The minimum value for osd_deep_scrub_interval is osd_scrub_min_interval, and it wouldn't be advisable to go that low.
I can't find the documentation, but basically Ceph will attempt a scrub sometime between osd_scrub_min_interval and osd_scrub_max_interval. If the PG hasn't been deep-scrubbed in the last osd_deep_scrub_interval seconds, it does a deep-scrub instead. So if you set osd_deep_scrub_interval to osd_scrub_min_interval, you'll never scrub your PGs, you'll only deep-scrub. Obviously, you can lower the two scrub intervals too. As Loïc says, test it well. I find when I'm playing with these values, I use injectargs to find a good value, then persist that value in the ceph.conf. On Fri, Nov 14, 2014 at 3:16 AM, Loic Dachary <l...@dachary.org> wrote: > Hi, > > On 14/11/2014 12:11, Mallikarjun Biradar wrote: > > Hi, > > > > Default deep scrub interval is once per week, which we can set using > osd_deep_scrub_interval parameter. > > > > Whether can we reduce it to less than a week or minimum interval is one > week? > > You can reduce it to a shorter period. It is worth testing the impact on > disk IO before going to production with shorter intervals though. > > Cheers > > > > > -Thanks & regards, > > Mallikarjun Biradar > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > -- > Loïc Dachary, Artisan Logiciel Libre > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
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