This bug was fixed in the package unattended-upgrades - 0.82.1ubuntu2.2
---------------
unattended-upgrades (0.82.1ubuntu2.2) trusty-proposed; urgency=medium
* Handle the situation where you may not be able to decrease process
niceness e.g on an LXC container. (LP: #1422345)
-- Brian Murray <br...@ubuntu.com> Thu, 05 Mar 2015 15:03:10 -0800
** Changed in: unattended-upgrades (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1422345
Title:
stop being nice does not work
Status in unattended-upgrades package in Ubuntu:
Fix Released
Status in unattended-upgrades source package in Trusty:
Fix Released
Status in unattended-upgrades source package in Utopic:
Fix Released
Status in unattended-upgrades package in Debian:
New
Bug description:
Test Case
---------
1) Install apache2 from the -release pocket
2) Run unattended-upgrades
3) Observe apache2 running with a niceness of 19
4) Downgrade apache2 to the version from the -release pocket
5) Install the version of unattended-upgrades from -proposed
6) Run unattended-upgrades
7) Observe apache2 running with a niceness of 0 i.e. no niceness
Since version 0.81, unattended-upgrades does the upgrade calculation with
os.nice(19). To finish the nice block in /usr/bin/unattended-upgrade, the
following call is used:
os.nice(0)
Since the argument is interpreted as incremental, this should be:
os.nice(-19)
Without this fix, this problem is back:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701850
"unattended-upgrades: nice 19/ionice idle inherited by restarted processes"
Found in the trusty version (0.82.1ubuntu2), but probably in any
version (including Debian) since 0.81.
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https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1422345/+subscriptions
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