| 2017-08-28 16:59:20 |
bugproxy |
bug |
|
|
added bug |
| 2017-08-28 16:59:22 |
bugproxy |
tags |
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architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 |
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| 2017-08-28 16:59:23 |
bugproxy |
ubuntu: assignee |
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Skipper Bug Screeners (skipper-screen-team) |
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| 2017-08-28 16:59:26 |
bugproxy |
affects |
ubuntu |
initramfs-tools-ubuntu-touch (Ubuntu) |
|
| 2017-08-28 20:43:34 |
Steve Langasek |
affects |
initramfs-tools-ubuntu-touch (Ubuntu) |
systemd (Ubuntu) |
|
| 2017-08-29 07:10:53 |
Andrew Cloke |
bug task added |
|
ubuntu-power-systems |
|
| 2017-08-29 07:10:59 |
Andrew Cloke |
ubuntu-power-systems: importance |
Undecided |
Medium |
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| 2017-08-29 07:11:12 |
Andrew Cloke |
ubuntu-power-systems: assignee |
|
Canonical Foundations Team (canonical-foundations) |
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| 2017-08-29 11:17:34 |
Dimitri John Ledkov |
affects |
ubuntu-power-systems |
ubuntu-z-systems |
|
| 2017-08-29 11:19:14 |
Dimitri John Ledkov |
systemd (Ubuntu): status |
New |
Confirmed |
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| 2017-08-29 11:19:32 |
Dimitri John Ledkov |
nominated for series |
|
Ubuntu Xenial |
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| 2017-08-29 11:19:32 |
Dimitri John Ledkov |
bug task added |
|
systemd (Ubuntu Xenial) |
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| 2017-08-29 11:19:32 |
Dimitri John Ledkov |
nominated for series |
|
Ubuntu Artful |
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| 2017-08-29 11:19:32 |
Dimitri John Ledkov |
bug task added |
|
systemd (Ubuntu Artful) |
|
| 2017-08-29 11:19:32 |
Dimitri John Ledkov |
nominated for series |
|
Ubuntu Zesty |
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| 2017-08-29 11:19:32 |
Dimitri John Ledkov |
bug task added |
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systemd (Ubuntu Zesty) |
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| 2017-08-29 14:26:24 |
Christian Ehrhardt |
bug |
|
|
added subscriber ChristianEhrhardt |
| 2017-08-30 10:11:33 |
Dimitri John Ledkov |
systemd (Ubuntu Artful): status |
Confirmed |
Fix Committed |
|
| 2017-08-31 10:13:52 |
Dimitri John Ledkov |
systemd (Ubuntu Zesty): status |
New |
In Progress |
|
| 2017-09-04 10:46:43 |
Dimitri John Ledkov |
description |
The udev initramfs-tools boot script does not trigger subsystem "add" uevents. As a result, udev rules that listen to subsystem "add" events are never activated. This problem exists on at least Ubuntu 16.04 and 17.10.
On s390, this results in a boot failure if the kernel is configured to start with an active device black list (kernel parameter cio_ignore=all,!condev). An example for an affected udev rule looks like this:
ACTION=="add", SUBSYSTEM=="subsystem", KERNEL=="ccw", RUN{program}+="/bin/sh -c 'echo free 0009,ec30,ec32,f5f0-f5f2 > /proc/cio_ignore'"
A proposed fix would be:
Modify /usr/share/initramfs-tools/scripts/init-top/udev:
Replace line
udevadm trigger --action=add
with
udevadm trigger --type=subsystems --action=add
udevadm trigger --type=devices --action=add
This would also be consistent with the steps that the systemd udev coldplug unit file performs (see /lib/systemd/system/systemd-udev-trigger.service). |
[Impact]
subsystems udev rules are not processed on boot, thus resulting in missing devices on boot / before rootfs is mounted.
[Solution]
trigger udev subsystems and devices, in the initramfs, in that order.
[Testcase]
Boot s390x system with chzdev configured devices, and cio_ignore=all kernel command line parameter. The chzdev configured devices should still be discovered on boot.
[Original Bug report]
The udev initramfs-tools boot script does not trigger subsystem "add" uevents. As a result, udev rules that listen to subsystem "add" events are never activated. This problem exists on at least Ubuntu 16.04 and 17.10.
On s390, this results in a boot failure if the kernel is configured to start with an active device black list (kernel parameter cio_ignore=all,!condev). An example for an affected udev rule looks like this:
ACTION=="add", SUBSYSTEM=="subsystem", KERNEL=="ccw", RUN{program}+="/bin/sh -c 'echo free 0009,ec30,ec32,f5f0-f5f2 > /proc/cio_ignore'"
A proposed fix would be:
Modify /usr/share/initramfs-tools/scripts/init-top/udev:
Replace line
udevadm trigger --action=add
with
udevadm trigger --type=subsystems --action=add
udevadm trigger --type=devices --action=add
This would also be consistent with the steps that the systemd udev coldplug unit file performs (see /lib/systemd/system/systemd-udev-trigger.service). |
|
| 2017-09-04 10:49:41 |
Dimitri John Ledkov |
description |
[Impact]
subsystems udev rules are not processed on boot, thus resulting in missing devices on boot / before rootfs is mounted.
[Solution]
trigger udev subsystems and devices, in the initramfs, in that order.
