When I mount ceph after the file system. I want to go to create a file, but hint permissions problem, cannot write In /var/log/ceph log information inside, didn't see more information [root@ceph_client /]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 472658192 20199408 428449108 5% / tmpfs 1984548 0 1984548 0% /dev/shm /dev/loop0 3351190 3351190 0 100% /mnt/cdrom 192.168.0.211:6789:/ 158047232 81920 155843584 1% /1 [root@ceph_client /]# cd /1 [root@ceph_client 1]# echo "1">>1.txt -bash: 1.txt: Permission denied [root@ceph_client 1]# cd .. [root@ceph_client /]# ll total 112 drwxr-xr-x. 1 root root 0 Jun 1 20:05 1 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html