Filesystem had been read only

Issue

• On below system we got read-only file system and Input/output error.

  user01@server's password: 
  Last login: Tue Jul 13 09:57:53 2010 from client10.example.com
  /opt/scripts/loginlog.sh: line 3: /opt/loginlogs/loginledger.log: Read-only file system 
  [root@server ~]# touch /backup/test 
  touch: cannot touch `/backup/test': Input/output error