Hello,
I am trying to understand how to optimize my ceph pools and understand how to associate pgs to pools correctly. I have the following.
12 OSDs in HDD pool in 3 hosts
9 OSDs in NVMe pool in 3 hosts
3 OSDs in SSD pool in 3 hosts
Each one is a 3/2 with a default of 128 PGs
if I used this calculator: https://ceph.io/pgcalc/
For HDD
Size of 3, OSD 12, %Data 100 Targets 100, It says I should be at 512.
For NVMe
Size of 3, OSD 9, %Data 100 Targets 100, It says I should be at 256
For SSD:
Size of 3, OSD 3, %Data 100, Targets 100, It says I should be at 128
So the only one that is right is the SSD one. Should I change the other two? I thought nautilus sorta self tunes but I'm not so sure what to do here:
I am trying to understand how to optimize my ceph pools and understand how to associate pgs to pools correctly. I have the following.
12 OSDs in HDD pool in 3 hosts
9 OSDs in NVMe pool in 3 hosts
3 OSDs in SSD pool in 3 hosts
Each one is a 3/2 with a default of 128 PGs
if I used this calculator: https://ceph.io/pgcalc/
For HDD
Size of 3, OSD 12, %Data 100 Targets 100, It says I should be at 512.
For NVMe
Size of 3, OSD 9, %Data 100 Targets 100, It says I should be at 256
For SSD:
Size of 3, OSD 3, %Data 100, Targets 100, It says I should be at 128
So the only one that is right is the SSD one. Should I change the other two? I thought nautilus sorta self tunes but I'm not so sure what to do here: