Hi Dan, thanks for your reply. I wasn’t worried about the setting itself, but about the balancer starting to use the pg-upmap feature (which currently fails, because of the jewel setting). I would assume though, that the balancer is using pg-upmap in a throttled way to avoid performance issues. I will execute the command on the weekend, just to be safe. Best regards Felix --------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------- Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Volker Rieke Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Dr. Astrid Lambrecht, Prof. Dr. Frauke Melchior --------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------- Am 30.11.2022 um 12:48 schrieb Dan van der Ster <dvanders@xxxxxxxxx>: Hi Felix, This change won't trigger any rebalancing. It will prevent older clients from connecting, but since this isn't a crush tunable it won't directly affect data placement. Best, Dan On Wed, Nov 30, 2022, 12:33 Stolte, Felix <f.stolte@xxxxxxxxxxxxx<mailto:f.stolte@xxxxxxxxxxxxx>> wrote: Hey guys, our ceph cluster is on pacific, but started on jewel years ago. While i was going through the logs of the mrg daemon i stumbled about the following entry: ========= [balancer ERROR root] execute error: r = -1, detail = min_compat_client jewel < luminous, which is required for pg-upmap. Try 'ceph osd set-require-min-compat-client luminous' before using the new interface ========= I could confirm that with `ceph osd get-require-min-compat-client` my value is still value. Reading the docs it looks to me, we really want to set this to luminous to benefit from a better pg distribution. My question for you is the following: Do I have to expect a major rebalancing after applying the 'ceph osd set-require-min-compat-client luminous‘ command, affecting my cluster IO? All my daemons are on pacific and all clients at least on nautilus. Thanks in advance and best regards Felix --------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------- Forschungszentrum Juelich GmbH 52425 Juelich Sitz der Gesellschaft: Juelich Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir Volker Rieke Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Dr. Astrid Lambrecht, Prof. Dr. Frauke Melchior --------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------- _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx<mailto:ceph-users@xxxxxxx> To unsubscribe send an email to ceph-users-leave@xxxxxxx<mailto: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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