A home directory on removeable storage ...

[peasthope@shaw.ca]

... is possible.  I understand the concept of mounting 
the filesystem.  

Additionally there can be a backup home directory which 
stays with the machine, on a hdd for example.  I imagine 
that when the machine powers up without the removeable 
storage, the backup home directory is instated.  When 
the removeable storage is connected, the backup is 
remounted as another directory in /home and the removeable 
is mounted as the home.  

So for example, without the removeable present /home/peter 
is on the hdd.  With the removeable present, /home/peter 
is on that and the hdd is /home/peter.bak with the same 
ownership and privilages as /home/peter.  With udev, it 
might be accomplished with one or two scripts.

This can't be an original idea.  Is it available?

Thanks,            ... Peter E.




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