[gpfsug-discuss] gpfsug-discuss Digest, Vol 28, Issue 8 (Pavel Pokorny)

Tue May 13 15:35:25 BST 2014

Hello,
just to clarify. Customer need is very easy: Deny storing selected files
extension in specific filesets.
I also don't like the way to direct placement to metadata only pool. I also
know that small filse can actually be stored there.
I will appreciate more help how to make it. I don't think that expalanation
to customer that his need is stupid, is a good approach to the customer.
If there is or not .divx extension is not important, we care about GPFS
stuff and the extensions were selected by customer.
Thank you, Pavel

--
Ing. Pavel Pokorný
DATERA s.r.o. | Ovocný trh 580/2 | Praha | Czech Republic
www.datera.cz | Mobil: +420 602 357 194 | E-mail: pavel.pokorny at datera.cz

On Tue, May 13, 2014 at 7:00 PM, <gpfsug-discuss-request at gpfsug.org> wrote:

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>    1. Re: gpfsug-discuss Digest, Vol 28, Issue 6 (Jonathan Buzzard)
>    2. Re: gpfsug-discuss Digest, Vol 28, Issue 6 (Zachary Giles)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 12 May 2014 12:12:19 +0100
> From: Jonathan Buzzard <jonathan at buzzard.me.uk>
> To: gpfsug-discuss at gpfsug.org
> Subject: Re: [gpfsug-discuss] gpfsug-discuss Digest, Vol 28, Issue 6
> Message-ID: <1399893139.27622.11.camel at buzzard.phy.strath.ac.uk>
> Content-Type: text/plain; charset="UTF-8"
>
> On Mon, 2014-05-12 at 10:46 +0800, Pavel Pokorny wrote:
> > Hello,
> > after discussion with Marc A Kaplan from IBM I finished with this
> > solution. So I am sharing it with all other user just in case you need
> > it in future.
> >
> >
> > Example placement policy file:
> >
> >
> > /* --- Enable .avi so it will not be denied by default --- */
> > RULE 'enable_avi' SET POOL 'data' FOR FILESET (nfsexport) WHERE
> > RegEx(lower(name),['\.avi$'])
> >
> >
> > /* --- Deny all following extensions --- */
> > RULE 'deny_files' SET POOL 'system' FOR FILESET (nfsexport) WHERE
> > RegEx(lower(name),['\.avi$|\.mp[ae1234]$|\.mpe?g[23]?$|\.eml$|\.idx$|
> > \.mbo?x$|\.msg$|\.ost$|\.otf$|\.pab$|\.pst$|\.aac$|\.aif*$|\.as[fx]$|
> > \.au$|\.flac$|\.m3u$|\.midi?$|\.mov$|\.ogg$|\.qtw?$|\.ram$|\.rmi?$|
> > \.rmvb$|\.snd$|\.swf$|\.vob$|\.wa[vx]$|\.wm[av]$|\.wvx$|\.bmp$|\.dib$|
> > \.eps$|\.gif$|\.img$|\.jfif$|\.jpe?g?$|\.pcx$|\.png$|\.psd?$|\.raw$|
> > \.if$|\.spiff$|\.tif*$'])
> >
>
> To demonstrate why this is a wack-a-mole exercise, as a user of your
> system I will just save in iPod friendly format, all my audio AAC
> encoded in .m4a files, all my video H.264 encoded in .m4v files, and my
> audiobooks in .m4b format :-)
>
> I would further note that it is rather trivial to pick a random
> extension say .sdf and associate that with just about any program, most
> of which examine the contents of the file and don't rely on the
> extension.
>
> Further noting if you are continuing in your wack-a-mole exercise I
> could use .divx which you have conveniently not blocked.
>
> Finally being the resourceful sort I will just embed it all in a PDF, or
> word document, or powerpoint, or ...
>
> I don't know exactly what your customer is expecting, but this sounds
> like a management idea, with little understanding of how things work in
> the real world.
>
>
> JAB.
>
> --
> Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
> Fife, United Kingdom.
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 12 May 2014 10:02:04 -0400