[Testcase]
Boot s390x system with chzdev configured devices, and cio_ignore=all kernel command line parameter. The chzdev configured devices should still be discovered on boot.
[Original Bug report]
The udev initramfs-tools boot script does not trigger subsystem "add" uevents. As a result, udev rules that listen to subsystem "add" events are never activated. This problem exists on at least Ubuntu 16.04 and 17.10.
On s390, this results in a boot failure if the kernel is configured to start with an active device black list (kernel parameter cio_ignore=all,!condev). An example for an affected udev rule looks like this:
ACTION=="add", SUBSYSTEM=="subsystem", KERNEL=="ccw", RUN{program}+="/bin/sh -c 'echo free 0009,ec30,ec32,f5f0-f5f2 > /proc/cio_ignore'"
A proposed fix would be:
Modify /usr/share/initramfs-tools/scripts/init-top/udev:
Replace line
udevadm trigger --action=add
with
udevadm trigger --type=subsystems --action=add
udevadm trigger --type=devices --action=add
This would also be consistent with the steps that the systemd udev coldplug unit file performs (see /lib/systemd/system/systemd-udev-trigger.service). |
[Impact]
subsystems udev rules are not processed on boot, thus resulting in missing devices on boot / before rootfs is mounted.
[Solution]
trigger udev subsystems and devices, in the initramfs, in that order.
[Testcase]
Boot s390x system with chzdev configured devices, and cio_ignore=all kernel command line parameter. The chzdev configured devices should still be discovered on boot.
[Original Bug report]
The udev initramfs-tools boot script does not trigger subsystem "add" uevents. As a result, udev rules that listen to subsystem "add" events are never activated. This problem exists on at least Ubuntu 16.04 and 17.10.
On s390, this results in a boot failure if the kernel is configured to start with an active device black list (kernel parameter cio_ignore=all,!condev). An example for an affected udev rule looks like this:
ACTION=="add", SUBSYSTEM=="subsystem", KERNEL=="ccw", RUN{program}+="/bin/sh -c 'echo free 0009,ec30,ec32,f5f0-f5f2 > /proc/cio_ignore'"
A proposed fix would be:
Modify /usr/share/initramfs-tools/scripts/init-top/udev:
Replace line
udevadm trigger --action=add
with
udevadm trigger --type=subsystems --action=add
udevadm trigger --type=devices --action=add
This would also be consistent with the steps that the systemd udev coldplug unit file performs (see /lib/systemd/system/systemd-udev-trigger.service).
[Regression Potential]
More udev rules will be now triggered, earlier, during initramfs stage of boot rather than post-pivot-root. However, this is inline with current rootfs behaviour and thus should not regress behaviour - simply some rules will get triggered earlier. |
|
| 2017-09-05 10:56:48 |
Dimitri John Ledkov |
systemd (Ubuntu Xenial): status |
New |
In Progress |
|
| 2017-09-07 18:05:27 |
Brian Murray |
systemd (Ubuntu Zesty): status |
In Progress |
Fix Committed |
|
| 2017-09-07 18:05:30 |
Brian Murray |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2017-09-07 18:05:32 |
Brian Murray |
bug |
|
|
added subscriber SRU Verification |
| 2017-09-07 18:05:36 |
Brian Murray |
tags |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-needed verification-needed-zesty |
|
| 2017-09-11 05:20:43 |
Frank Heimes |
ubuntu-z-systems: status |
New |
In Progress |
|
| 2017-09-11 12:19:40 |
bugproxy |
tags |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-needed verification-needed-zesty |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done verification-done-zesty |
|
| 2017-09-14 16:52:47 |
Launchpad Janitor |
systemd (Ubuntu Artful): status |
Fix Committed |
Fix Released |
|
| 2017-09-19 15:24:06 |
Brian Murray |
systemd (Ubuntu Xenial): status |
In Progress |
Fix Committed |
|
| 2017-09-19 15:24:12 |
Brian Murray |
tags |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done verification-done-zesty |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done-zesty verification-needed verification-needed-xenial |
|
| 2017-09-19 15:53:01 |
Frank Heimes |
ubuntu-z-systems: status |
In Progress |
Fix Committed |
|
| 2017-10-04 13:53:11 |
Dimitri John Ledkov |
tags |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done-zesty verification-needed verification-needed-xenial |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done verification-done-xenial verification-done-zesty |
|
| 2017-10-05 17:32:18 |
Brian Murray |
tags |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done verification-done-xenial verification-done-zesty |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done-xenial verification-needed verification-needed-zesty |
|
| 2017-10-10 08:01:54 |
Dimitri John Ledkov |
tags |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done-xenial verification-needed verification-needed-zesty |
architecture-s39064 bugnameltc-158070 severity-medium targetmilestone-inin1604 verification-done verification-done-xenial verification-done-zesty |
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| 2017-10-11 19:24:47 |
Nobuto Murata |
bug |
|
|
added subscriber Nobuto Murata |
| 2017-10-23 12:13:02 |
Launchpad Janitor |
systemd (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2017-10-23 12:13:32 |
Łukasz Zemczak |
removed subscriber Ubuntu Stable Release Updates Team |
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| 2017-10-23 14:09:28 |
Frank Heimes |
ubuntu-z-systems: status |
Fix Committed |
Fix Released |
|
| 2017-10-26 14:28:26 |
Launchpad Janitor |
systemd (Ubuntu Zesty): status |
Fix Committed |
Fix Released |
|
