Date: Thu, 11 Aug 2016 22:43:17 +0200 From: Ben RUBSON <ben.rubson@gmail.com> To: freebsd-scsi@freebsd.org Cc: Hans Petter Selasky <hanss@mellanox.com>, Oren Duer <oren@mellanox.com>, Oded Shanoon <odeds@mellanox.com>, Meny Yossefi <menyy@mellanox.com>, Roy Shterman <roysh@mellanox.com> Subject: Re: Help to make iSER working Message-ID: <8207D6A0-3647-48B4-A4E0-3F1FCF3A6723@gmail.com> In-Reply-To: <621BCC32-4612-410F-B658-D1086A7A3A09@gmail.com> References: <71E4886B-61C3-4091-A7FF-E5A4F59AEACE@gmail.com> <64d8bc44-b6a3-4c0a-6d13-f919bf26685a@mellanox.com> <41CCC244-A781-4087-A811-B33847EDEC01@gmail.com> <6a464f2c-c048-d29c-e602-c129b35a5d4a@mellanox.com> <B3B47B30-D253-4543-A813-1AEDD3EE2656@gmail.com> <a8b1cd70-3e96-2dd6-20ae-1bf3b315ff89@mellanox.com> <621BCC32-4612-410F-B658-D1086A7A3A09@gmail.com>
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Here are the tests with udaddy from FreeBSD, trying to connect to Linux : # udaddy -s 192.168.2.2 libibverbs: Warning: couldn't open config directory '/etc/ibverbs/'. libibverbs: Warning: couldn't open config directory '/etc/ibverbs/'. udaddy: starting client udaddy: connecting libibverbs: Warning: couldn't open config directory '/etc/ibverbs/'. udaddy: event: RDMA_CM_EVENT_ADDR_ERROR, error: -19 test complete return status -19 Sounds like the issue is with FreeBSD itself. Ben > On 11 Aug 2016, at 18:59, Ben RUBSON <ben.rubson@gmail.com> wrote: > > >> On 11 Aug 2016, at 18:10, Max Gurtovoy <maxg@mellanox.com> wrote: >> >> On 8/11/2016 6:33 PM, Ben RUBSON wrote: >>> Thank you very much Max for your help. >>> >>> >>> >>> I managed to compile the kernel with iSER support doing the 3 modifications below. >>> >>> I added the following to /usr/src/sys/conf/options : >>> ICL_KERNEL_PROXY opt_global.h >>> >>> And I added "options ICL_KERNEL_PROXY" to my kernel configuration file. >>> >>> I then faced this compilation error : >>> /usr/src/sys/modules/ctl/../../cam/ctl/ctl_frontend_iscsi.c:1358:2: error: implicit declaration of function 'icl_conn_handoff_sock' >>> icl_conn_handoff_sock(cs->cs_conn, so); >>> /usr/src/sys/modules/ctl/../../cam/ctl/ctl_frontend_iscsi.c:1358:2: note: did you mean 'icl_soft_handoff_sock'? >>> /usr/src/sys/dev/iscsi/icl.h:158:7: note: 'icl_soft_handoff_sock' declared here >>> int icl_soft_handoff_sock(struct icl_conn *ic, struct socket *so); >>> >>> So I replaced icl_conn_handoff_sock by icl_soft_handoff_sock (sounds like it is the needed correction). >>> >>> iscsictl -r now does not produce previous "invalid argument" error. >>> >>> @trasz : perhaps these modifications should be done in FreeBSD 11 source tree ? > > I'm also rebuilding world with the following to see if it can help : > # cat /etc/src.conf > WITH_ICL_KERNEL_PROXY="YES" > WITH_OFED="YES" > >>> Now I'm facing the following issue : >>> >>> # iscsictl -A -r -t iqn.2012-06.com.test:target1 -p 192.168.2.2 >>> iscsid[8743]: 192.168.2.2 (iqn.2012-06.com.test:target1): failed to connect to 192.168.2.2 using ICL kernel proxy: ISCSIDCONNECT: Input/output error >>> kernel: ERROR: iser_connect_error: conn 0xfffff8096786f000 >>> iscsid[1078]: child process 8743 terminated with exit status 1 >> >> please increase the debug level in both initiator and target and sent it out. > > Logs from the initiator : > iscsid[39668]: 192.168.2.2 (iqn.2012-06.com.test:target1): failed to connect to 192.168.2.2 using ICL kernel proxy: ISCSIDCONNECT: Input/output error > kernel: INFO: iser_free_ib_conn_res: freeing conn 0xfffff8048d276000 cma_id 0 qp 0 > kernel: DEBUG: iser_conn_connect: before cv_wait: 0xfffff8048d276000 > kernel: INFO: iser_cma_handler: event 1 status -19 conn 0xfffff8048d276000 id 0xfffff80880606800 > kernel: ERROR: iser_connect_error: conn 0xfffff8048d276000 > kernel: DEBUG: iser_conn_connect: after cv_wait: 0xfffff8048d276000 > iscsid[1078]: child process 39668 terminated with exit status 1 > > Logs from the target (here I tried TGT) : > No logs, as if TGT did not receive anything. > If I try to connect without the "-r", here is what I get : > tgtd: login_start(502) Target iqn.2012-06.com.test:target1 is RDMA, but conn cid:0 from iqn.1994-09.org.freebsd:srv1 is TCP > So target is correctly iSER configured. > I tried without iSER on both sides, of course it works. > >> From first look I think you need to configure the LIO target to work with demo mode. > > I double-checked, LIO was in demo mode, I followed this guideline : > https://community.mellanox.com/docs/DOC-1468 > > One strange thing, on initiator, sounds like