[Bug 927883] Re: lxc-execute fails due to missing /dev/shm

[Serge Hallyn]

** Description changed:

- Create it.
+ The 'lxc-init' (a lightweight init process used by lxc-execute in place
+ of upstart etc) tries to mount /dev/shm during startup.  If that fails
+ (for instance /dev/shm does not exist) then it aborts execution and
+ returns -1.  This is unreasonable as very few applications actually need
+ /dev/shm.
+ 
+ =====================================
+ SRU Justification:
+ 1. Impact: lxc-execute fails
+ 2. Development fix: ignore failure of mounting /dev/shm.
+ 3. Stable fix: same as development fix
+ 4. Test case (on a precise host):
+    1. lxc-create -t ubuntu -n test1 -- -r oneiric
+    2. chroot /var/lib/lxc/test1/rootfs apt-get install lxc
+    3. rm -rf /var/lib/lxc/test1/rootfs/dev/shm  # probably not needed
+    3. lxc-execute -n test1 -- /bin/ls
+    4. echo $?
+    This will return 255 without the fix, and return 0 (and show a directory listing) with.
+ 5. Regression potential: none
+ =====================================

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https://bugs.launchpad.net/bugs/927883

Title:
  lxc-execute fails due to missing /dev/shm

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