[Samba] AIO settings

[Jeremy Allison]

On Sat, Jul 23, 2005 at 12:57:28PM -0400, William Jojo wrote:
> 
> Running some test with this on AIX 5.2:
> 
> [2005/07/23 12:44:10, 10] locking/locking.c:is_locked(121)
>   is_locked: posix start=0 len=61440 unlocked for file bill/goodtime.avi
> [2005/07/23 12:44:10, 10] smbd/aio.c:schedule_aio_write_and_X(359)
>   schedule_aio_write_and_X: scheduled aio_write for file
> bill/goodtime.avi, offs
> et 0, len = 61440 (mid = 4928) outstanding_aio_calls = 1
> [2005/07/23 12:44:10, 10] smbd/process.c:async_processing(287)
>   async_processing: Doing async processing.
> [2005/07/23 12:44:10, 10] smbd/aio.c:process_aio_queue(535)
>   process_aio_queue: signals_received = 1
> [2005/07/23 12:44:10, 10] smbd/aio.c:process_aio_queue(536)
>   process_aio_queue: outstanding_aio_calls = 1
> [2005/07/23 12:44:10, 3] smbd/aio.c:handle_aio_write_complete(457)
>   handle_aio_write: file bill/goodtime.avi wanted 61440 bytes. nwritten ==
> -1. Error = Function not implemented
> [2005/07/23 12:44:10, 3] smbd/error.c:unix_error_packet(91)
>   unix_error_packet: error string = Function not implemented
> [2005/07/23 12:44:10, 3] smbd/error.c:error_packet(147)
>   error packet at smbd/aio.c(465) cmd=47 (SMBwriteX) NT_STATUS_DISK_FULL
> 
> I'm stumped on why I'm getting Function Not Implemented. The aio kernel
> extentsion is clearly loaded or smbd would fail to start from unbound
> references.
> 
> I'll work on a resolution if you have any hints. :-)

Look carefully at the AIX aio reference pages. See if there are any
page boundary restrictions for the read/write buffer (ie. they
must align on a 512 byte memory boundary etc). Are there any special
calls you must do on a fd to enable aio ?

Jeremy.