On 2019.08.05 19:52, Ian Zimmerman wrote:
On 2019-08-04 19:36, Grant Taylor wrote:
Create the bin and sbin directories inside of the /usr directory
that is the mount point so that they are on the underlying file
system that /usr is mounted over top of. Then copy the needed
binaries to the /usr/bin & /usr/sbin directories on the underlying
file system. That way, /sbin/fsck -> /usr/sbin/fsck still exists
even before the real /usr is mounted.
Don't you have to go through some extra hoops (a flag to the mount
command or something) to mount over a non-empty directory?
As others have said, no. However, I keep wondering if an overlay file
system might not be of some use here. Start with /bin, containing only
what's necessary to boot before /usr is available. Once /usr is
mounted, overlay mount /usr/bin on /bin (or would it be the other way
around?)
