On Fri, Nov 09, 2018 at 04:29:46AM +0900, Tomasz Chmielewski wrote: > LXD 3.6 from a snap on an up-to-date Ubuntu 18.04 server: > > lxd 3.6 9510 stable canonical✓ - > > > Suddenly, some (but not all) containers lost their /proc filesystem: > > # ps auxf > Error: /proc must be mounted > To mount /proc at boot you need an /etc/fstab line like: > proc /proc proc defaults > In the meantime, run "mount proc /proc -t proc" > > # > > > I think I've seen something similar like this in the past. > Can it be attributed to some not-so-well automatic snap upgrades?
That can either be a lxcfs crash or lxcfs bug of some kind. Can you show "ps fauxww | grep lxcfs" on the host. And then inside an affected container run "grep lxcfs /proc/mounts" and for each of the /proc path listed, attempted to read them with "cat", that should let you check if it's just one lxcfs file that's broken or all of them. -- Stéphane Graber Ubuntu developer http://www.ubuntu.com
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