ZFS fs for PVE large scale CEPH install ?

[DynFi User]

I am preparing a large scale CEPH cluster and was wondering if there was anything against installing my PVE on dedicated M.2 NVMe disks (2x 256GB - mirroring) using ZFS as the target OS.

Cluster will have four servers with each server designed with :

2x NVMe M.2 (for the OS --> ZFS)
2x NVMe 2.5" (CEPH)
13x SSD 2.5" (CEPH)


Since I like and know ZFS quite well, I was thinking to use It ?
It is "ok" or would you rather go for an install using EXT4… ?

I will limit ARC size and coupe of other small tunings.

 

[Stefan_R]

There's nothing wrong with using ZFS and Ceph on one node, if that's what you're asking. ZFS as root in general works really well, I usually like to run all my nodes like that.

 

[DynFi User]

Ok - that was my question.
And since I also love using ZFS, I just wanted to make sure there was no limitation or anything "not recommended".

Thanks for your answer.