Matthew Wilcox wrote:
On Fri, Jun 09, 2006 at 11:40:03AM -0400, Jeff Garzik wrote:
Users are now forced to remember that, if they write to their filesystem
after using either $mmver or $korgver kernels, they are locked out of
using older kernels.
From the user's perspective, ext3 has no clear "metadata version 1",
"metadata version 2" division. Thus they are now forced to keep a
matrix of kernel versions and ext3 feature flag support, to know which
kernels are usable with which data. It is a support nightmare.
Hang on, you're going too far. You have to enable extents with the
extent mount option. Otherwise you don't get to use them. The user
does, in fact, have a clear division, although maybe the blinky signs
aren't quite luminous enough.
...and how are distros going to deploy this? They are going to turn on
extents by default.
And do we honestly think that is a scalable option _anyway_? That will
slowly bloat fstab and mount command lines with an ever-increasing list
of options.
It's IMO better experience for the user, and gives the developers more
freedom.Look, I _really_ want extents. I am a big fan. But I think
that extents are good time to make a clean break, and let ext3 live as
it is. And it will let ext3 stabilize.
Jeff
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