>Are these file system full error have any related to telnet problem? Because I cannot telnet at all to this server.
Only you can answer since we dont know what are the filesystems... (/home?, /var? /tmp?)
>How should I stop this error message from coming to the console screen? It really distrubing me.
Only one way: add extra space by extending those filesystems, and temporary solution while doing so is to stop the logger
To avoid seeing those messages on console modify ur /etc/syslog.conf file.
In /etc/syslog.conf the alert,crit level of messages are by default transferred to /dev/console. Instead replace /dev/console to /var/adm/syslog.log or else to some other file like /var/adm/syslog.alert.
do a bdf and check for the file system percentage usage.
if lvol6 & lvol9 are 100% full,
Solution would be:
To free up some same in those lvols #find /<filesystem> -type f -xdev -print | xargs -e ll | sort -rn -k5 | head -n 10
The above command would show you the top 10 largest files, move or delete those files to free up the space
Extend the lvols. - can be performed in the single user mode.