Re: [Ext2-devel] [RFC 0/13] extents and 48bit ext3

Jeff Garzik
2006-06-09T16:37:16Z

Alex Tomas wrote:
>>>>>> Mike Snitzer (MS) writes:
>
> MS> precludes their ability to boot older kernels (steps can be taken to
> MS> make them well aware of this). The "real world situation" you refer
> MS> to, while hypothetically valid, isn't something informed
> MS> ext3-with-extents users will _ever_ elect to do.
>
> one who needs/wants to go back may get rid of extents by:
> a) remounting w/o extents option
> b) copying new-fashion-style files so that copies use blockmap
> c) dropping extents feature in superblock

More likely, they will just backup+restore rather than go through all that.

After leafing through a 50-page manual to match up kernel versions with
ext3 features, to see which older kernels will (or won't) require all
this work.

Jeff