Hello, Can someone explain the meaning of osd_disk_thread_ioprio_priority. I'm reading the definition from this page: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/1.3/html/configuration_guide/osd_configuration_reference it says: "It sets the ioprio_set(2) I/O scheduling priority of the disk thread ranging from 0 (highest) to 7 (lowest)." What is the so called disk thread? Then I found documents using both extreme values (0 and 7) for achieving the same stuff make the scrubbing low priority. https://ceph.com/geen-categorie/ceph-reduce-osd-scrub-priority/ and http://dachary.org/?p=3268 are using the value 7 for reducing the priority of scrub, while here: http://ceph-users.ceph.narkive.com/AMMP3r5s/osd-scrub-sleep-osd-scrub-chunk-min-max and https://indico.cern.ch/event/588794/contributions/2374222/attachments/1383112/2103509/Configuring_Ceph.pdf the value 0 is used. Now I am confused .... :( Can somebody bring some light here? Thank you, Laszlo _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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