Hello everyone. We've been having issues with Deep Scrubs interfering with Ceph-backed VM performance. Hardware upgrade is unfortunately out of the question for now. After much experimenting, asking and searching we've settled on cutting the scrubs during the weekday hours which is when the deploys happen to a couple of hours a night and letting the scrubs run for almost the entire day during the weekend to catch up. There are still missed scrubs by the EOW but i manually trigger them. It's not great but it works. The way we do this is a cron job which changes the schedule on Friday night and sets it back on Sunday. For example Mon-Fri deep scrub 1am-4am Sat-Sun deep scrub 1am-11pm The first question is there's nothing else i assume we can tweak? The consecutive scrubs are already set to one, we can't upgrade the hardware, we tried various scrub windows and just can't fit them in during the weekdays without the cron job hack. Is there something obvious we missed? The second question is, is there really no more granular schedule then hours during which the deep scrub can run? The cron feels like a dirty hack. There's the "osd_scrub_begin/end_week_day" setting but that doesn't do what we need. We want to do some scrubs during the week and the rest during the weekend. Thanks.