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Re: A home directory on removeable storage ...

On Wed, Apr 10, 2013 at 08:23:03AM -0800, peasthope@shaw.ca wrote:
> ... 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?

Is pam_mount of any use to you? It's intended for mounting home
directories on login.

I'm not sure how you'd access the original /home/peter once you'd
mounted the removable home on top of it, though. Someone will know how,

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