Debian boot over iscsi problem

Hi,

i manage to boot debian 7 via iPXE and iscsi.

Target is freeNAS.

everything is working, but on reboot/shutdown I get message:

Code:

Synchronizing SCSI cache

and after 5 sec

Code:

ping timeout of 5 secs expired, recv timeout 5, 

and then system hangs.

any tips?

P.S.

when upgrade to jessie, working like charm, but I need wheeze for proxmox.

 

Duplicate thread please check http://www.howtoforge.com/forums/showthread.php?p=321516#post321516