[stgt] iSER over iWARP

Hiroyuki Sato hiroysato at gmail.com
Tue Oct 1 10:49:25 CEST 2013


Hello

I'm also interesting about this topic.
Does STGT have  iSER target feature for iWarp( and RoCE)?

Thanks,
Hiroyuki Sato.


2013/10/1 Sushma <gsushma at gmail.com>:
> Yes, I'm able to ping/rping the target.
> I can also run tcp_bw and rc_bw tests using qperf.
> However, I'm not sure about the initiator. Does CentOS 6.4 OFED distribution have iSER initiator or open-iscsi with iSER support for iWARP?
>
> Thanks,
> Sushma
>
> On Sep 30, 2013, at 10:53 PM, Or Gerlitz <ogerlitz at mellanox.com> wrote:
>
>> On 30/09/2013 23:16, Sushma R wrote:
>>> Hi,
>>>
>>> We have two systems with Chelsio T3 RNICs configured for iWARP. We are
>>> able to run qperf tests to measure TCP and RC bandwidth/latencies.
>>> Now we are trying to configure iSER using iscsiadm and tgtadm.
>>>
>>> I configured a target as per the instructions in README.iser document.
>>>
>>> ./tgtadm --lld iser -m target -o new --tid 3 -T
>>> iqn.2013-10.com.example:chelsio.test3
>>> ./tgtadm --lld iser -m logicalunit -o new --tid 3 --lun 1 -b /dev/ram0
>>> ./tgtadm --lld iser -m target -o bind --tid 3 -I ALL
>>>
>>> However, when the initiator does the discovery, I get the following error:
>>> iscsiadm -m discovery -t sendtargets -p 10.196.86.102 -d 2
>>> iscsiadm: Max file limits 1024 4096
>>> iscsiadm: starting sendtargets discovery, address 10.196.86.102:3260,
>>> iscsiadm: connecting to 10.196.86.102:3260
>>> iscsiadm: connected local port 45758 to 10.196.86.102:3260
>>> iscsiadm: connected to discovery address 10.196.86.102
>>> iscsiadm: Connection to Discovery Address 10.196.86.102 failed
>>> iscsiadm: Login I/O error, failed to receive a PDU
>>>
>>>
>>> Could someone please provide inputs on what could be the issue?
>>
>> You're failing on the discovery phase, which is conducted over plain tcp/ip, can you ping that address?
>>
>> Or.
>>>
>>> Thanks,
>>> Sushma
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Hiroyuki Sato
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