Upgrade from 4.x -> 6.2: Old file systems?

[youshi10 at u.washington.edu]

On Fri, 23 Mar 2007, Brett Glass wrote:

> I have a server which I am considering upgrading from 4.11 to 6.2. Besides the 
> operating system disk (which contains all of the expected partitions such as /, 
> /usr, /var, and /tmp), There's a large data disk on the system containing 
> useful data that I'd like to put back online as soon as the upgrade is 
> completed. I'd rather not have to reformat it unless there is a significant 
> advantage to doing so. Does 6.2 work properly with the older disk format? Is 
> there any reason to take the time and effort to back up the data and restore it 
> to the new format? Is there anything I'll need to be careful about if I upgrade 
> just the system disk?
>
> --Brett Glass

Brett,
     Yes, 6.2 does but there are features that were added to UFS2 (softupdates, file size limit raised past 2GB?) which make it a much better filesystem infrastructure than UFS1.
-Garrett