https://ceph.com/community/new-luminous-erasure-coding-rbd-cephfs/ -----Original Message----- From: Florent B [mailto:florent@xxxxxxxxxxx] Sent: zondag 19 mei 2019 12:06 To: Paul Emmerich Cc: Ceph Users Subject: Re: Default min_size value for EC pools Thank you Paul for your answer. On a recent setup on Luminous I had by default min_size=k+m with k=2 and m=1. When you say unsafe : what I would like to do with k=2 and m=1 is equivalent of replicated size=2 pool. In this context, is it really equivalent or EC pool is really unsafe ? Thank you. On 19/05/2019 11:41, Paul Emmerich wrote: Default is k+1 or k if m == 1 min_size = k is unsafe and should never be set. Paul -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 On Sun, May 19, 2019 at 11:31 AM Florent B <florent@xxxxxxxxxxx> wrote: Hi, I would like to know why default min_size value for EC pools is k+m ? In this context, when a single OSD is down, the pool is unavailable (pgs are "incomplete" and stuck queries start to grow). Setting min_size=k seems the right setting, isn't it ? Thank you. Florent _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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