On CentOS release 6.7, there's file system problem.
Aftert reboot /home is set under /home (/home/home) like followings.
# ls -l /home
total 48
-rw------- 1 root root 7168 Nov 15 19:10 aquota.group
-rw------- 1 root root 7168 Jan 25 11:09 aquota.user
drwxr-x--- 2 root root 4096 Jan 18 21:55 backups
drwxr-xr-x 4 root root 4096 Jan 1 11:59 home
drwxr-xr-x 8 root root 4096 Apr 5 01:10 log
drwx------ 2 root root 16384 Nov 15 18:58 lost+found
drwxr-xr-x 6 mysql mysql 4096 Dec 13 22:34 mysql
# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup-lv_root
12778200 2946824 9175608 25% /
tmpfs 961176 0 961176 0% /dev/shm
/dev/vda1 487652 205564 256488 45% /boot
/dev/vdb 41153856 549492 38507212 2% /mnt/extradiskA
/dev/vdb 41153856 549492 38507212 2% /home
I have set on fstab /home with 'mount bind' but it seems like bind is not
effective.
/etc/fstab is following.
# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Mon Jul 28 08:21:01 2014
#
# 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
#
/dev/mapper/VolGroup-lv_root / ext4
defaults,usrquota,grpquota 1 1
UUID=9a855356-ee00-4ae7-a185-226566ce1dba /boot ext4
defaults 1 2
UUID=093c9b95-8336-4682-9927-132dbdf2f082 /mnt/extradiskA ext4
defaults,usrquota,grpquota 1 2
/dev/mapper/VolGroup-lv_swap 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
/mnt/extradiskA/home /home none bind 0 0
/mnt/extradiskA/log /var/log none bind 0 0
/mnt/extradiskA/mysql /var/lib/mysql none bind 0 0
/mnt/extradiskA/.backup /.backup none bind 0 0
/mnt/extradiskA/.daily_backup /.daily_backup none bind 0 0
/mnt/extradiskA/backups /var/backups none bind 0 0