introduce a new tracepoint block_rq_error just for the error case > and provides the device name for convenience too. With this patch, > rasdaemon could switch to block_rq_error. > > Cc: Jens Axboe <axboe@xxxxxxxxx> > Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> > Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx> Can you take this patch? Thanks!
