Hi Marc, We mount cephfs using FUSE on all 10 nodes of our cluster, and provided that we limit bluestore memory use, find it to be reliable*. bluestore_cache_size = 209715200 bluestore_cache_kv_max = 134217728 Without the above tuning, we get OOM errors. As others will confirm, the FUSE client is more stable than the kernel client, but slower. ta ta Jake * We have 128GB of ram per 45 x 8TB Drive OSD node, way below recommendations (1GB RAM per TB storage); our OOM issues are completely predictable... On 29/08/18 13:25, Marc Roos wrote: > > > I have 3 node test cluster and I would like to expand this with a 4th > node that is currently mounting the cephfs and rsync's backups to it. I > can remember reading something about that you could create a deadlock > situation doing this. > > What are the risks I would be taking if I would be doing this? > > > > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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