Den ons 24 mars 2021 kl 14:55 skrev Boris Behrens <bb@xxxxxxxxx>: > > Oh cool. Thanks :) > > How do I find the correct weight after it is added? > For the current process I just check the other OSDs but this might be a question that someone will raise. > > I could imagine that I need to adjust the ceph-gentle-reweight's target weight to the correct one. I look at "ceph osd df tree" for the size, [...] 287 hdd 11.00000 1.00000 11 TiB 81 GiB 80 GiB 1.3 MiB 1.7 GiB 11 TiB 0.73 1.03 117 osd.287 295 ssd 3.64000 1.00000 3.6 TiB 9.9 GiB 87 MiB 2.0 GiB 7.9 GiB 3.6 TiB 0.27 0.38 71 osd.295 the 11.0000 should somewhat match the 11TB detected size of the hdd, as crush weight 3.64 is matching the 3.6TB size of the ssd. So when you add with lowered weight, you need to check what size you have on the added drive(s). From there we have small scripts that take a lot of newly added drives and raise the crush weight of them at the same time (with norebalance before changing them, and unset'ing it after all drives have gotten slightly bigger crush weight) to allow for parallelism, while not going too wild on the amount of changes per round (so the cluster can be HEALTH_OK for a moment in between each step). -- May the most significant bit of your life be positive. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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