Hi, You can make use of the upmap so you do not need to rebalance the entire crush map every time you change the weight. https://docs.ceph.com/en/latest/rados/operations/upmap/ Hope it helps, Ansgar Kristof Coucke <kristof.coucke@xxxxxxxxx> schrieb am Mi., 21. Okt. 2020, 13:29: > Hi, > > I have a cluster with 182 OSDs, this has been expanded towards 282 OSDs. > Some disks were near full. > The new disks have been added with initial weight = 0. > The original plan was to increase this slowly towards their full weight > using the gentle reweight script. However, this is going way too slow and > I'm also having issues now with "backfill_toofull". > Can I just add all the OSDs with their full weight, or will I get a lot of > issues when I'm doing that? > I know that a lot of PGs will have to be replaced, but increasing the > weight slowly will take a year at the current speed. I'm already playing > with the max backfill to increase the speed, but every time I increase the > weight it will take a lot of time again... > I can face the fact that there will be a performance decrease. > > Looking forward to your comments! > > Regards, > > Kristof > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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