我在具有CentOS7的ibmcloud上有一个虚拟服务器，我需要在其上启用配额。当我运行命令
quotacheck -uv /
它给了我以下输出：
quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown.
quotacheck: Quota for users is enabled on mountpoint / so quotacheck might damage the file.
Please turn quotas off or use -f to force checking.
我也切换到了救援模式，目的是将silesystem切换到ext4，但是命令
tune2fs -O extents,uninit_bg,dir_index /dev/xvda2
给我输出：
tune2fs 1.39 (29-May-2006)
Invalid filesystem option set: extents,uninit_bg,dir_index
关于如何修复它的任何建议？