I want to set up a little container. So I unshare the mount namespace
and mount something somewhere (say /mnt) that I want to be my new
root. Now what?
pivot_root("/mnt", "/mnt/garbage") seems to frequently return -EBUSY.
mounting /mnt onto / using MS_MOVE seems to succeed, but / still
points at the old root.
Am I missing a clean way to do this? I want a way to say "make this
mountpoint be the root of the whole mount namespace and lazy-unmount
everything outside it". If there is no straightforward way to do
that, can we add one?
--Andy
--
Andy Lutomirski
AMA Capital Management, LLC
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