calamari-clients: calculatePGNum could create issues
When creating a new pool, Calamari suggests a pg_num value according to:
pgnum = roundUpToNextPowerOfTwo(osdcount * 100 / size)
This formula should be used to define the number of placement groups that will be distributed across all pools in the cluster, not a per-pool value.
Too many PGs in a cluster could result in serious issues.
#2 Updated by Alexandre Marangone about 6 years ago
I don't think there's a perfect solution since it depends on the number of pools already present and the number of pools the user wants to create.
One way to go would be to defer this to the user by adding a help button (like on the graphs page), linking to our documentation on PGs (which needs to be updated too, see #9867).