Thanks~
I worked on 12.2.4. And I read about the implementation of scrub
preempt in latest version. The scrub preempt happens after scrub
dequeue so it can not slove my problem.
David Zafman <dzafman@xxxxxxxxxx> 于2018年10月31日周三 下午11:04写道：
>
>
> What release are you working on? Have you seen the latest code in
> master that allows client operations to preempt scrub?
>
>
> bool PG::write_blocked_by_scrub(const hobject_t& soid)
> {
> if (soid < scrubber.start || soid >= scrubber.end) {
> return false;
> }
> if (scrub_can_preempt) {
> if (!scrub_preempted) {
> dout(10) << __func__ << " " << soid << " preempted" << dendl;
> scrub_preempted = true;
> } else {
> dout(10) << __func__ << " " << soid << " already preempted" << dendl;
> }
> return false;
> }
> return true;
> }
>
> David
>
>
> On 10/31/18 3:12 AM, 韦皓诚 wrote:
> > Hi~
> > We have make some modifications to osd queue so that Scrub would stay
> > in queue when client_op is busy. But this brings a problem, some write
> > request would be blocked by the scrub in queue too long time. So we
> > want to block a write request only when the scrub out of queue. The
> > question is, is there any accident will happen to it?
>
