On 3/12/20 7:44 AM, Hartwig Hauschild wrote: > Am 10.03.2020 schrieb Wido den Hollander: >> >> >> On 3/10/20 10:48 AM, Hartwig Hauschild wrote: >>> Hi, >>> >>> I've done a bit more testing ... >>> >>> Am 05.03.2020 schrieb Hartwig Hauschild: >>>> Hi, >>>> > [ snipped ] >>> I've read somewhere in the docs that I should provide ample space (tens of >>> GB) for the store.db, found on the ML and Bugtracker that ~100GB might not >>> be a bad idea and that large clusters may require space on order of >>> magnitude greater. >>> Is there some sort of formula I can use to approximate the space required? >> >> I don't know about a formula, but make sure you have enough space. MONs >> are dedicated nodes in most production environments, so I usually >> install a 400 ~ 1000GB SSD just to make sure they don't run out of space. >> > That seems fair. >>> >>> Also: is the db supposed to grow this fast in Nautilus when it did not do >>> that in Luminous? Is that behaviour configurable somewhere? >>> >> >> The MONs need to cache the OSDMaps when not all PGs are active+clean >> thus their database grows. >> >> You can compact RocksDB in the meantime, but it won't last for ever. >> >> Just make sure the MONs have enough space. >> > Do you happen to know if that behaved differently in previous releases? I'm > just asking because I have not found anything about this yet and may need to > explain that it's different now. > It actually became better in recent releases. Nautilus didn't became worse. Hammer and Jewel were very bad with this and they grew to hundreds of GB on large(r) clusters. So no, I'm not aware of any changes. Wido _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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