On Tuesday, December 16, 2025 at 02:33:33 p.m. EST, Anthony D'Atri via ceph-users <[email protected]> wrote:
> Indeed. I suggest, if Proxmox lets you, encoding the chassis into your > CRUSH topology, even if you don't use it today. Maybe in the future > you can add chassis, which would expand your CRUSH options. > > root default > chassis chassis1 > host host1 > host host2 > host host3 > host host4 > chassis chassis2 > host host5 > ... > > With `host` as the CRUSH failure domain, you do run the risk of a PG > being placed on 3 or even 4 nodes within a single chassis, which > would not be good. A custom CRUSH rule might let you constrain > so that PG placements always span chassis; those are beyond my ken. > Someone else on the list could likely help with that rarified task. > > Alternately there are the shiny new MSR CRUSH rules: > https://docs.ceph.com/en/latest/dev/crush-msr/ > https://www.youtube.com/watch?v=JpkLPkizUt4 Thanks, I will look into that. Andrew _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
