Adding the pool of ssd's and changing their weights to balance them will not affect your pool of spinning disks. The PGs and OSD weights are isolated inside by being in different pools under different roots.
________________________________ [cid:image85b6bb.JPG@a2ecd567.4085178b]<https://storagecraft.com> David Turner | Cloud Operations Engineer | StorageCraft Technology Corporation<https://storagecraft.com> 380 Data Drive Suite 300 | Draper | Utah | 84020 Office: 801.871.2760 | Mobile: 385.224.2943 ________________________________ If you are not the intended recipient of this message or received it erroneously, please notify the sender and delete it, together with any attachments, and be advised that any dissemination or copying of this message is prohibited. ________________________________ ________________________________________ From: ceph-users [ceph-users-boun...@lists.ceph.com] on behalf of Pasha [pa...@prosperity4ever.com] Sent: Thursday, November 17, 2016 1:01 PM To: ceph-users@lists.ceph.com Subject: [ceph-users] Crush Adjustment Hi guys, Fairly simple questions for you I'm sure, but never had to do it myself so thought I'd get your input. I am running a 5 node cluster with regular spinners and ssd journals at the moment. Recently I threw in 1TB SSD per node and wanted to create a pool that is purely the new SSDs. I found a few guides on how to do this but none of them mention whether the required changes to the crush map would affect my existing pool/data. If there is a "right" way of doing this I would much appreciate it. This is a production cluster hence I can not take any chances that my existing data would be compromised. Thanks very much! _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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