Sacar /boot del multipath

# mkdir /boot.old
# umount /boot
# mount /dev/mapper/mpathap1 /boot.old/
# mount --bind /boot.old/ /boot    (menos menos bind)

# df -h (no se ve el bind aca pero si en el mount)

Filesystem           Size  Used  Avail  Use% Mounted on
/dev/mapper/VolGroup00-lv_root   30G  5.8G   23G  21% /
tmpfs                 16G     0   16G   0% /dev/shm
/dev/mapper/VolGroup00-lv_home 7.9G  2.6G  5.0G  35% /home
/dev/mapper/mpathap1 388M   65M  304M  18% /boot.old

# mount
/dev/mapper/VolGroup00-lv_root  on / type ext4 (rw)
proc on  /proc type proc (rw)
sysfs on  /sys type sysfs (rw)
devpts on  /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on  /dev/shm type tmpfs (rw)
/dev/mapper/mpathap1  on /boot.old type ext4 (rw)
/boot.old  on /boot type none (rw,bind)