On Sun, 2015-11-29 at 19:04 -0800, Nicholas A. Bellinger wrote: > On Mon, 2015-11-30 at 02:54 +0000, Sam McLeod wrote: > > >Please don't top post. It's annoying. > > > > Sorry, don't use mailing lists much these days. > > > > > >I'm still not sure what you mean by 'SCSIID'. > > > > The SCSIID is comprised of: > > > > - NAA 6, IEEE Company_id: 0x1405 > > - Vendor Specific Identifier: 0xbff3f42a4 > > - Vendor Specific Identifier Extension: 0x9d84cfcb64e2b933 > > > > Which is an ID of: > > > > 0x6001405bff3f42a49d84cfcb64e2b933 > > > > Ok, good. > > > > > >That is, you need to make sure that: > > > > > > /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial > > > > > >contains the same value across device + export fail-over. > > > > > >Have you confirmed that yet..? > > > > We can set the vpd_unit_serial, that is not our issue. > > What needs to be set on the target is the Company_id, VSI and VSIE as above. > > The Company ID, VSI, and VSIE are generated by LIO based upon the > current vpd_unit_serial configfs attribute value. > > So as long as vpd_unit_serial is persistent, and the same value for > backend devices across export failover to different nodes, Xen will > always see the same EVPD information. > > Are you saying that vpd_unit_serial is already persistent across export > failover, but Xen is still having problems..? > > Have you confirmed with sg_inq -i both before and after the export > failover occurs..? > Btw, here is the code where EVPD=0x83 DEVICE IDENTIFIER is generated from a backend's vpd_unit_serial, (note 00 14 05 Company ID prefix) https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/target/target_core_spc.c#n188 -- 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
