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    SubjectRe: GFS, what's remaining
    On Sat, Sep 03, 2005 at 08:14:00AM +0200, Arjan van de Ven wrote:
    > On Sat, 2005-09-03 at 13:18 +0800, David Teigland wrote:
    > > On Thu, Sep 01, 2005 at 01:21:04PM -0700, Andrew Morton wrote:
    > > > Alan Cox <> wrote:
    > > > > > - Why GFS is better than OCFS2, or has functionality which OCFS2 cannot
    > > > > > possibly gain (or vice versa)
    > > > > >
    > > > > > - Relative merits of the two offerings
    > > > >
    > > > > You missed the important one - people actively use it and have been for
    > > > > some years. Same reason with have NTFS, HPFS, and all the others. On
    > > > > that alone it makes sense to include.
    > > >
    > > > Again, that's not a technical reason. It's _a_ reason, sure. But what are
    > > > the technical reasons for merging gfs[2], ocfs2, both or neither?
    > > >
    > > > If one can be grown to encompass the capabilities of the other then we're
    > > > left with a bunch of legacy code and wasted effort.
    > >
    > > GFS is an established fs, it's not going away, you'd be hard pressed to
    > > find a more widely used cluster fs on Linux. GFS is about 10 years old
    > > and has been in use by customers in production environments for about 5
    > > years.
    > but you submitted GFS2 not GFS.

    Just a new version, not a big difference. The ondisk format changed a
    little making it incompatible with the previous versions. We'd been
    holding out on the format change for a long time and thought now would be
    a sensible time to finally do it.

    This is also about timing things conveniently. Each GFS version coincides
    with a development cycle and we decided to wait for this version/cycle to
    move code upstream. So, we have new version, format change, and code
    upstream all together, but it's still the same GFS to us.

    As with _any_ new version (involving ondisk formats or not) we need to
    thoroughly test everything to fix the inevitible bugs and regresssions
    that are introduced, there's nothing new or surprising about that.

    About the name -- we need to support customers running both versions for a
    long time. The "2" was added to make that process a little easier and
    clearer for people, that's all. If the 2 is really distressing we could
    rip it off, but there seems to be as many file systems ending in digits
    than not these days...


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