مشكل در پاك كردن لوگ IBSng

[roomi.exe]

درود من مشكل دارم با پاك كردن لوگ IBSng .. الان هم كلا IBSng از كار افتاده و ارورر زير رو ميده
Warning: fopen(/var/log/IBSng/ibs_interface.log) [function.fopen]: failed to open stream: Read-only file system in /usr/local/IBSng/interface/IBSng/inc/error.php on line 16

من هم طبق آموزش http://www.webhostingtalk.ir/f55/37694/ عمل مي كنم اما ارور زير رو ميده .. كسي ميدونه بايد چيكار كنم.

[root@google ~]# cd /var/log/IBSng
[root@google IBSng]# rm -rf  /var/log/IBSng/*
rm: cannot remove `/var/log/IBSng/ibs_console.log': Read-only file system
rm: cannot remove `/var/log/IBSng/ibs_debug.log': Read-only file system
rm: cannot remove `/var/log/IBSng/ibs_error.log': Read-only file system
rm: cannot remove `/var/log/IBSng/ibs_interface.log': Read-only file system
rm: cannot remove `/var/log/IBSng/ibs_queries.log': Read-only file system
rm: cannot remove `/var/log/IBSng/ibs_radius.log': Read-only file system
rm: cannot remove `/var/log/IBSng/ibs_server.log': Read-only file system

اين هم سطح دسترسي فايلها و owner

[root@google IBSng]# ls -l
total 117544
-rw------- 1 root   root   17346527 Sep 16 04:03 ibs_console.log
-rw------- 1 root   root    5574461 Sep 16 04:03 ibs_debug.log
-rw------- 1 root   root      15685 Sep 15 21:42 ibs_error.log
-rw-r--r-- 1 apache apache     1013 Sep 11 01:08 ibs_interface.log
-rw------- 1 root   root   67345213 Sep 16 04:04 ibs_queries.log
-rw------- 1 root   root   25844446 Sep 16 04:03 ibs_radius.log
-rw------- 1 root   root    4082878 Sep 16 01:21 ibs_server.log