[Bug 1493135] [NEW] Occasional very slow replies from cgmanager

[Serge Hallyn]

Public bug reported:

=================================
SRU Justification
1. Impact: cgmanager takes 8 seconds or more for each reply
2. Fix: an upstream patch which mounts a tmpfs onto /root is backported
3. Regression potential: there should be none
4. Test case:
   stop cgmanager
   mount --bind /root /root
   mount -o bind,remount,ro /root
   start cgmanager
   cgm ping <- this will be slow
=================================

Cgmanager links against dbus which attempts to open /root/.dbus-
keyrings/org_freedesktop_general.lock.  We don't actually need that, and
/root is sometimes ro (especially at early boot).

** Affects: cgmanager (Ubuntu)
     Importance: High
         Status: Fix Released

** Affects: cgmanager (Ubuntu Trusty)
     Importance: High
         Status: Triaged

** Also affects: cgmanager (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: cgmanager (Ubuntu)
   Importance: Undecided => High

** Changed in: cgmanager (Ubuntu Trusty)
   Importance: Undecided => High

** Changed in: cgmanager (Ubuntu)
       Status: New => Fix Released

** Changed in: cgmanager (Ubuntu Trusty)
       Status: New => Triaged

** Description changed:

+ =================================
+ SRU Justification
+ 1. Impact: cgmanager takes 8 seconds or more for each reply
+ 2. Fix: an upstream patch which mounts a tmpfs onto /root is backported
+ 3. Regression potential: there should be none
+ 4. Test case:
+    stop cgmanager
+    mount --bind /root /root
+    mount -o bind,remount,ro /root
+    start cgmanager
+    cgm ping <- this will be slow
+ =================================
+ 
  Cgmanager links against dbus which attempts to open /root/.dbus-
  keyrings/org_freedesktop_general.lock.  We don't actually need that, and
  /root is sometimes ro (especially at early boot).

-- 
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to cgmanager in Ubuntu.
https://bugs.launchpad.net/bugs/1493135

Title:
  Occasional very slow replies from cgmanager

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cgmanager/+bug/1493135/+subscriptions