Just spent an hour attempting to implement the "optional" property and I'm
afraid it can't be done in a sane way due to:
- We rely on the path existing on the host at the time the device is added to
read a number of flags from it for config validation
- We rely on the bind-mount device existing during removal so we can
unconfigure the cgroup limits.
I had a commit which attempted to workaround most of those, but it ended
up making "optional" such a special case that half the validation code
would be bypassed and cgroup configuration might have ended up left
behind after device removal which could be a potential security risk for
privileged containers...
So I'll only be submitting the batch removal fix for this issue.
** Changed in: lxd (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1690299
Title:
Cannot remove detached devices from container
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