docs: Deleting multiple instances on a compute node simultaneously might cause the host losing network connectivity

[Gil Meir]

* Happens on Mellanox deployments using Mellanox ConnectX-3 HCA.

* When deleting few instances simultaneously which are located on the same compute node the host loses its network connectivity.

* Reproduced on versions 5.1 & 5.1.1 which both install the same FW version.

* The immediate work around is rebooting the host to regain network connectivity.

* To solve the issue upgrade the ConnectX-3 FW version to the latest & restart the openibd service.

* This will be added to 5.1 and 5.1.1 release notes.

[Tomasz 'Zen' Napierala (tzn)]

Rebooting the host does not sound like good workaround. Do you have root cause for this so we could work on less intrusive workaround?

[Gil Meir (gilmeir-d)]

The real solution is upgrading the FW right after a fresh deployment is ready, to avoid such crash..

[Irina Povolotskaya (ipovolotskaya)]

Documented within https://review.openstack.org/#/c/143810/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/143810
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=e6686fa84e3461ee97db2e4c3c3d5aeb0a0b4b41
Submitter: Jenkins
Branch: stable/5.1

commit e6686fa84e3461ee97db2e4c3c3d5aeb0a0b4b41
Author: irina povolotskaya <email address hidden>
Date: Wed Dec 24 13:36:14 2014 +0300

    Release Notes 5.1.1 -- Mellanox issues

    Since Mellanox has 2 more issues for 5.1.1, let's add them
    into the list.

    Closes-Bug: 1404659
    Change-Id: I065d6038f812990670bfd9b2ef453bde0ee65e00

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/158596

[Irina Povolotskaya (ipovolotskaya)]

This issue will be included into Release Notes for 6.1. I'll work with Gil to track the progress and check the status before 6.1.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/6.1
Review: https://review.openstack.org/194961

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/194961
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=0e26e7d7cc153d179ec34985645dd23cdd239ddb
Submitter: Jenkins
Branch: stable/6.1

commit 5cc5f0c643aebecaf3bf4580535a3ea7c3334a6c
Author: Mike Scherbakov <email address hidden>
Date: Tue Jun 23 13:43:35 2015 -0700

    Removed streamlined patching backend pieces

    Change-Id: I955e76ccdbd12a9145f4e9b689f80bdf9fcaf929

commit 563c4b5c78ebfcb1f4f91047c2919f6270f9a1d4
Author: Mike Scherbakov <email address hidden>
Date: Tue Jun 23 13:30:30 2015 -0700

    Removed outdated patching guide

    Change-Id: I76180c277789ade9c5ebedd19fe2092847c0b7d9

commit 8d120c14bec1ab41d448683ad146a3053a57c4ee
Author: Irina Povolotskaya <email address hidden>
Date: Tue Jun 23 19:59:11 2015 +0300

    Add dual hypervisor ref arch into 6.1 docs

    Change-Id: I900c24c9de878eafadbfc995aa879b7f55737fac

commit feebd1592d3305b64bbdfd0bc5fe108190aef120
Author: OlgaGusarenko <email address hidden>
Date: Tue Jun 23 18:38:17 2015 +0300

    [OPs guide] Running Ceilometer section edits

    1. conf file extract is updated
    2. note is updated

    Closes-bug: 1467817
    Change-Id: I0217e164108e0ba6c1397045a5e57d13ff429223

commit 44a93f9dead7511a3461ec35248dbb689c81eafd
Author: OlgaGusarenko <email address hidden>
Date: Tue Jun 23 18:04:40 2015 +0300

    [RN6_1] Final changes

    1. capitalization
    2. 2014.2 to 2014.2.2
    3. general improvements

    Change-Id: I45057e90c90550559f66bc67ccdf97a559fd9000

commit bb41389cae58084285688853281516b659686422
Author: evkonstantinov <email address hidden>
Date: Tue Jun 23 16:45:35 2015 +0300

    Update patching decription

    Update patching description with
    the standard Linux commands.

    Change-Id: Ia1a8346639c468fdfce15a11d2430bf3a4731244

commit bf3018fae3f2e564413d33aba6cdebf8868f0b4e
Author: OlgaGusarenko <email address hidden>
Date: Tue Jun 23 15:55:49 2015 +0300

    [RN6_1] Clean up

    1. Rearranges sections
    2. Improves RST
    3. Changes titles order

    Change-Id: I6110bf515667d3d6ba08ad35ff5d593dbc96641e

commit 1c7e4457808e8f2d6c56fdf31252170972e444b9
Author: Maria Zlatkova <email address hidden>
Date: Tue Jun 23 15:26:28 2015 +0300

    Replaces VBOX screenshots

    This patch:
    - replaces VBOX screenshots
    - changes the link for Download Mirantis VirtualBox scripts
     to https://docs.mirantis.com/openstack/fuel/fuel-master/#downloads

    Change-Id: I58dede960c5c3355d39b07ff44b757403f6af02c
    Closes-Bug: #1467872

commit 0a568bf53fc0e25d1d692d5d74b4a7b4d983bbcc
Author: evkonstantinov <email address hidden>
Date: Tue Jun 23 14:01:55 2015 +0300

    6.1 --separate repos

    change wording and add links to the
    separate repos feature.

    Change-Id: Ib5d0778a0d8f1534f79ed2f553574cb69a3150b0

commit 95a188b21cbdd064d92696b7920e6a0105fe0c56
Author: Maria Zlatkova <email address hidden>
Date: Tue Jun 23 12:07:28 2015 +0300

    Corrects the output 'pcs status'

    Changes the example outputs to appropriate ones.

    Change-Id: Ib6d83...

[OpenStack Infra (hudson-openstack)]

Change abandoned by Irina (<email address hidden>) on branch: stable/6.0
Review: https://review.openstack.org/156987