no packet goes through the interface when trying to connect : > # sysctl hw.mlxen1.stat.rx_packets hw.mlxen1.stat.tx_packets > hw.mlxen1.stat.rx_packets: 386 > hw.mlxen1.stat.tx_packets: 409 > # iscsictl -A -r -t iqn.2012-06.com.test:target1 -p 192.168.2.2 > # sysctl hw.mlxen1.stat.rx_packets hw.mlxen1.stat.tx_packets > hw.mlxen1.stat.rx_packets: 386 > hw.mlxen1.stat.tx_packets: 409 > >> Another thing you can try is the user space tgt target (compile with make ISCSI_RDMA=1) that I work with mostly. >> >>> >>> If I remove the "-r" option from the iscsictl command, it correctly connects to the target. >>> >>> On target side, Lio, targetcli : >>> /> ls iscsi/ >>> o- iscsi ............................................. [1 Target] >>> o- iqn.2012-06.com.test:target1 ....................... [1 TPG] >>> o- tpg1 ........................................... [enabled] >>> o- acls .......................................... [0 ACLs] >>> o- luns ........................................... [1 LUN] >>> | o- lun0 ..................... [iblock/block1 (/dev/sdc7)] >>> o- portals ..................................... [1 Portal] >>> o- 192.168.2.2:3260 .................. [OK, iser enabled] >>> >>> I wanted to make some RDMA connection tests with udaddy for example, but I did not found the FreeBSD version. >>> >>> Any advice ? >>> >>> Many thanks ! >>> >>> Ben >>> >>> >>> >>>> On 11 Aug 2016, at 15:44, Max Gurtovoy <maxg@mellanox.com> wrote: >>>> >>>> These are the instructions I get from iscsi maintainer that merged our code to FreeBSD-11: >>>> 1. set WITH_OFED=yes in /etc/make.conf >>>> 2. "make buildkernel buildworld installkernel installworld" >>>> 3. reboot >>>> 4. kldload iser >>>> >>>> After that, make sure you configured all the interfaces correctly and that you have ping between the 2 servers. >>>> later you need to check basic RDMA stuff on your servers (Added Hans/Oded/Meny to help you if needed). >>>> >>>> Only if the above are working you can proceed to check iser. >>>> >>>> Max. >>>> >>>> On 8/11/2016 4:22 PM, Ben RUBSON wrote: >>>>> I just tested to connect to a Linux iSER enabled target, but I still get this error message at initiator side : >>>>> iscsid[1187]: 192.168.2.2 (iqn.2012-06.com.test:target1): failed to connect to 192.168.2.2 using ICL kernel proxy: ISCSIDCONNECT: Invalid argument >>>>> >>>>>> as if my initiator did not understand the iSER command "ISCSIDCONNECT". >>>>>> How to be sure everything is correctly compiled with ICL_KERNEL_PROXY enabled ? >>>>> >>>>> Ben >>>>> >>>>> >>>>>> On 10 Aug 2016, at 22:51, Max Gurtovoy <maxg@mellanox.com> wrote: >>>>>> >>>>>> Hi Ben, >>>>>> >>>>>> iSER initiator is supported in FreeBSD-11 but not the iser target. >>>>>> for the target you should use Linux target such as TGT (user space), >>>>>> Lio or SCST. >>>>>> >>>>>> thanks, >>>>>> Max. >>>>>> >>>>>> >>>>>> On 8/10/2016 8:13 PM, Ben RUBSON wrote: >>>>>>> Hello, >>>>>>> >>>>>>> I have some difficulties to make iSER (FreeBSD 11 BETA3) working. >>>>>>> >>>>>>> >>>>>>> >>>>>>> ### My configuration : >>>>>>> >>>>>>> 2 servers with Mellanox ConnectX-3 NICs. >>>>>>> >>>>>>> >>>>>>> >>>>>>> ### What I did : >>>>>>> >>>>>>> I rebuilt kernel adding the following to GENERIC : >>>>>>> options OFED >>>>>>> device mlxen >>>>>>> options COMPAT_LINUXKPI >>>>>>> >>>>>>> I built iser : >>>>>>> cd /usr/src/sys/modules/iser/ ; make ; make install ; kldload iser >>>>>>> (I saw later-on that I could have used "device iser" in kernel configuration) >>>>>>> >>>>>>> My /etc/ctl.conf : >>>>>>> portal-group pg0 { >>>>>>> discovery-auth-group no-authentication >>>>>>> listen 192.168.2.2 >>>>>>> offload iser >>>>>>> } >>>>>>> target iqn.2012-06.com.test:target1 { >>>>>>> auth-group no-authentication >>>>>>> portal-group pg0 >>>>>>> alias my-iser-disk >>>>>>> lun 0 { >>>>>>> path /dev/da8 >>>>>>> } >>>>>>> } >>>>>>> >>>>>>> >>>>>>> >>>>>>> ### Error : >>>>>>> >>>>>>> As soon as I do the following : >>>>>>> iscsictl -A -r -t iqn.2012-06.com.test:target1 -p 192.168.2.2 >>>>>>> I get this error : >>>>>>> iscsid[1187]: 192.168.2.2 (iqn.2012-06.com.test:target1): failed to connect to 192.168.2.2 using ICL kernel proxy: ISCSIDCONNECT: Invalid argument >>>>>>> iscsid[655]: child process 1187 terminated with exit status 1 >>>>>>> >>>>>>> "sysctl hw.mlxen1.stat.tx_packets" on initiator shows that no packet is sent at all when trying to connect. >>>>>>> >>>>>>> Did I miss something ? >>>>>>> >>>>>>> Many thanks ! >>>>>>> >>>>>>> Ben
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