On Tue, Feb 17, 2009 Dr. Volker Jaenisch <volker.jaenisch at inqbus.de> wrote: > I checked the Hardware with SRP/SCST - runs fine. So probably no Hardware / > RDMA-Problems. I checked for STGT/Open-Iscsi Software on other hardware > (Again AMD64 but other (ASUS) boards and other (ConnectX) infiniband cards). > Same results. Approx. one out of five reads fails. Since the hardware and low level > ib_drivers are out of question how to narrow the bug further? I would recommend the following 1. run with iscsi/tcp - for that end you should change the transport name from "iser" to "tcp" in the open iscsi initiator "node" file - which is either under /var/lib/iscsi/nodes (e.g ./iqn.2008-12.com.voltair.tgt-ib-iser/10.10.0.90,3260,1/default) or under /etc/iscsi/nodes - this will sort our the possibility that the problem is not related to iser portion of the target and/or the initiator 2. you mentioned HCA firmware of 1.2.0 from which I understand your initiator and/or target have the Mellanox Sinai HCA (25204). Well, there was a bug in the mthca driver which came into play only under Sinai / iSER (initiator side) - It was fixed quite a while back in commit 608d8268be392444f825b4fc8fc7c8b509627129 Author: Michael S. Tsirkin <mst at dev.mellanox.co.il> Date: Mon Apr 16 17:04:55 2007 +0300 IB/mthca: Fix data corruption after FMR unmap on Sinai - make sure you have this fix in your initiator kernel. You mentioned that you also tried 2.6.28 but I wasn't clear if it was the initiator or target side. Also I wasn't clear if under this kernel you install ofed or use the mainline bits. Once we know that both 1 && 2 don't solve the problem, we can take it further. Or. -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html |