I changed my fstab into this:
#
# /etc/fstab
# Created by anaconda on Sat Jan 12 02:12:44 2013
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=fb2b6c2e-a8d7-4855-b109-c9717264da8a / ext4 auto,noatime,noload,data=ordered,commit=10,defaults 1 1
UUID=71362665-f627-41e1-a093-de42a0a356e2 /boot ext3 defaults 1 2
UUID=8024a5cd-af4b-4776-af0d-65ad80af8649 swap swap defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/usr/tmpDSK /tmp ext3 defaults,noauto 0 0
/dev/sdd1 /home4 auto auto,noatime,noload,data=ordered,commit=10,defaults 0 0
/dev/sdc1 /home3 auto auto,noatime,noload,data=ordered,commit=10,defaults 0 0
/dev/sdb1 /home2 auto auto,noatime,noload,data=ordered,commit=10,defaults 0 0
Basically the boot sector remains ext3. I disabled journaling for most drives because it causes heavy writes.
Now after rebooting server I can't even access ssh.
The message I got from ssh is connection refused.