Hi, 4 years ago we've created our cluster with all disks 4osds (ssds and nvme disks) on octopus. The 15TB SSDs still working properly with 4 osds but the small 1.8T nvmes with the index pool not. Each new nvme osd adding to the existing nodes generates slow ops with scrub off, recovery_op_priority 1, backfill and recovery 1-1. I even turned off all index pool heavy sync mechanism but the read latency still high which means recovery op pushes it even higher. I'm trying to somehow add resource to the cluster to spread the 2048 index pool pg (in replica 3 means 6144pg index pool) but can't make it more gentle. The balancer is working in upmap with max deviation 1. Have this script from digitalocean https://github.com/digitalocean/pgremapper, is there anybody tried it before how is it or could this help actually? Thank you the ideas. ________________________________ This message is confidential and is for the sole use of the intended recipient(s). It may also be privileged or otherwise protected by copyright or other legal rules. If you have received it by mistake please let us know by reply email and delete it from your system. It is prohibited to copy this message or disclose its content to anyone. Any confidentiality or privilege is not waived or lost by any mistaken delivery or unauthorized disclosure of the message. All messages sent to and from Agoda may be monitored to ensure compliance with company policies, to protect the company's interests and to remove potential malware. Electronic messages may be intercepted, amended, lost or deleted, or contain viruses.