Shit, I added this class and now everything start backfilling (10%) How is this possible, I only have hdd's? -----Original Message----- From: Konstantin Shalygin [mailto:k0ste@xxxxxxxx] Sent: woensdag 13 juni 2018 9:26 To: Marc Roos; ceph-users Subject: Re: Add ssd's to hdd cluster, crush map class hdd update necessary? On 06/13/2018 09:01 AM, Marc Roos wrote: > Yes but I already have some sort of test cluster with data in it. I > don’t think there are commands to modify existing rules that are being > used by pools. And the default replicated_ruleset doesn’t have a class > specified. I also have an erasure code rule without any class > definition for the file system. Yes, before migration from multi-root/classless crush to luminous+ classified crush you need to assign classified rulesets to your pools. This is safe to apply on production clusters, on EC pools too. k _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com