is rook support to use btrfs for storageclass?

[panyang1217]

When I mount huge ext4 volume (about 1pib ), it take serval minutes when pod start.
So I want to use btrfs for this huge volume, is rook support to using btrfs with storageclass?

[galexrt]

I have updated the title and labels, assuming @panyang1217 you are talking about Rook Ceph.

[leseb]

I think it's more a ceph-csi question, AFAIK it only supports xfs and ext4 but I'll leave @Madhu-1 or @nixpanic to confirm.

[nixpanic]

That is correct, Ceph-CSI only supports ext4 (default) and xfs at the moment.

The CephCSI project uses CentOS as base container images (just like the Ceph project). btrfs is not readily available there, so it is not a feature that can easily be added. It is of course possible to open an issue and propose a PR for adding support, go to https://github.com/ceph/ceph-csi for doing that.