I have already set mds log max segments to 256 and in 13.2.5 mds log max expiring is not needed, since https://github.com/ceph/ceph/pull/18624
Serkan Çoban <cobanser...@gmail.com> 于2019年4月28日周日 下午9:03写道： > In this thread [1] it is suggested to bump up > mds log max segments = 200 > mds log max expiring = 150 > > 1- > http://lists.ceph.com/pipermail/ceph-users-ceph.com/2017-December/023490.html > > On Sun, Apr 28, 2019 at 2:58 PM Winger Cheng <winger...@gmail.com> wrote: > > > > Hello Everyone, > > > > I have a CephFS cluster which has 4 node, every node has 5 HDD and 1 > SSD. > > I use bluestore and place the wal and db on ssd. also we get 50GB on > each ssd for a metadata pool. > > My workload is write 10 million file to 200 dirs at 200 client. > > > > When I use 1 mds I get 4k ops and everything works ok > > > > When I use 2 mds, I get 3k ops for both mds but mds log trim very slow , > it always behind on trimming, > > and my metadata pool be full very quickly since most of space of > metadata pool is used by mds log. > > But when I stop writing , all the mds log can be trimmed in 5 minutes. > > > > I'm using Ceph 13.2.5 Cephfs with kernel client , every client kernel > version is 4.14.35 > > > > What's wrong ? > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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