Re: BLKBSZSET still not working on 2.4.18 ?

[Alan Cox]

On Fri, 2003-01-10 at 15:32, Ludovic Drolez wrote:
> I'm trying to backup a partition on an IDE drive which has an odd number 
> of sectors (204939). With a stock open/read you cannot access the last 
> sector, and that why I tried the BLKBSZSET ioctl to set the basic read 
> block size to 512 bytes. I verified the writen value with BLKBSZGET 
> ioctl, but I still cannot read this last sector !

Its a known 2.4 limitation. The last odd sector isnt normally used by
anything so it has never been a big issue (except with EFI partition
data). There is a patch to allow the last sector to be recovered but
its quite ugly so never went mainstream.