Mover carpeta /var a una nueva particion de Linux

http://blog.oshim.net/2011/10/how-to-move-var-folder-to-new-partition.html

Primero que todo es necesario deshabilitar SELINUX o lidiar con él.
yo prefiero deshabilitarlo editando el archivo /etc/selinux/config

cambiando la linea
SELINUX=enforcing

por

SELINUX=disable

es necesario reiniciar el sistema

1) make the new partition, & format with mkfs.ext3

2) mount the new filesystem in /mnt

# mkdir /mnt/newvar

# mount /dev/sdb1 /mnt/newvar

3) Go to single-user mode so that there is no rw activity on the directory during the process

# init 1

4) Backup data in var only (not the /var directory itself)

# cd /var

# cp -ax * /mnt/newvar

5) Rename the /var directory (to make sure this has worked before deleting it!)

# cd /

# mv var var.old

6) Make new var directory

# mkdir /var

7) Unmount the new partition

# umount /dev/sdb1

8) Remount it as /var

# mount /dev/sdb1 /var

9) If everything goes fine then put an entry into /etc/fstab

/dev/sdb1               /var                    ext3    defaults        0 0