On 10/15/2009 01:36 AM, niko scsi wrote:
> I checked the debug message and the code in iscsi_tcp_segment_done
> but i can not understand the infomation in tcp debug info shown below.
>

Could you also send the libiscsi_tcp and libiscsi debug output?

And could you send more log. Send the part up to the point you get the 
datasn error.

> twice ?
>
> Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_send_data_prep
> (cb76be00, offset=0, datalen=12)
> Sep 27 09:37:01 localhost kernel: tcp: copied 0 0 size 48 xmit
> Sep 27 09:37:01 localhost kernel: tcp: copied 0 48 size 48 xmit
> Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_segment_unmap
> cb76bf4c
> Sep 27 09:37:01 localhost kernel: tcp: total copied 48 total size 48
> Sep 27 09:37:01 localhost kernel: tcp: Header done. Next segment size
> 12 total_size 12
> Sep 27 09:37:01 localhost kernel: tcp: copied 0 0 size 12
> xmit             ------------------------------------- This place
> Sep 27 09:37:01 localhost kernel: tcp: copied 0 12 size 12
> xmit            ------------------------------------- can not
> understand
> Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_segment_unmap
> cb76bf4c
> Sep 27 09:37:01 localhost kernel: tcp: total copied 12 total size
> 12       -------------------------------------
> Sep 27 09:37:01 localhost kernel: tcp: copied 0 0 size 0 xmit
> Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_segment_unmap
> cb76bf4c
> Sep 27 09:37:01 localhost kernel: tcp: total copied 12 total size
> 12       --------------------------------------
> Sep 27 09:37:01 localhost kernel: tcp: xmit 60 bytes
> Sep 27 09:37:01 localhost kernel: tcp: no R2Ts yet
> Sep 27 09:37:01 localhost kernel: tcp: in 60 bytes
> Sep 27 09:37:01 localhost kernel: tcp: skb dfab65c0 ptr=da5a5a54
> avail=60
>
> On Sep 30, 2:48 am, Mike Christie<micha...@cs.wisc.edu>  wrote:
>> On 09/26/2009 09:20 PM, niko scsi wrote:
>>
>>
>>
>>
>>
>>> I followed the 
>>> howtohttp://tldp.org/HOWTO/SCSI-Generic-HOWTO/scsi_snd_cmd.html
>>> to pass through scsi cmd with data (self defined,target can handle
>>> it)  to iscsi disk.
>>>    however,the request was handled six times ,I checked the log ,the
>>> reason is shown below. The connection failed and recovered six
>>> times ,and I tested many times ,each time ,the same :six times!
>>> I'm newbie to scsi program. Any idea that can cause this problem ?
>>> error occurred in function iscsi_data_rsp
>>> tcp debug infomations show below :
>>> .......................................
>>> Sep 27 09:37:01 localhost kernel: tcp: skb dfab65c0 ptr=da5a5a54
>>> avail=60
>>> Sep 27 09:37:01 localhost kernel: tcp: copied 0 0 size 48 recv
>>> Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_segment_recv copying
>>> 48
>>> Sep 27 09:37:01 localhost kernel: tcp: copied 0 48 size 48 recv
>>> Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_segment_unmap
>>> cb76be10
>>> Sep 27 09:37:01 localhost kernel: tcp: total copied 48 total size 48
>>> Sep 27 09:37:01 localhost kernel: tcp: segment done
>>> Sep 27 09:37:01 localhost kernel: tcp: opcode 0x25 ahslen 0 datalen 12
>>> Sep 27 09:37:01 localhost kernel: tcp: iscsi_data_rsp: ctask-
>>>> exp_datasn(1) != rhdr->datasn(0)
>> You might not be doing anything wrong. It might a target or initiator bug.
>>
>> What target are you using? In your setup, did you modify the iscsi
>> target in some way?
>>
>> And what kernel are using?- Hide quoted text -
>>
>> - Show quoted text -
>
> >


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"open-iscsi" group.
To post to this group, send email to open-iscsi@googlegroups.com
To unsubscribe from this group, send email to 
open-iscsi+unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/open-iscsi
-~----------~----~----~----~------~----~------~--~---

Reply via email to