[devel] [gmane.comp.file-systems.unionfs.general] Re: Using unionfs to group a few filesystems together

[Anton Farygin <rider@altlinux.com>]

Может кому пригодится ?

On Thu, 14 Jul 2005 15:20:32 -0400, Erez Zadok wrote:

> In message <20050714174724.GB9082-vCsBGSbFJi4XOLVLeuLo0p3xXOyapcuTYd9OGiuxSwg@public.gmane.org>, Thomas Glanzmann writes:
>> Hello,
>> I would like to to use unionfs to merge /data0 /data1 /data2 into /data.
>> All three filesystems (data{0,1,2}) are writable. If someone is writing
>> stuff to /data unionfs should use the disk which has the most free space
>> and put the stuff in it and honour the directory structure is this
>> possible with unionfs? If so, what do I have to do to obtain it? If
>> something is deleted it should be removed from the corresponding
>> filesystem.
> 
>> 	Thomas
> 
> Thomas, what you're asking is a (space) load-balancing feature of sorts.
> Although it's useful, it is somewhat outside the scope of unionfs and would
> require a non-trivial change to existing code.  Unionfs has a specific
> functionality that we'd like to get working perfectly first, and keep it as
> simply as possible, so we can get the code into mainline; we try to avoid
> bloating unionfs with a "kitchen-sink" set of features. :-)
> 
> We have another fan-out project called RAIF in which you feature may fit
> very well.  See http://www.fsl.cs.sunysb.edu/project-raif.html
> 
> Erez.