https://bugzilla.kernel.org/show_bug.cgi?id=111441

--- Comment #19 from nab <nab@linux-iscsi.org> ---

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:

quoted

On Tue, 2016-02-02 at 14:56 -0800, Nicholas A. Bellinger wrote:

quoted

On Mon, 2016-02-01 at 10:55 -0600, Mike Christie wrote:

quoted

On 01/30/2016 01:38 AM, Nicholas A. Bellinger wrote:

quoted

On Fri, 2016-01-29 at 17:32 -0600, Mike Christie wrote:

<SNIP>

quoted

quoted

quoted

quoted

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..

quoted

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..?

-- 
You are receiving this mail because:
You are the assignee for the bug.