[Bug 1386949] [NEW] Libvirt crashes after startup "/var/run/libvirt/uml-guest: No space left on device" after upgrade from 14.04 to 14.10

[Tim H]

Public bug reported:

I have just upgraded 2 of my machines from 14.04 to 14.10. Both have the
same error after the upgrade.

When the libvirt-bin service is started it crashes with the error:

2014-10-29 00:57:51.863+0000: 4809: info : libvirt version: 1.2.8, package: 1.2.8-0ubuntu11
2014-10-29 00:57:51.863+0000: 4809: error : umlStateInitialize:561 : Failed to create inotify watch on /var/run/libvirt/uml-guest: No space left on device
2014-10-29 00:57:51.863+0000: 4809: error : virStateInitialize:749 : Initialization of UML state driver failed: Unknown problem

df -i shows plenty of space in the directory

Filesystem             Inodes  IUsed   IFree IUse% Mounted on
tmpfs                 1021899    527 1021372    1% /run

** Affects: libvirt (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "libvirtd.log"
   https://bugs.launchpad.net/bugs/1386949/+attachment/4247687/+files/libvirtd.log

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Title:
  Libvirt crashes after startup  "/var/run/libvirt/uml-guest: No space
  left on device" after upgrade from 14.04 to 14.10

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