+++ This bug was initially created as a clone of Bug #1713047 +++ We need to get the fix for this backported to RHOSP 13. It has been merged into master (Train) upstream, but the stable maintenance team has rejected it as a feature backport to Stein, etc. This BZ will track the backport of the fix to RHOSP 15. ---- This is the original description from Bug #1708705: ---- Description of problem:3PAR Cinder Driver:Multi attach feature backport to RHOSP13 Version-Release number of selected component (if applicable): RHOSP 13 This bug has been created for tracking purpose for the backport of 3PAR Cinder driver changes to enable Multi attach feature per a Customer ask. This need to be delivered by June 2019. Added https://review.opendev.org/#/c/560067/2/cinder/volume/drivers/hpe/hpe_3par_common.py change in the code. 3PAR Engineering facing Nova attach issue due to driver mismatch version (QEMU and Libvirt) [[local|localrc]] ENABLE_VOLUME_MULTIATTACH=True ENABLE_UBUNTU_CLOUD_ARCHIVE=False Added backend details in /etc/cinder/cinder.conf: [3pariscsi_1] hpe3par_api_url = https://192.168.1.7:8080/api/v1 hpe3par_username = user hpe3par_password = password san_ip = 192.168.1.7 san_login = user san_password = password volume_backend_name = 3pariscsi_1 hpe3par_cpg = my_cpg hpe3par_iscsi_ips = 192.168.11.2,192.168.11.3 volume_driver = cinder.volume.drivers.hpe.hpe_3par_iscsi.HPE3PARISCSIDriver hpe3par_iscsi_chap_enabled = True hpe3par_debug = True image_volume_cache_enabled = True Added policy in /etc/cinder/policy.json: 'volume:multiattach': 'rule:admin_or_owner' Added https://review.opendev.org/#/c/560067/2/cinder/volume/drivers/hpe/hpe_3par_common.py change in the code. But I am getting below error in the nova log while attaching nova instance to my volume: Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [None req-2cda6e90-fd45-4bfe-960a-7fca9ba4abab demo admin] [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] Instance failed block device setup: MultiattachNotSupportedByVirtDriver: Volume dc25f09a-6ae1-4b06-a814-73a8afaba62f has 'multiattach' set, which is not supported for this instance. Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] Traceback (most recent call last): Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/compute/manager.py", line 1615, in _prep_block_device Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] wait_func=self._await_block_device_map_created) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 840, in attach_block_devices Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] _log_and_attach(device) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 837, in _log_and_attach Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] bdm.attach(*attach_args, **attach_kwargs) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 46, in wrapped Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] ret_val = method(obj, context, *args, **kwargs) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 620, in attach Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] virt_driver, do_driver_attach) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 274, in inner Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] return f(*args, **kwargs) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 617, in _do_locked_attach Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] self._do_attach(*args, **_kwargs) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 602, in _do_attach Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] do_driver_attach) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] File "/opt/stack/nova/nova/virt/block_device.py", line 509, in _volume_attach Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] volume_id=volume_id) Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] MultiattachNotSupportedByVirtDriver: Volume dc25f09a-6ae1-4b06-a814-73a8afaba62f has 'multiattach' set, which is not supported for this instance. Apr 29 04:23:04 CSSOSBE04-B09 nova-compute[31396]: ERROR nova.compute.manager [instance: fcaa5a47-fc48-489d-9827-6533bfd1a9fa] Apr 29 05:41:20 CSSOSBE04-B09 nova-compute[20455]: DEBUG nova.virt.libvirt.driver [-] Volume multiattach is not supported based on current versions of QEMU and libvirt. QEMU must be less than 2.10 or libvirt must be greater than or equal to 3.10. {{(pid=20455) _set_multiattach_support /opt/stack/nova/nova/virt/libvirt/driver.py:619}} stack@CSSOSBE04-B09:/tmp$ virsh --version 3.6.0 stack@CSSOSBE04-B09:/tmp$ kvm --version QEMU emulator version 2.10.1(Debian 1:2.10+dfsg-0ubuntu3.8~cloud1) Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers openstack volume show -c multiattach -c status sneha1 +-------------+-----------+ | Field | Value | +-------------+-----------+ | multiattach | True | | status | available | +-------------+-----------+ cinder extra-specs-list +--------------------------------------+-------------+--------------------------------------------------------------------+ | ID | Name | extra_specs | +--------------------------------------+-------------+--------------------------------------------------------------------+ | bd077fde-51c3-4581-80d5-5855e8ab2f6b | 3pariscsi_1 | {'volume_backend_name': '3pariscsi_1', 'multiattach': '<is> True'}| +--------------------------------------+-------------+--------------------------------------------------------------------+ echo $OS_COMPUTE_API_VERSION 2.60 pip list | grep python-novaclient DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. python-novaclient 13.0.0 Need help from Redhat engineering to close the testing.
Re-setting Target Milestone z1 to --- to begin the 15z1 Maintenance Release.
OSP15 is EOL, and this feature has been already implemented in the newer releases and backported to older ones, so this bug is not needed anymore.