UnicodeDecodeError: 'ascii' codec can't decode outpit of lsblk command

[Alexey. Kalashnikov]

Swarm test:
https://product-ci.infra.mirantis.net/job/9.x.system_test.ubuntu.thread_1/50/testReport/(root)/check_nodes_disks/check_nodes_disks/

Failed on step "Verify hard drive sizes for deployed nodes" in function Checking disk sizes by calling "lsblk" on remote node.
Error message:
http://paste.openstack.org/show/566869/

output of command for this node:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 253:0 0 50G 0 disk
├─vda1 253:1 0 24M 0 part
├─vda2 253:2 0 200M 0 part
├─vda3 253:3 0 200M 0 part /boot
├─vda4 253:4 0 18.1G 0 part
│ ├─os-root (dm-0) 252:0 0 15G 0 lvm /
│ └─os-swap (dm-1) 252:1 0 3G 0 lvm [SWAP]
├─vda5 253:5 0 31.5G 0 part
└─vda6 253:6 0 20M 0 part
vdb 253:16 0 50G 0 disk
├─vdb1 253:17 0 24M 0 part
├─vdb2 253:18 0 200M 0 part
└─vdb3 253:19 0 49.5G 0 part
vdc 253:32 0 50G 0 disk
├─vdc1 253:33 0 24M 0 part
├─vdc2 253:34 0 200M 0 part
└─vdc3 253:35 0 49.5G 0 part

Steps to reproduce:
Execute test "Verify hard drive sizes for deployed nodes"

    Scenario:
        1. Revert snapshot "deploy_node_multiple_interfaces"
        2. Verify hard drive sizes for deployed nodes

expected results:
all steps passed

Actual results:
checking sizes failed with UnicodeDecodeError

Probably Workaround might be using command:
lsblk -i (from help of lsblk command: -i, --ascii use ascii chacters only)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/365861

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/365955

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/365861
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=5fb4f5d0bf88d7b34e1ea9de8eefc2ac1f18920f
Submitter: Jenkins
Branch: stable/mitaka

commit 5fb4f5d0bf88d7b34e1ea9de8eefc2ac1f18920f
Author: Alexey Stepanov <email address hidden>
Date: Tue Sep 6 08:11:19 2016 +0300

    ha one controller tests: make unicode

    Use repr in logwrap
    make unicode strings ha one controller tests
    get_cluster_block_devices -> make unicode output
      (method used 1 times in single test)

    Change-Id: Ia72f57b6be13c66edfcb4512f99f01f11da20f13
    Closes-bug: #1620330

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/365955
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=dca635ef0ad4d2bf93f3b456aa04adb2569a794c
Submitter: Jenkins
Branch: master

commit dca635ef0ad4d2bf93f3b456aa04adb2569a794c
Author: Alexey Stepanov <email address hidden>
Date: Tue Sep 6 08:11:19 2016 +0300

    ha one controller tests: make unicode

    Use repr in logwrap
    make unicode strings ha one controller tests
    get_cluster_block_devices -> make unicode output
      (method used 1 times in single test)

    Change-Id: Ia72f57b6be13c66edfcb4512f99f01f11da20f13
    Closes-bug: #1620330
    (cherry picked from commit 5fb4f5d)