Ubuntu-13.10-- fio: engine libaio not loadable

Ubuntu-13.10-- fio: engine libaio not loadable

[Stephen Nichols]

Greetings all.

I have a issues using the libaio engine on Ubuntu-13.10. FIO version 2.1.8 is installed and runs fine if I leave the -ioengine option out of my configuration (it defaults to ioengine sync). When I try and use -ioengine=libaio I receive the errors

fio: engine libaio not loadable
fio: failed to lead engine libaio

I have use these identical workloads on Suse 11, RH6, and Cent OS systems with no issue. And even after specifically installing libaio on Ubuntu I still see these issues. 

apt-get install libaio1

Any ideas? I'm suspecting this is user error but I can't see where I went wrong.

Thanks
Stephen "Nick" Nichols
Western Digital
Enterprise Storage Group

Re: Ubuntu-13.10-- fio: engine libaio not loadable

[Jens Axboe]

On 2014-04-28 17:59, Stephen Nichols wrote:
> Greetings all.
>
> I have a issues using the libaio engine on Ubuntu-13.10. FIO version 2.1.8 is installed and runs fine if I leave the -ioengine option out of my configuration (it defaults to ioengine sync). When I try and use -ioengine=libaio I receive the errors
>
> fio: engine libaio not loadable
> fio: failed to lead engine libaio
>
> I have use these identical workloads on Suse 11, RH6, and Cent OS systems with no issue. And even after specifically installing libaio on Ubuntu I still see these issues.
>
> apt-get install libaio1
>
> Any ideas? I'm suspecting this is user error but I can't see where I went wrong.

You need libaio-devel (or whatever the package is called) installed, 
otherwise fio can't build with libaio enabled. Watch the configure 
output, it'll tell you what it detects:

$ ./configure
[...]
Linux AIO support             yes

This is also detailed in the "Building" section in the README that came 
with fio.

-- 
Jens Axboe