The interface using on PXE could not be renamed on Ubuntu bootstrap (by udev)

[Albert Syriy]

The interface using on PXE boot on Ubuntu bootstrap could not be renamed by udev.
Attempting rename the interface by udev get the error "device busy".
When we are not using the work-around ifdown/ifup eth0 we got following interface names
===
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:56:9c:63:15
          inet addr:10.20.0.3 Bcast:10.20.0.255 Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fe9c:6315/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:179224 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6795 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:270678633 (270.6 MB) TX bytes:1775628 (1.7 MB)

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:65536 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

root@bootstrap:~# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 00:50:56:9c:63:15 brd ff:ff:ff:ff:ff:ff
3: eno33554960: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 00:50:56:9c:79:6e brd ff:ff:ff:ff:ff:ff
===
It happens because udev rules are applied too later, when interfaces have been up and configured.

[Alexander Gordeev (a-gordeev)]

> It happens because udev rules are applied too later, when interfaces have been up and configured.

we can disable udev rules processing by

# udevadm control --stop-exec-queue

and then enable it back with

# udevadm control --start-exec-queue

however, this seems to be too fragile and could have additional side effects as well.

[Bogdan Dobrelya (bogdando)]

Addressed by https://review.openstack.org/#/c/267667

[Bogdan Dobrelya (bogdando)]

@asyriy please update the current state of the issue - I can see there are two patches abandoned, which is the WIP one?
Note, I also merged two ssh-related bugs as duplicates to this one as this seem the root cause for all of them

[Albert Syriy (asyriy)]

The fix has been committed for review
https://review.fuel-infra.org/#/c/16276/
https://review.openstack.org/#/c/270008/

The patch has been checked on the lab (successfully)

[Roman Podoliaka (rpodolyaka)]

7.0 is marked as affected by fuel-mcrobotson by mistake.

[Albert Syriy (asyriy)]

The fix has been tested and is about to merge.

Albert Syriy,

Software Engineer,
Mirantis

On Thu, Jan 21, 2016 at 6:55 PM, Roman Podoliaka <
<email address hidden>> wrote:

> 7.0 is marked as affected by fuel-mcrobotson by mistake.
>
> ** Changed in: mos/7.0.x
> Status: New => Invalid
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1529631
>
> Title:
> The interface using on PXE could not be renamed on Ubuntu bootstrap
> (by udev)
>
> Status in Mirantis OpenStack:
> In Progress
> Status in Mirantis OpenStack 7.0.x series:
> Invalid
> Status in Mirantis OpenStack 8.0.x series:
> In Progress
> Status in Mirantis OpenStack 9.0.x series:
> In Progress
>
> Bug description:
> The interface using on PXE boot on Ubuntu bootstrap could not be renamed
> by udev.
> Attempting rename the interface by udev get the error "device busy".
> When we are not using the work-around ifdown/ifup eth0 we got following
> interface names
> ===
> # ifconfig
> eth0 Link encap:Ethernet HWaddr 00:50:56:9c:63:15
> inet addr:10.20.0.3 Bcast:10.20.0.255 Mask:255.255.255.0
> inet6 addr: fe80::250:56ff:fe9c:6315/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:179224 errors:0 dropped:0 overruns:0 frame:0
> TX packets:6795 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:270678633 (270.6 MB) TX bytes:1775628 (1.7 MB)
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> inet6 addr: ::1/128 Scope:Host
> UP LOOPBACK RUNNING MTU:65536 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
>
> root@bootstrap:~# ip link
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode
> DEFAULT group default
> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP mode DEFAULT group default qlen 1000
> link/ether 00:50:56:9c:63:15 brd ff:ff:ff:ff:ff:ff
> 3: eno33554960: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
> mode DEFAULT group default qlen 1000
> link/ether 00:50:56:9c:79:6e brd ff:ff:ff:ff:ff:ff
> ===
> It happens because udev rules are applied too later, when interfaces
> have been up and configured.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mos/+bug/1529631/+subscriptions
>

[Tatyanka (tatyana-leontovich)]

Looks like fix is on review https://review.openstack.org/#/c/270008/, so move issue status to in progress

[Albert Syriy (asyriy)]

The following request have been merged (branch 8.0)
https://review.fuel-infra.org/#/c/16365/

[Albert Syriy (asyriy)]

It was a fix for the issue, this one
https://review.openstack.org/#/c/270008/
just revert work-around

[Aleksey Zvyagintsev (azvyagintsev)]

Cherry-pick of https://review.openstack.org/#/c/270008/
for stable/8.0
 https://review.openstack.org/#/c/271748/

[Artem Panchenko (apanchenko-8)]

verified

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "8.0"
  api: "1.0"
  build_number: "506"
  build_id: "506"
  fuel-nailgun_sha: "8e954abd70ef0083109f34289de2553dcda544d4"
  python-fuelclient_sha: "4f234669cfe88a9406f4e438b1e1f74f1ef484a5"
  fuel-agent_sha: "658be72c4b42d3e1436b86ac4567ab914bfb451b"
  fuel-nailgun-agent_sha: "b2bb466fd5bd92da614cdbd819d6999c510ebfb1"
  astute_sha: "b81577a5b7857c4be8748492bae1dec2fa89b446"
  fuel-library_sha: "ec7e212972ead554f21b52b9e165156665f659df"
  fuel-ostf_sha: "ab5fd151fc6c1aa0b35bc2023631b1f4836ecd61"
  fuel-mirror_sha: "351d568fa3b3e4dd062054b91d766aa54d379867"
  fuelmenu_sha: "234cb4cbb30fbd2df00f388c28f31606d9cae15f"
  shotgun_sha: "63645dea384a37dde5c01d4f8905566978e5d906"
  network-checker_sha: "a43cf96cd9532f10794dce736350bf5bed350e9d"
  fuel-upgrade_sha: "616a7490ec7199f69759e97e42f9b97dfc87e85b"
  fuelmain_sha: "94507c5e4dad6d8cfbd8f5d41aa8389d5335990a"