List supported file systems for csi.storage.k8s.io/fstype

[LukeMauldin]

Describe the bug

The documentation states that csi.storage.k8s.io/fstype defaults to the file system type ext4. What are the other supported file system values? Specifically, is btrfs a supported value?

Environment details

• Image/version of Ceph CSI driver : v3.6.0
• Helm chart version :
• Kernel version : 5.3.18

[Madhu-1]

for now ext4 and xfs, buts ext4 is recommended as there is an issue with xfs rook/rook#3132 (comment)

[LukeMauldin]

Will other file systems such as btrfs work or will ceph-csi fail trying to provision them?

[Madhu-1]

Will other file systems such as btrfs work or will ceph-csi fail trying to provision them?

We have tested ext4 and xfs, if rbd/kubernetes supports other filesystem types it should be supported with cephcsi also. Please try it out and let us know how it works.