I just enabled KAIO on my a HP-UX B.11.11 U 9000/800 server running Informix 9.30 and am seeing this error message :

16:15:02 Attempting to free unused operating system segments. This
operation may take several minutes.
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 hpkaiodelseg: ASYNC_DELSEG failed, errno = 22 Invalid argument
16:15:02 Freed 1 shared memory segment(s) (524288000 bytes)

Has anyone seen this before ? It looks like it failed to delete a segment (I'm assuming its a memory segment) but somehow succeeded later.

Any advice would be much appreciated

Hi,
Please test if the Minor and Mayor number of i/o /dev/async is correct.
Also, test if aplicate all patches of HP for Ibm:Informix.
Gustavo.

Thanks for your reply.

How do I test if the Minor and Mayor number of the I/O /dev/async is correct ?

Hi,

A question if you unset of KAIOON, the on-line raises?

Gustavo.

No, I don't think the error will happen when KAIOON is disabled.

We only turned on KAIO recently, and the error message was showing.

I really wonder what error 22 means ..

Hi,

Ok,
Please check this:
Run getprivgrp, create file /etc/privgroup with line "informix MLOCK", next run setprivgrp -f /etc/privgrp.
Next active KAIOON=1 and take On-Line to online.

Gustavo.