Re: [ceph-users] Crush maps : split the root in two parts on an OSD node with same disks ?

2018-06-13 Thread Hervé Ballans
Thanks Janne for your reply. Here are the reasons which made me think to "physically" split the pools : 1) A different usage of the pools : the first one will be used for user home directories, with an intensive read/write access. And the second one will be used for data storage/backup, with e

Re: [ceph-users] Crush maps : split the root in two parts on an OSD node with same disks ?

2018-06-12 Thread Janne Johansson
Den tis 12 juni 2018 kl 15:06 skrev Hervé Ballans < herve.ball...@ias.u-psud.fr>: > Hi all, > > I have a cluster with 6 OSD nodes, each has 20 disks, all of the 120 > disks are strictly identical (model and size). > (The cluster is also composed of 3 MON servers on 3 other machines) > > For design

[ceph-users] Crush maps : split the root in two parts on an OSD node with same disks ?

2018-06-12 Thread Hervé Ballans
Hi all, I have a cluster with 6 OSD nodes, each has 20 disks, all of the 120 disks are strictly identical (model and size). (The cluster is also composed of 3 MON servers on 3 other machines) For design reason, I would like to separate my cluster storage into 2 pools of 60 disks. My idea is