Ceph Limitation on Object Length (Object Store)

HI, I have created an s3 bucket backed by CEPH and when am uploading a blob which is greater than 220 characters the upload is getting failed and anything lesser than this length is working. I have installed CEPH on Centos and the file system type is XFS. Is there any configuration through which I can overcome the 256 character limitation on object length ? Thanks & Regards, Rajiv