After the FreeBSD VM crash, file system in VM got rolled back to some old previous state causing data loss

[Wojciech Puchar]

> I hit this unexpected problem: my host had an ungraceful shutdown while 
> FreeBSD 9.1 STABLE was running in the VirtualBox VM. After reboot of the host 
> and VM, local ufs file system was missing all recent updates for at least 20 
> hours (!!!)
> My question is, how is this possible? Is this related to journaled 
> soft-updates which were enabled in VM?

not possible in FreeBSD with UFS.

but if you run virtualbox under linux i cannot say much...