Date: Fri, 23 Mar 2007 20:39:53 -0700 From: Garrett Cooper <youshi10@u.washington.edu> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Upgrade from 4.x -> 6.2: Old file systems? Message-ID: <316B1964-FF49-4A8E-96CE-ADAFAE78C57D@u.washington.edu> In-Reply-To: <20070323191553.GA68241@owl.midgard.homeip.net> References: <200703231825.LAA01153@lariat.net> <Pine.LNX.4.43.0703231136210.4380@hymn07.u.washington.edu> <20070323191553.GA68241@owl.midgard.homeip.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mar 23, 2007, at 12:15 PM, Erik Trulsson wrote: > On Fri, Mar 23, 2007 at 11:36:21AM -0700, youshi10@u.washington.edu > 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?316B1964-FF49-4A8E-96CE-ADAFAE78C57D>