Christoph Hellwig <hch@xxxxxxxxxxxxx> writes:
> On Thu, Mar 01, 2012 at 04:53:32AM +0100, Goswin von Brederlow wrote:
>> I'm asuming libblkid is used, otherwise a sectorsize of 512 would make
>> no sense.
>>
>> It might be that NBD advertises the geometry wrong, as in ft.sectorsize
>> isn't set correctly. That would make that part at least a kernel bug.
>
> Now that I've looked at nbd: I can't find any way to transfer the
> physical or logical block size information to the nbd client. How
> do you try set it on the server?
I don't. The protocol doesn't (yet) have an option for this. There are a
number of new options planed for the new handshake protocol but the nbd
maintainer hasn't had time to implement them yet.
What I do is set the blocksize = 4096 on the nbd-client commandline
knowing that that is what the server expects.
MfG
Goswin
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