I had the same problem yesterday, I noticed it when trying to apt-get upgrade a debian testing system. Fuser showed no process owning /run/systemd/private, and ls /proc/1/fd showed that all filedescriptors were closed, except 0, 1 and 2 which were linked to /dev/null.
After rebooting that problem seemed to be gone, except it kept the root filesystem read-only and failed to start several services. Unfortunately, it's on a machine that needs to be up and running, so I didn't have the opportunity to debug the problem, and installed sysvinit instead. If there is anything I should look for in the syslog, let me know. -- Met vriendelijke groet / with kind regards, Guus Sliepen <g...@debian.org>
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