Linux – rm: cannot remove ‘[name].rmanbkp’: Input/output error

I'm using Red Hat Enterprise Linux Server release 7.2 (Maipo) and have vgroup mount to folder is: /dev/mapper/vg_oradata-lv_oradata 886G 636G 206G 76% /bak.
Now, In folder /bak have a some file cannot remove with info:

[root@bak bak]# ls -l
ls: cannot access data_t950234427_s4036_p2.rmanbkp: Input/output error
ls: cannot access data_t950499092_s4061_p9.rmanbkp: Input/output error
ls: cannot access data_t950493620_s4055_p1.rmanbkp: Input/output error
ls: cannot access data_t950529442_s4066_p1.rmanbkp: Input/output error
ls: cannot access data_t950499092_s4061_p7.rmanbkp: Input/output error
ls: cannot access data_t950499092_s4061_p10.rmanbkp: Input/output error
ls: cannot access data_t950499092_s4061_p6.rmanbkp: Input/output error
ls: cannot access data_t950499096_s4064_p12.rmanbkp: Input/output error
ls: cannot access data_t950499096_s4064_p10.rmanbkp: Input/output error
ls: cannot access data_t950513219_s4065_p1.rmanbkp: Input/output error
ls: cannot access data_t950493620_s4056_p1.rmanbkp: Input/output error
total 168166396
-????????? ? ?      ?                  ?            ? data_t950234427_s4036_p2.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950493620_s4055_p1.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950493620_s4056_p1.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950499092_s4061_p10.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950499092_s4061_p6.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950499092_s4061_p7.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950499092_s4061_p9.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950499096_s4064_p10.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950499096_s4064_p12.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950513219_s4065_p1.rmanbkp
-????????? ? ?      ?                  ?            ? data_t950529442_s4066_p1.rmanbkp

When I cannot execute command rm -rf its in folder:

[root@bak bak]# rm -rf data_t950234427_s4036_p2.rmanbkp
rm: cannot remove ‘data_t950234427_s4036_p2.rmanbkp’: Input/output error

What is the problem? Any help is highly appreciated.