Hi, someone asked me if he could get access to the BTRFS defragmenter we used for our Ceph OSDs. I took a few minutes to put together a small github repository with : - the defragmenter I've been asked about (tested on 7200 rpm drives and designed to put low IO load on them), - the scrub scheduler we use to avoid load spikes on Firefly, - some basic documentation (this is still rough around the edges so you better like to read Ruby code if you want to peak at most of the logic, tune or hack these). Here it is: https://github.com/jtek/ceph-utils This is running in production for several months now and I didn't touch the code or the numerous internal tunables these scripts have for several weeks so it probably won't destroy your clusters. These scripts come without warranties though. Best regards, Lionel _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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