Help to make iSER working

Thu Aug 11 15:33:52 UTC 2016

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 ?

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

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 at 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 at 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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>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-scsi
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>>>> 
>> 
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