On Mar 23, 2007, at 12:15 PM, Erik Trulsson wrote:
On Fri, Mar 23, 2007 at 11:36:21AM -0700, [EMAIL PROTECTED]
wrote:
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.
The things you mention (softupdates, large files) were and are well
supported
with UFS1 too. There were not really much features added with UFS2
(support
for very large disks (> 1 TB) and some support for extra flags and
attributes are what I can think of right now.)
There is not really any significant gains to be had from converting
the
existing file systems from UFS1 to UFS2.
FreeBSD 6.2 should work just fine with the older disk.
Sorry. I meant "snapshots", a feature of softupdates, which according
to McKusick (dev author of softupdates?) are available post 5.0.
Reference: <http://www.mckusick.com/softdep/>.
-Garrett
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