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 -~--~~~~--~~--~--~---
SCSI pass through command cause iscsi Conn error
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) Sep 27 09:37:01 localhost kernel: tcp: Error receiving PDU, errno=1001 Sep 27 09:37:01 localhost kernel: connection1:0: detected conn error (1011) Sep 27 09:37:01 localhost kernel: tcp: iscsi_tcp_segment_unmap cb76be10 Sep 27 09:37:01 localhost iscsid: Kernel reported iSCSI connection 1:0 error (1011) state (3) Sep 27 09:37:03 localhost kernel: tcp: iscsi_tcp_hdr_recv_prep (cb76be00) Sep 27 09:37:03 localhost kernel: tcp: iscsi_tcp_send_hdr_prep (cb76be00) . --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
