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Hello, No success with this one :) Could anyone tell me at least if this tutorial to backup/restore a current node on a new HD is still valid with PVE 5 : https://pve.proxmox.com/wiki/Proxmox_VE_4.x_Cluster#Re-installing_a_cluster_node ? It seems that all the Ceph part is missing. Has...

Hello, I have made a PoC with 3 nodes, 3 OSD HDD of 3To per node (so 9 OSDs, replication size of 3 on the hosts, min of 1, test with Filestore (journal on OSD), then Bluestore. Perf in reading are too bad with BS (as mentioned in the documentation, the cluster is too small, specially with HDD...

Thanks, it makes sense indeed. Any specifics to play with to run some tuning test with the cache (not sure I get all these ratios things so far) ?

Thanks, we could achieve the migration with no problem. We have played with the backfill fields to speed it up. As expected, on simple test (dd copy), the write peformances improved by around 20%. Yet, the reading perf on the same tests dropped by 70%. Before digging, would you see any obvious...

Thanks, it worked like a charm :) Yet, what I have done is : took the OSD out, wait for the cluster to be healthy, then stop the OSD, destroy the OSD, re-add it with Bluestore and wait again for the cluster get back in a healthy state (so had to wait twice to get back in a healthy state, which...

Got it :) Yet, Destroy is not clickable. Shouldn't I use Stop or Out (or both) before ?

Hi Alwin, Thanks for the quick answer. I guess we will then only update the OSDs to Bluestore. We have the latest releases : PVE : pve-manager/5.2-12/ba196e4b (running kernel: 4.15.17-1-pve) Ceph : ceph version 12.2.8 So, the only thing to do is : - select the OSD in the GUI - click on...

Hello, We have made tests of Proxmox/Ceph on quite old HDDs (3 nodes, 3 HDDs per node, dedicated Gb network for Ceph). We have created the OSDs with Filestore and stored the journal on each OSD. As expected, the performances are not good. Question 1 : What would be the best to do now to...