Great, that's good enough for our purposes (which is to keep the serial the same across independent target servers). It looks like I can just echo what I want into vpd_unit_serial. I would have expected to be able to run something like "/backstore/iblock/vol0 set vpd_unit_serial=12345", perhaps we can get to that at some point. Thanks, Marcus On Mon, Mar 19, 2012 at 8:41 PM, Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> wrote: > Hi Marcus, > > On Mon, 2012-03-19 at 02:16 +0000, Marcus wrote: >> Hasse Hagen Johansen <hasse <at> hagenjohansen.dk> writes: >> >> > >> > Hi >> > >> > I have previous used the tgt target where I was able to set the scsi serial & >> id on each lun. Then I could use that >> > to identify the lun in vmware sphere (running esxi 5) >> > >> > I would like to be able to do something similar with the lio target. How do I >> do that? I have looked in the >> > configfs but not really found anything which I could use. Would I be able to >> set a wwn on the underlying >> > iblock ? >> > >> > please also cc me off list as I am not a subscriber >> > >> > Best Regards >> > Hasse Hagen Johansen-- >> > To unsubscribe from this list: send the line "unsubscribe target-devel" in >> > the body of a message to majordomo <at> vger.kernel.org >> > More majordomo info at http://vger.kernel.org/majordomo-info.html >> > >> > >> >> Any answer on this? Every target software I've used, from COMSTAR to SCST to IET >> has had a way to set vendor, serial, and model on your exported LUNs, however I >> don't see anything obvious via targetcli or configfs. Any instruction on how to >> change these would be greatly appreciated. It's important enough that it can >> keep us from using LIO >> > > On the kernel side, the INQUIRY EVPD 0x83 and 0x80 are generated using > values in /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial, > which is what the SCSI initiator is using to associate LUNs across > different SCSI fabric ports. > > On the userspace side, we automatically generate these values and set > this per device backend configfs attribute using UUIDs from rtslib + > legacy tcm_node.py code, and we keep this value persistent across > reboots + failover. > > Note we do not provide mechanism to change the INQUIRY vendor/model, and > you'll have to change 'LIO-ORG' directly in the source for this. > > --nab > -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
