On Thu, May 9, 2019 at 3:21 AM Stolte, Felix <f.stolte@xxxxxxxxxxxxx> wrote: > > Thanks for the info Patrick. We are using ceph packages from ubuntu main repo, so it will take some weeks until I can do the update. In the meantime is there anything I can do manually to decrease the number of caps hold by the backup nodes, like flushing the client cache or something like that? Is it possible to mount cephfs without caching on specific mounts? You can try dropping the cache on the clients (/proc/sys/vm/drop_caches). Don't do all of them at once. This might hang your MDS and cause it to be replaced by the monitors. This is one of the reasons the changes were made. I'm not really sure how quickly the MDS will chew through 5M cap releases. -- Patrick Donnelly, Ph.D. He / Him / His Senior Software Engineer Red Hat Sunnyvale, CA GPG: 19F28A586F808C2402351B93C3301A3E258DD79D _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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