Created attachment 4724 [details] statfs() test code. On uClibc-0.9.33.2, statfs() does not populate the `f_frsize' field of `struct statfs' even though it defines _STATFS_F_FRSIZE.
Fixed on master as bcf1bfabdef4481d4748e6c4a82b579af628fd75 can you give that a try please?
Fixed for 0.9.33.3 and 0.9.34