2c - just hit this myself on xenail s390x with a soaking openstack-on-
lxd installation.
masking proc-sys-fs-binfmt_misc.automount seemed to be a bad idea...
systemd is in a bad state..
ubuntu@zs93kvi:~$ systemctl -a | grep binfmt
proc-sys-fs-binfmt_misc.automount
loaded active running Arbitrary Executable File
Formats File System Automount Point
proc-sys-fs-binfmt_misc.mount
loaded inactive dead Arbitrary Executable File
Formats File System
systemd-binfmt.service
loaded inactive dead Set Up Additional Binary
Formats
ubuntu@zs93kvi:~$ sudo systemctl mask proc-sys-fs-binfmt_misc.automount
Created symlink from /etc/systemd/system/proc-sys-fs-binfmt_misc.automount to
/dev/null.
ubuntu@zs93kvi:~$
Broadcast message from systemd-journald@zs93kvi (Fri 2017-05-05 10:25:46 EDT):
systemd[1]: Caught <ABRT>, dumped core as pid 23484.
Broadcast message from systemd-journald@zs93kvi (Fri 2017-05-05 10:25:46 EDT):
systemd[1]: Freezing execution.
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Touch seeded packages, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1555760
Title:
Too many levels of symbolic links /proc/sys/fs/binfmt_misc
Status in binfmt-support package in Ubuntu:
Confirmed
Status in systemd package in Ubuntu:
Incomplete
Bug description:
At first I thought this was an LXD issue, but it turns out the issue
is in systemd
https://github.com/lxc/lxd/issues/1727#issuecomment-194416558
ls -l /proc/sys/fs/binfmt_misc fails with error:
Too many levels of symbolic links
I restarted binfmt manually by running:
sudo /usr/sbin/update-binfmts --disable
sudo /usr/sbin/update-binfmts --enable
I think using systemd to do this would have also worked:
sudo service binfmt-support restart
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/binfmt-support/+bug/1555760/+subscriptions
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