linux 文件属性744,linux下文件属性都是？？？

RedHat6.3 x74 ，ls -l时，有几个文件的属性都是？？？，这几个文件无法删除，其它读写都正常

[root@localhost sscp]# ls

log messages sscp_data_02.dat sscp_main_01 sscp_main_02 sscp_mpp_data yz

[root@localhost sscp]# ls -l

EXT3-fs error (device sdc): ext3_lookup: deleted inode referenced: 30171143

ls: EXT3-fs error (device sdc): ext3_lookup: cannot access ssdeleted inode referenced: 30171145cp_data_02.dat:

Input/output errEXT3-fs error (device sdc): ext3_lookup: or

ls: cannot adeleted inode referenced: 30171144ccess sscp_main_

02: Input/output error

ls: cannot access sscp_main_01: Input/output error

total 356

drwxr-xr-x. 31 root root 4096 Jan 8 10:33 log

-rw-------. 1 root root 344107 Jan 8 10:26 messages

-?????????? ? ? ? ? ? sscp_data_02.dat

-?????????? ? ? ? ? ? sscp_main_01

-?????????? ? ? ? ? ? sscp_main_02

-rw-r--r--. 1 root 503 589 Jan 6 10:39 sscp_mpp_data

-rw-r--r--. 1 root root 16 Jan 8 10:25 yz

[root@localhost sscp]#

只有那3个文件属性是“？？？”的文件无法删除，修改不了权限

[root@localhost sscp]# chmod 777 sscp_main_01

EXT3-fs error (device sdc): ext3_lookup: deleted inode referenced: 30171144

EXT3-fs error (device sdc): ext3_lookup: deleted inode referenced: 30171144

chmod: cannot access `sscp_main_01': Input/output error

[root@localhost sscp]#