Getting error: Read-only file system

[praveen..]

#df -k | more
/dev/mapper/vg00-home 2030995 1295637 630638 68% /home
/dev/mapper/vg00-db2home 4128448 496560 3422176 13% /home/db2home
/dev/mapper/vg03-db2home 4128448 1879024 2039712 48% /home/db2home/db2iri1
/dev/mapper/vg03-db2--wasdbd01 10321208 1587124 8209796 17% /db2-wasdbd01

#cd /home
# ll | more
drwxrwxrwx 12 db2iri db2iadm 4096 Nov 2 01:31 db2home
# cd db2home
# ll
drwxr-xr-x 17 db2iri1 db2iadm 4096 Nov 1 16:06 db2iri1
drwxr-xr-x 6 db2iri2 db2iadm 4096 Jul 12 18:44 db2iri2

# pwd
/home/db2home
# touch a
# ll
-rw-r--r-- 1 root root 0 Nov 2 02:48 a
drwxr-xr-x 17 db2iri1 db2iadm 4096 Nov 1 16:06 db2iri1
drwxr-xr-x 6 db2iri2 db2iadm 4096 Jul 12 18:44 db2iri2


# cd db2iri1
# ll
-rw-r--r-- 1 db2iri1 db2iadm 16440 Sep 12 12:13 1104.txt
-rw-r--r-- 1 db2iri1 db2iadm 15148 Sep 12 12:14 1154.txt
drwxr-xr-x 6 db2iri1 db2iadm 4096 Oct 24 10:08 cheng
# pwd
/home/db2home/db2iri1
# touch a
touch: cannot touch `a': Read-only file system
# mv 1104.txt 1104txt.txt
mv: cannot move `1104.txt' to `1104txt.txt': Read-only file system

# cd /db2-wasdbd01
# ll
drwxr-xr-x 3 db2iri1 db2iadm 4096 Mar 31 2006 archivelog
drwxr-xr-x 3 db2iri1 db2iadm 4096 Oct 21 19:32 backups
# touch a
touch: cannot touch `a': Read-only file system
#


I am not able to make any changes in /home/db2home/db2iri1 & /db2-wasdbd01, These two files system are under vg03,
under vg03, there is no other file system

Please suggest what to do without lost my data.

[praveen..]

I have restarted the server and now i am able to work in this file systems