Bug#661580: mkfs.xfs fails to detect correct sector size

[Goswin von Brederlow]

Christoph Hellwig <hch at infradead.org> writes:

> On Thu, Mar 01, 2012 at 09:14:09AM +0100, Goswin von Brederlow wrote:
>> And I can confirm that the sector size detection is still broken in
>> 3.1.7.
>
> That's a known bug that Carlos wanted to look into.  If you really can't
> accept smaller I/O without major pain make sure to use a larger logical
> blocksize, which should be handled fine by everything.

Tried that too. Setting a locigal block size of 4096 makes all access
aligned to 4096 byte and makes mkfs.xfs detect a sector size of 4096
too.

But that breaks partitioning support for example. Linux simply won't
read the partition table on /dev/nbd0 anymore. Not sure why. Plus that
doesn't solve the problem for real harddisks.

MfG
        Goswin