Re: SCSI pass through command cause iscsi Conn error
niko scsi wrote: > I found initiator sent data twice ,check scsi_pass_through_err.cap > file > at frame 4 and frame 5 ,thank you very much ! > I wanna to look inside the code but don't know where to start . > Is the command you are trying to execute a bidirectional command. If so then the datasn is just off. It looks like we send a mode select, then the target sends a r2t (so the exp data sn is incremented to 1), then we send a data out, then the target sends a data in but the datasn is 0 when it should be 1 (for bidi commands you have to take into account the r2ts and data ins). If you are not doing a bidi command, then I am not sure I have seen a data-in in this type of sequence. I think we normally see a data in with ok status in a read command. For your command it seems like we should have got a scsi cmd response pdu. --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
Re: SCSI pass through command cause iscsi Conn error
Check file ipt_open_iscsi_2.0_871.log ipt_open_iscsi_2.0_871.cap open iscsi version 2.0-871 thank you very much . On Oct 16, 2:08 am, Mike Christie wrote: > 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 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 -- 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 -~--~~~~--~~--~--~---
Re: SCSI pass through command cause iscsi Conn error
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 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 -~--~~~~--~~--~--~---
Re: SCSI pass through command cause iscsi Conn error
I found initiator sent data twice ,check scsi_pass_through_err.cap file at frame 4 and frame 5 ,thank you very much ! I wanna to look inside the code but don't know where to start . On Sep 30, 2:48 am, Mike Christie 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 -~--~~~~--~~--~--~---
Re: SCSI pass through command cause iscsi Conn error
Sorry to bother you guys again. Is there possible a situation of " phase collapse " ? target has two ways to return ending status to the initiator. The normal method is via the SCSI Response PDU; the other is via the last Data-In PDU (if any). And in the debug log ,It is exactly the second way .We received opcode = 0x25 Data-In PDU 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) On Sep 30, 2:48 am, Mike Christie 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 -~--~~~~--~~--~--~---
Re: SCSI pass through command cause iscsi Conn error
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. 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 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 -~--~~~~--~~--~--~---
Re: SCSI pass through command cause iscsi Conn error
On 09/26/2009 09:20 PM, niko scsi wrote: > I followed the howto > http://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? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
