Units like "systemd-resolved.service" contain with good reason:
"ProtectSystem=strict"
This of course bind mounts mounted filesystems into the units userspace.
"strict" is
"If set to "strict" the entire file system hierarchy is mounted
read-only, except for the API file system subtrees /dev/, /proc/ and /sys/"
Can these filesystems /dev, /proc, /sys be extended globally somewhere?
There is the perfectly good: "InaccessiblePaths=-/cvmfs" which does a
great job of not mounting /cvmfs into the name space but alas this
is a per unit setting of course AFAIK.
Motivation here is that when "funny" filesystems (think /afs, /cvmfsm,
... /eos ) go "bad" for what ever reason this can stop "reload
systemd-resolved.service" being restarted as remount is bad. I've not
tried but can may be reproduce with something more standard like a stale
/nfs.
Any way to set a default for InaccessiblePaths= or equivalent to stop
these FSs being bind mounted in ever.
Steve.
