Tejun Heo wrote:
> Igor Durdanovic wrote:
>> Tejun Heo writes:
>>>> Can you try to update the firmware as explained in the SIMG support page
>>>> and see whether that fixes the problem?
>> I am actually trying to put all the sw on the array, will try to
>> update firmware later.
>>
>> Have some weird problems .. the whole thing just froze, sigh.
>> Also, why can't I enable write-caching on each drive behind PM?
> 
> You should be.  What do you mean by not being able to enable write-caching?
> 
>>> Hmmm... Before doing that, do your drives spin up one-by-one as the
>>> above probing progresses?
>> Yes, the probing starts with the bottom drive and progresses to the
>> top. But it seems for each drive it resets (from the bottom) all
>> already probed drives.
> 
> SRST failure puts the host port into non-responding state and the driver
> resets the host port which in turn resets the PMP, so libata tries to
> reinitialize everything.  Can you post boot log with printk timestamp
> (CONFIG_PRINTK_TIME) turned on?
> 

Also, does the attached patch change the behavior?

-- 
tejun