[plug] Samba Sharing a External USB drive

[Craig]

I managed to share folders from my desktop on Ubuntu 14.04 to my private 
network, and the data is visible from a Windows machine. I even shared a 
hdd that has windows on it. So everything seems to work fine.

When I want to share a mounted device (USB pen drive, USB HDD... etc) 
however, I get from the Windows machine: *Access denied on file \...*

I realize that this is due to the missing rights on the mounted folder. 
By default a mounted folder gets the equivalent of *700 : drwx------*, 
and the owner myself. But, I can't seem to change the rights on the 
external device... they remain 700.

Is there a special trick I need to do in order to share mounted usb devices?

Thanks


On 24/09/14 20:00, plug-request at plug.org.au wrote:
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> Today's Topics:
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>     1. Re: Managing files across diverse media? file deduplication,
>        checksums (Robert Parker)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 23 Sep 2014 19:53:08 +0700
> From: Robert Parker <rlp1938 at gmail.com>
> To: plug at plug.org.au
> Subject: Re: [plug] Managing files across diverse media? file
> 	deduplication,	checksums
> Message-ID:
> 	<CAAykW6mzxqcQ6-nLy5prkgAVU+7O1835BzAmeSHfrshxb0_P+g at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> On Mon, Sep 22, 2014 at 2:58 PM, Nick Bannon <nick at ucc.gu.uwa.edu.au> wrote:
>
>> On Mon, Sep 01, 2014 at 08:10:05PM +0800, John McCabe-Dansted wrote:
>>> [...] backup everything onto new media yet again. I'd like to be able to
>>> quickly maintain a list of sha256 or md5 sums that could be used to:
>> I know just how you feel!
>>
>>> 1) To list all files on X that are not duplicated/backed up on other
>> media
>>> 2) Deduplicate files on X quickly (using existing md5 hashes).
>>> 3) To list all files that are not duplicated onto offline or WORM storage
>>> 4) To list all files that are not duplicated onto offsite storage
>>> 5) Match JPGs by EXIF date.
>> but!
>>> md5deep wants to regenerate hashes for unmodified files on every run.
>> I haven't found the perfect thing yet; but something might be close to
>> it.
>>
>> First, I've found "rdfind" pretty simple. If you want to straightforwardly
>> remove duplicates or consolidate them with links/symlinks, it will do
>> that efficiently across multiple directories. If you just take a deep
>> breath and do that, it can make manual cleanups and de-duplication much
>> more tractable.
>>
>> "summain" looks interesting, though at first glance I expect it to have
>> the same problem as "md5deep". The same author's rather neat backup
>> program "obnam" has done that in the past, but I need to check it out
>> again.
>>
>> "shatag" looks promising!
>> Maybe "cfv"?
>>
>> https://tracker.debian.org/rdfind
>> https://tracker.debian.org/summain
>> https://tracker.debian.org/obnam
>> https://tracker.debian.org/shatag
>> https://tracker.debian.org/cfv
>>
>>> I am looking at writing a tool to record and manage file IDs across
>>> media [1], but doing this right could take quite a while.
>>> [1] https://github.com/gmatht/joshell/tree/master/mass_file_management
>> Nick.
>>
>> I have written something that may help;
> https://github.com/rlp1938/Duplicates
> It's written in C so the usual ./configure && make && sudo make install is
> needed.
>
> It does work across file systems if required.
> There are some optimisations:
> 1. 0 size files are never considered.
> 2. Files with unique sizes are dropped from consideration.
> 3. Files of identical size are dropped if they don't match on the smaller
> of filesize or 128 kb.
> 4. The rest are md5summed and those that have matching sums are output to
> stdout. Redirect to a file of course.
>
> Broken symlinks discovered along the way are output on stderr.
>
> Also:
> https://github.com/rlp1938/Processdups
> That is an interactive program to help you deal with the consequences of
> finding your list of duplicates. It gives you the option of preserving 1
> only of a duplicated group, hard linking them together (if on 1 filesystem,
> symlinking otherwise), deleting all, or just ignoring the group.
>
> Good luck.
> Bob Parker
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