That's a function of how big the cluster is, and how much churn there is. For production size clusters I would allot at least 50GB, but it sounds like you don't have one. I suspect that OSD and mon RocksDBs will burn an SD card in short order. ymmv. 1.7 GB seems iffy, with all the other stuff that a system might write, including temporary usage during DB compactions.
On Nov 15, 2025, at 4:10 PM, filip Mutterer <filip@3dds.io> wrote:
Hi! its about my Lab setup. As I didn't have a thought about the space requirements for the root file system I want to know if there is a rule by thumb how much space a cpeh mon might need? rightnow I only have the "whoami" container running in rook-ceph so it does consume nearly no space in the OSD. But how far can I go with only 1.7 GB left on my Raspberry Pi's sdcard?
Greetings filip
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