Hey Hannes, On Tue, 2016-02-16 at 20:08 +0100, Hannes Reinecke wrote: > On 02/08/2016 09:01 AM, Nicholas A. Bellinger wrote: > > On Tue, 2016-02-02 at 14:56 -0800, Nicholas A. Bellinger wrote: > >> On Mon, 2016-02-01 at 10:55 -0600, Mike Christie wrote: > >>> On 01/30/2016 01:38 AM, Nicholas A. Bellinger wrote: > >>>> On Fri, 2016-01-29 at 17:32 -0600, Mike Christie wrote: <SNIP> > >>>> Btw, what does misconfigured mean here wrt target ALUA..? > >>> > >>> [ 25.833195] sd 6:0:0:4: alua: supports implicit and explicit TPGS > >>> [ 25.833360] sd 6:0:0:4: alua: No target port descriptors found > >>> [ 25.833363] sd 6:0:0:4: alua: Attach failed (-22) > >>> [ 25.833365] sd 6:0:0:4: failed to add device handler: -22 > >>> > >> > >> Strange, this hasn't changed in forever on the target side.. > >> > >>> He has LIO configured to report it supports implicit/explicit ALUA, but > >>> the ports do not seem to be configured. > >>> > >>> For the LIO config side, are his LUNs just not in a the default_lu_gp or > >>> any other group? > >> > >> So every non-PSCSI backend device becomes part of default_lu_gp + > >> default_tg_pt_gp and automatically shows up in EVPD=0x83, without user > >> needing to do any additional configuration. > >> > >> Here's what the output looks like: > >> > >> root@haakon3:/usr/src/target-pending.git# sg_inq -Hi /dev/sdb > >> VPD INQUIRY: Device Identification page > >> <SNIP> > >> Designation descriptor number 3, descriptor length: 8 > >> transport: Serial Attached SCSI Protocol (SPL-2) > >> designator_type: Relative target port, code_set: Binary > >> associated with the target port > >> designator header(hex): 61 94 00 04 > >> designator: > >> 00 00 00 00 02 .... > >> Designation descriptor number 4, descriptor length: 8 > >> transport: Serial Attached SCSI Protocol (SPL-2) > >> designator_type: Target port group, code_set: Binary > >> associated with the target port > >> designator header(hex): 61 95 00 04 > >> designator: > >> 00 00 00 00 00 .... > >> Designation descriptor number 5, descriptor length: 8 > >> designator_type: Logical unit group, code_set: Binary > >> associated with the addressed logical unit > >> designator header(hex): 01 06 00 04 > >> designator: > >> 00 00 00 00 00 .... > >> <SNIP> > >> > >> So AFAICT, the relative target port, target port group, and logical unit > >> group being returned from target on v4.5-rc1 code looks correct. > >> > >> Serguei, can you confirm with 'sg_inq -Hi /dev/sdX' output on your side > >> with the v3.10 based target..? > >> > >> AFAICT the parsing in scsi_vpd_tpg_id() from commit a8aa3978 looks > >> correct too. > >> > >> Hannes, any ideas..? > > > > Ping. > > > Please try with my latest scsi_dh_alua patchset posted to linux-scsi. > That should solve the error attaching devices. > Just to confirm, this was not a target side issue, right..? Also, since Serguei is seeing this on v4.4 we'll still need some hack for stable, assuming you're entire patchset won't be in 4.4.y code. ;) Are you OK with Mike's original patch, or do you have something better to submit to Greg-KH..? -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
