[Scst-devel] [ofa-general] WinOF_2_0_5/SRP initiator: slow reads and eventually hangs

[Chris Worley]

On Wed, Sep 2, 2009 at 12:17 PM, Chris Worley<worleys at gmail.com> wrote:
> On Wed, Sep 2, 2009 at 12:05 PM, Bart Van
> Assche<bart.vanassche at gmail.com> wrote:
>> On Wed, Sep 2, 2009 at 7:27 PM, Chris Worley <worleys at gmail.com> wrote:
>>>
>>> Then, the majority of messages were the pair:
>>>
>>> Sep  2 17:12:22 nameme kernel: [408676.552666] [0]: scst:
>>> __scst_init_cmd:3361:Too many pending commands (50) in session,
>>> returning BUSY to initiator "0x0002c903000260470002c90300026047"
>>> Sep  2 17:12:22 nameme kernel: [408676.552670] [0]: scst:
>>> scst_set_busy:366:Sending QUEUE_FULL status to initiator
>>> 0x0002c903000260470002c90300026047 (cmds count 79, queue_type 1,
>>> sess->init_phase 3)
>>>
>>> # grep -e "returning BUSY to initiator" /var/log/messages | wc -l
>>> 221834
>>> # grep -e "Sending QUEUE_FULL status to initiator" /var/log/messages | wc -l
>>> 167948
>>>
>>> Maybe the initiator has stopped due to its "busy" tracking... deciding
>>> the target cannot continue?
>>>
>>> Is the queue settable to larger than 50 outstanding commands?
>>
>> Definitely. The details are explained in the document srpt/README.
>
> This is looking god so far; I've set it to 256, and am not seeing any
> queue-full messages.  This may be the work-around.

No such luck; it takes much longer for the hang to occur, but it
eventually occurs :(

Thanks,

Chris
>
> Thanks,
>
> Chris
>>
>> Bart.
>>
>