F9 (bug?) Superblock features different from backup

Ahmed Kamal email.ahmedkamal at googlemail.com
Sat May 10 22:18:33 UTC 2008


bingo, I had created a virtualbox VM, which created a 8G file, that must
have triggered the superblock changes. I feel much calmer now. Thank you :)

On Sun, May 11, 2008 at 1:15 AM, Eric Sandeen <sandeen at redhat.com> wrote:

> Ahmed Kamal wrote:
> > Just out of curiosity, could you let me know what kind of changes the
> > kernel makes to the superblock without asking first! That sounds
> interesting
>
> sure, things like the first time a "large" (> 2G file) is written it
> will set a flag to that effect.
>
> Or the first time an extent-based file is created on ext4.
>
> We've talked about removing these, actually, and requiring the flags to
> be set at mkfs time, or via tune2fs, if you wish to use the feature,
> rather than silently turning them on.
>
> -Eric
>
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