I see, I'm using ssds so it shouldn't be a problem I guess, because the : "bluestore_min_alloc_size": "0" is overwritten with the: "bluestore_min_alloc_size_ssd": "4096" ? -----Original Message----- From: Stefan Kooman <stefan@xxxxxx> Sent: Tuesday, October 12, 2021 2:19 PM To: Szabo, Istvan (Agoda) <Istvan.Szabo@xxxxxxxxx>; ceph-users@xxxxxxx Subject: Re: Where is my free space? Email received from the internet. If in doubt, don't click any link nor open any attachment ! ________________________________ On 10/12/21 07:21, Szabo, Istvan (Agoda) wrote: > Hi, > > 377TiB is the total cluster size, data pool 4:2 ec, stored 66TiB, how can be the data pool on 60% used??!! Space amplification? It depends on, among others (like object size), the min_alloc size you use for the OSDs. See this thread [1], and this spreadsheet [2]. Gr. Stefan [1]: https://lists.ceph.io/hyperkitty/list/dev@xxxxxxx/thread/NIVVTSR2YW22VELM4BW4S6NQUCS3T4XW/ [2]: https://docs.google.com/spreadsheets/d/1rpGfScgG-GLoIGMJWDixEkqs-On9w8nAUToPQjN8bDI/edit#gid=358760253 _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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