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[Uggla <2110902@xxxxxxxxxxxxxxxxxx>]

Hi, and thanks for your detailed report.

>From your description and the logs, the issue appears to be that the
connector object shows multipath: false during a Cinder operation,
despite configuration settings enabling multipath in both Nova and
Glance.

This does not appear to be a Nova bug, as the operation you're
performing (openstack image create with Glance using the Cinder store)
primarily involves Cinder and Glance interactions. The multipath
behavior is likely controlled by how Glance interacts with Cinder and
the connector properties being built.

This may also be a configuration issue, potentially with the os-brick
connector or how Glance is invoking Cinder under the hood.

We recommend asking about this on the #openstack IRC channel on OFTC,
where operators and service experts can help verify your setup.

For now, we’ll mark this bug as Invalid since it’s not related to Nova’s code path.
If you believe Nova is involved or you can reproduce this through Nova workflows (e.g. volume-based instance booting), feel free to reopen and provide further details.

Thanks!

** Project changed: nova => cinder

** Also affects: nova
   Importance: Undecided
       Status: New

** Changed in: nova
       Status: New => Invalid

** Also affects: glance
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2110902

Title:
  multipath not working even though entries added in cinder and nova
  conf files

Status in Cinder:
  New
Status in Glance:
  New
Status in OpenStack Compute (nova):
  Invalid

Bug description:
  OpenStack version: Antelope

  In /etc/cinder/cinder.conf added below line:
  use_multipath_for_image_xfer = True

  In /etc/nova.conf and nova-cpu.conf added below line:
  volume_use_multipath = True

  Used cinder as backend for glance.
  In /etc/glance/glance-api.conf added below lines:
  [glance_store]
  stores = cinder, file, http, swift
  default_store = cinder

  [cinder]
  cinder_store_auth_address = http://10.x.y.z/identity
  cinder_store_user_name = cinder
  cinder_store_password = passwd
  cinder_store_project_name = service
  cinder_store_use_multipath = True

  multipath is running:
  stack@bay02:~$ sudo multipathd show status
  path checker states:
  up                  1

  paths: 0
  busy: False
  stack@bay02:~$

  Executed below command:
  openstack image create --disk-format qcow2 --file cirros-0.6.2-x86_64-disk.img cirros_x

  In logs, we observe that multipath is False in connector object

  May 14 12:10:53 bay02 devstack@c-api.service[661842]: #033[00;32mDEBUG
  cinder.api.openstack.wsgi [#033[01;36mreq-
  ff298040-3e5f-449c-9467-63376829c685
  req-8fc4eb1d-057b-467f-8476-54cee37a1a45 #033[00;36madmin
  admin#033[00;32m] #033[01;35m#033[00;32mAction: 'update', calling
  method: version_select, body: {"attachment": {"connector":
  {"platform": "x86_64", "os_type": "linux", "ip": "127.0.1.1", "host":
  "bay02", "multipath": false, "initiator": "iqn.2005-03.org.open-
  iscsi:3daab193cb", "do_local_attach": false, "uuid":
  "36167ad4-25ce-4c02-a3eb-4afd01fe5237", "system uuid":
  "30313436-3631-4753-4833-3334324b3332", "nvme_native_multipath": true,
  "mountpoint": "glance_store"}}}#033[00m #033[00;33m{{(pid=661842)
  _process_stack
  /opt/stack/cinder/cinder/api/openstack/wsgi.py:866}}#033[00m#033[00m

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