PVE 3.1 - Directory - samba - not mounted after reboot

[Nachtfalke]

Hello,

I am using Proxmox VE 3.1 with latest patches and I tried to mount an external buffalo linkstation to store my backups on.
I followed this guide:
http://pve.proxmox.com/wiki/Storage...MBa.29_share_on_Proxmox_VE_via_.2Fetc.2Ffstab

On this buffalo I created 2 folders and shared them.
on my /etc/fstab I added these two lines

//172.17.240.150/VM300-BACKUP /VM300-BACKUP cifs username=admin,password=mySecretPublicPass.,domain=hpa 0 0
//172.17.240.150/VM301-BACKUP /VM301-BACKUP cifs username=admin,password=mySecretPublicPass.,domain=hpa 0 0

After that I mounted these folder with:

mount -a

On GUI I added the directory and everything is fine. The GUI displays the correct size of ~3000GB and ~250GB used.
When rebooting proxmox and going back to the GUI I found that the directories only have ~16.9GB and x00MB used.
When I do:

mount -a

it displays the correct size on GUI.

It does not seem to be a GUI problem because when starting a backup of a VM which is greater than these ~16.9GB it stops and tells me "no free disc space".

This is ms fstab:

# <file system> <mount point> <type> <options> <dump> <pass>
/dev/pve/root / ext3 errors=remount-ro 0 1
/dev/pve/data /var/lib/vz ext3 defaults 0 1
UUID=9e294e32-aa02-4290-bb4a-e6429d92163c /boot ext3 defaults 0 1
/dev/pve/swap none swap sw 0 0
/dev/sdb /HDD500GB ext3 defaults,errors=remount-ro 0 1
//172.17.240.150/VM300-BACKUP /VM300-BACKUP cifs username=admin,password=mySecretPublicPass.,domain=hpa 0 0
//172.17.240.150/VM301-BACKUP /VM301-BACKUP cifs username=admin,password=mySecretPublicPass.,domain=hpa 0 0
proc /proc proc defaults 0 0

I would really appreciate any help of you as I am no linux expert.

Thank you very much in advance!