Re: AIO!!

From: Benjamin LaHaise
Date: Mon Oct 10 2005 - 11:13:58 EST

On Mon, Oct 10, 2005 at 07:09:08PM +0530, Karthik Sarangan wrote:
> I wrote a small program to do Async IO from a raw disk
> open has no problems.
> My program gets stuck up at aio_read(paio);
> !!WHY!!

O_DIRECT buffers must be aligned on block sized boundaries (minimum 512
bytes). Check the actual return code from the aiocb and you'll find that
it is likely -EINVAL, no -EINPROGRESS. See the man page for
posix_memalign() to properly align the pointer.

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