On Sun, 22 Aug 2010 03:35:39 -0400 Matthew Chan <talcite@xxxxxxxxx> wrote: > Hi, > > I'm experiencing what I think is data corruption issues when using the > iSER driver in CERN SLC5.5 (which is based directly off RHEL 5.5). > > I just set up stgt with the iSER driver on a mellanox infiniband mesh > with 7 nodes in it. I was having problems with my OCFS2 cluster crashing > randomly on large data writes, so I simplified it down to 1 initiator > and 1 target and an ext4 partition. > > The backing store is a 5 TB linux raid 6 softraid, running on SLC 5.5. > The initiators are running open-iscsi on Ubuntu Server 10.04. I'm using > the OFED packages from each respective distro. > > On my test setup with 1 target and 1 initiator, copying files with > > 'dd if=/dev/zero of=/<ext4 array>/zeroes bs=64k count=10000' > > generated a whole slew of ext4 errors on the initiator. A subsequent > fsck.ext4 showed thousands of inode errors. Trying to transfer a file > with cp generated similar errors. > > Are there any known quirks with the iSER driver, or am I misconfiguring > something? My infiniband connection seems quite stable, and I'm using > ipoib quite heavily right now. Some people have reported problems with the iSER driver. Alexander submitted the completely new implementation: http://lists.wpkg.org/pipermail/stgt/2010-July/003868.html Can you try it? git://git.kernel.org/pub/scm/linux/kernel/git/tomo/tgt.git iser I've not merged it yet but probably I'll do. It would be greatly appreciated if you could test the new driver. Thanks, -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
