Re: ext2 on a CD-RW

[Jens Axboe]

On Fri, Jan 02 2004, Arjan van de Ven wrote:
> On Fri, 2004-01-02 at 02:30, Peter Osterlund wrote:
> 
> > The packet writing code has the restriction that a bio must not span a
> > packet boundary. (A packet is 32*2048 bytes.) If the page when mapped
> > to disk starts 2kb before a packet boundary, merge_bvec_fn therefore
> > returns 2048, which is less than len, which is 4096 if the whole page
> > is mapped, so the bio_add_page() call fails.
> 
> devicemapper has similar restrictions for raid0 format; in that case
> it's device-mappers job to split the page/bio. Just as it is UDF's task
> to do the same I suspect...

It has nothing to do with UDF, it's a driver problem (API breakage).

-- 
Jens Axboe

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