[Hdaps-devel] Hdapsd lockup (WAS Re: [ltp] HDAPS support for non-Hitachi drives?)

[Jon Escombe]

Chris Hanson wrote:
> Henrique de Moraes Holschuh wrote:
>   
>> That said, what about suspend2?  Did the lockups happen with kernels with
>> and without the suspend2 patches?
>>
>> And what about libata?  Did the lockups happen only with disks under libata
>> control, or also with disks under the legacy ide driver control?
>>     
>
> Here's a data point for you:
>
> I experienced several lockups with my system, a T60p, until I disabled
> hdapsd.  The lockups occurred using linux 2.6.16 with then-current
> suspend2, tp_smapi, and hdaps-protect patches.  The machine has a SATA
> drive and was using the AHCI driver.
>
> I'm currently using 2.6.17 but haven't re-enabled hdapsd, so I don't
> know if the situation has improved.
>   
I've also been able to replicate lockups on a T60 by writing to the 
sysfs protect attribute (vanilla 2.6.16/17 + latest hdaps_protect 
patch). Unfortunately I haven't had much opportunity to investigate - so 
I'm not sure if it's AHCI specific, or whether recent changes in either 
the kernel or the hdaps_protect patches are the cause.

Would be very interesting to see whether it's also happening for people 
using IDE or libata_piix drivers...

Regards,
Jon.