> From: Zachary Giles <zgiles at gmail.com>
> To: gpfsug main discussion list <gpfsug-discuss at gpfsug.org>
> Subject: Re: [gpfsug-discuss] gpfsug-discuss Digest, Vol 28, Issue 6
> Message-ID:
>         <CAMYZk=
> f5aQYqtm_hGJbc7EBqcKJXPi_RPynP6PcwEnUUN0z8Tg at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> To further the wack-a-mole problem:
> If you set those extensions to be in the system pool and assume the
> system pool has no data-disks, it is still possible for GPFS 3.5 to
> create a file in the system pool if one is utilizing the
> small-files-in-metadata feature (whatever it's called now) and if the
> file is 0-3.9K in size where it will be stored in the xattrs.
> So, this only works for mp3's >3.9K :) Probably OK for mp3's but not
> if, say, you wanted to restrict .txt files, which are often that
> small.
>
>
>
> On Mon, May 12, 2014 at 7:12 AM, Jonathan Buzzard
> <jonathan at buzzard.me.uk> wrote:
> > On Mon, 2014-05-12 at 10:46 +0800, Pavel Pokorny wrote:
> >> Hello,
> >> after discussion with Marc A Kaplan from IBM I finished with this
> >> solution. So I am sharing it with all other user just in case you need
> >> it in future.
> >>
> >>
> >> Example placement policy file:
> >>
> >>
> >> /* --- Enable .avi so it will not be denied by default --- */
> >> RULE 'enable_avi' SET POOL 'data' FOR FILESET (nfsexport) WHERE
> >> RegEx(lower(name),['\.avi$'])
> >>
> >>
> >> /* --- Deny all following extensions --- */
> >> RULE 'deny_files' SET POOL 'system' FOR FILESET (nfsexport) WHERE
> >> RegEx(lower(name),['\.avi$|\.mp[ae1234]$|\.mpe?g[23]?$|\.eml$|\.idx$|
> >> \.mbo?x$|\.msg$|\.ost$|\.otf$|\.pab$|\.pst$|\.aac$|\.aif*$|\.as[fx]$|
> >> \.au$|\.flac$|\.m3u$|\.midi?$|\.mov$|\.ogg$|\.qtw?$|\.ram$|\.rmi?$|
> >> \.rmvb$|\.snd$|\.swf$|\.vob$|\.wa[vx]$|\.wm[av]$|\.wvx$|\.bmp$|\.dib$|
> >> \.eps$|\.gif$|\.img$|\.jfif$|\.jpe?g?$|\.pcx$|\.png$|\.psd?$|\.raw$|
> >> \.if$|\.spiff$|\.tif*$'])
> >>
> >
> > To demonstrate why this is a wack-a-mole exercise, as a user of your
> > system I will just save in iPod friendly format, all my audio AAC
> > encoded in .m4a files, all my video H.264 encoded in .m4v files, and my
> > audiobooks in .m4b format :-)
> >
> > I would further note that it is rather trivial to pick a random
> > extension say .sdf and associate that with just about any program, most
> > of which examine the contents of the file and don't rely on the
> > extension.
> >
> > Further noting if you are continuing in your wack-a-mole exercise I
> > could use .divx which you have conveniently not blocked.
> >
> > Finally being the resourceful sort I will just embed it all in a PDF, or
> > word document, or powerpoint, or ...
> >
> > I don't know exactly what your customer is expecting, but this sounds
> > like a management idea, with little understanding of how things work in
> > the real world.
> >
> >
> > JAB.
> >
> > --
> > Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
> > Fife, United Kingdom.
> >
> >
> > _______________________________________________
> > gpfsug-discuss mailing list
> > gpfsug-discuss at gpfsug.org
> > http://gpfsug.org/mailman/listinfo/gpfsug-discuss
>
>
>
> --
> Zach Giles
> zgiles at gmail.com
>
>
> ------------------------------
>
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>
> End of gpfsug-discuss Digest, Vol 28, Issue 8
> *********************************************
>
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