[Bug 567334] Re: blocked tasks delay cloud-init for 240 seconds

[Scott Moser]

** Description changed:

  Binary package hint: cloud-init
  
  Running tests for lucid rc, I came across one system that was not
  accessible via ssh.
  
  The console collected after waiting ended like:
  | [    1.036270] Freeing unused kernel memory: 216k freed
  | [    1.037531] Write protecting the kernel text: 4288k
  | [    1.037892] Write protecting the kernel read-only data: 1324k
  | init: console-setup main process (62) terminated with status 1
  | %G
  
  Because this was an ebs root instance, a shutdown was run, and console
  collected after that.  I will attach that full console log.  The
  interesting subsequent output was:
  
  | %G[  240.805451] INFO: task apparmor_parser:182 blocked for more than 120 seconds.
  | [  240.805466] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  | [  240.805581] INFO: task mount:209 blocked for more than 120 seconds.
  | [  240.805587] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  | [  240.805683] INFO: task flush-8:1:232 blocked for more than 120 seconds.
  | [  240.805689] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  | init: plymouth main process (44) killed by SEGV signal^M^M
  | init: plymouth-splash main process (215) terminated with status 2^M^M
  | Generating locales...^M
  |  en_GB.UTF-8... done^M
  | Generation complete.^M
  
  It appears that something apparmor related blocked for 240 seconds,
  which ran past my time alloted for boot and ssh connection.  The system
  *did* come up, but in a much longer time frame than normal.
  
  instance info:
-  region: eu-west-1
-  ami: ami-8f705afb
-  arch: i386
-  build: 20100420
-  root-store: ebs
+  region: eu-west-1
+  ami: ami-8f705afb
+  instance-type: m1.small
+  arch: i386
+  build: 20100420
+  root-store: ebs

-- 
blocked tasks delay cloud-init for 240 seconds
https://bugs.launchpad.net/bugs/567334
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