On Fri, Aug 09, 2013 at 12:50:02PM +0800, jida...@jidanni.org wrote:
> >>>>> "TT" == Theodore Ts'o <ty...@mit.edu> writes:
>
> TT> Why are you even trying to turn off sparse_superblocks?
>
> I wanted to make a test file containing a filesystem with more than one
> superblock without eating up lots of my disk...
There will alsoways be a backup superblock in the block groups #0 and
#1, regardless of whether sparse_superblock is enabled or not. If you
want to make a test file system with a lot of superblocks, a better
thing to do is to reduce the size of the block group --- although if
you reduce the size of the block group to something excessively silly,
like say, "2", that's not something I've necessarily worried about
either.
In general, if you're trying to do something crazy, and things don't
quite work right, feel free to send me patches. But I don't have the
time to try to make sure crazy edge cases that no user should ever use
in real life are 100% correct....
- Ted
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