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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">A DMAPI daemon solution puts a dependency on the DMAPI daemon for the file system to be mounted. I think it would be better to have something like what I
requested in the RFE that would hopefully not have this dependency, and would be optional/configurable. I’m sure we would all prefer something that is supported directly by IBM (hence the RFE!)</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Thanks,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">-Bryan</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Ps. Hajo said that he couldn’t access the RFE to vote on it:</span></p>
<p>I would like to support the RFE but i get:</p>
<p>"You cannot access this page because you do not have the proper authority."</p>
<p class="MsoNormal">Cheers </p>
<p class="MsoNormal">Hajo </p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Here is what the RFE website states:</span></p>
<p class="MsoNormal">Bookmarkable URL:<span style="font-size:9.5pt; font-family:"Arial","sans-serif"; color:#333333; border:none windowtext 1.0pt; padding:0in; background:white"><a href="http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=60458"><span style="color:#745285">http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=60458</span></a><br>
A unique URL that you can bookmark and share with others.</span><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> gpfsug-discuss-bounces@gpfsug.org [mailto:gpfsug-discuss-bounces@gpfsug.org]
<b>On Behalf Of </b>Sven Oehme<br>
<b>Sent:</b> Friday, October 10, 2014 11:52 AM<br>
<b>To:</b> gpfsug main discussion list<br>
<b>Subject:</b> Re: [gpfsug-discuss] GPFS RFE promotion</span></p>
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<p class="MsoNormal">The only DMAPI agent i am aware of is a prototype that was written by tridge in 2008 to demonstrate a file based HSM system for GPFS. </p>
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<p class="MsoNormal">its a working prototype, at least it worked in 2008 :-) </p>
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<p class="MsoNormal">you can get the source code from git : </p>
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<p class="MsoNormal"><a href="http://git.samba.org/rsync.git/?p=tridge/hacksm.git;a=summary">http://git.samba.org/rsync.git/?p=tridge/hacksm.git;a=summary</a></p>
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<p class="MsoNormal">just to be clear, there is no Support for this code. we obviously Support the DMAPI interface , but the code that exposes the API is nothing we provide Support for. </p>
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<p class="MsoNormal">thx. Sven</p>
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<p class="MsoNormal">On Fri, Oct 10, 2014 at 9:15 AM, Bryan Banister <<a href="mailto:bbanister@jumptrading.com" target="_blank">bbanister@jumptrading.com</a>> wrote:</p>
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<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">I agree with Ben, I think.</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">I don’t want to use the ILM policy engine as that puts a direct workload against the metadata storage and server resources. We need something out-of-band,
out of the file system operational path.</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Is there a simple DMAPI daemon that would log the file system namespace changes that we could use?</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">If so are there any limitations?</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">And is it possible to set this up in an HA environment?</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Thanks!</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">-Bryan</span></p>
<p class="MsoNormal" style=""><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal" style=""><b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">
<a href="mailto:gpfsug-discuss-bounces@gpfsug.org" target="_blank">gpfsug-discuss-bounces@gpfsug.org</a> [mailto:<a href="mailto:gpfsug-discuss-bounces@gpfsug.org" target="_blank">gpfsug-discuss-bounces@gpfsug.org</a>]
<b>On Behalf Of </b>Ben De Luca<br>
<b>Sent:</b> Friday, October 10, 2014 11:10 AM</span></p>
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<p class="MsoNormal"><br>
<b>To:</b> gpfsug main discussion list<br>
<b>Subject:</b> Re: [gpfsug-discuss] GPFS RFE promotion</p>
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<p class="MsoNormal" style=""> </p>
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<p class="MsoNormal" style="">querying this through the policy engine is far to late to do any thing useful with it</p>
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<p class="MsoNormal" style="">On Fri, Oct 10, 2014 at 11:51 PM, Sven Oehme <<a href="mailto:oehmes@gmail.com" target="_blank">oehmes@gmail.com</a>> wrote:</p>
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<p class="MsoNormal" style="">Ben, </p>
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<p class="MsoNormal" style=""> </p>
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<p class="MsoNormal" style="">to get lists of 'Hot Files' turn File Heat on , some discussion about it is here : <a href="https://www.ibm.com/developerworks/community/forums/html/topic?id=77777777-0000-0000-0000-000014920653" target="_blank">https://www.ibm.com/developerworks/community/forums/html/topic?id=77777777-0000-0000-0000-000014920653</a></p>
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<p class="MsoNormal" style="">thx. Sven</p>
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<p class="MsoNormal" style="">On Fri, Oct 10, 2014 at 8:26 AM, Ben De Luca <<a href="mailto:bdeluca@gmail.com" target="_blank">bdeluca@gmail.com</a>> wrote:</p>
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<p class="MsoNormal" style="">Id like this to see hot files</p>
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<p class="MsoNormal" style=""> </p>
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<p class="MsoNormal" style="">On Fri, Oct 10, 2014 at 11:08 PM, Bryan Banister <<a href="mailto:bbanister@jumptrading.com" target="_blank">bbanister@jumptrading.com</a>> wrote:</p>
<p class="MsoNormal" style="">Hmm... I didn't think to use the DMAPI interface. That could be a nice option. Has anybody done this already and are there any examples we could look at?<br>
<br>
Thanks!<br>
<span style="color:#888888">-Bryan</span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
-----Original Message-----<br>
From: <a href="mailto:gpfsug-discuss-bounces@gpfsug.org" target="_blank">gpfsug-discuss-bounces@gpfsug.org</a> [mailto:<a href="mailto:gpfsug-discuss-bounces@gpfsug.org" target="_blank">gpfsug-discuss-bounces@gpfsug.org</a>] On Behalf Of Phil Pishioneri<br>
Sent: Friday, October 10, 2014 10:04 AM<br>
To: gpfsug main discussion list<br>
Subject: Re: [gpfsug-discuss] GPFS RFE promotion<br>
<br>
On 10/9/14 3:31 PM, Bryan Banister wrote:<br>
><br>
> Just wanted to pass my GPFS RFE along:<br>
><br>
> <a href="http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=6" target="_blank">
http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=6</a><br>
> 0458<br>
><br>
><br>
> *Description*:<br>
><br>
> GPFS File System Manager should provide the option to log all file and<br>
> directory operations that occur in a file system, preferably stored in<br>
> a TSD (Time Series Database) that could be quickly queried through an<br>
> API interface and command line tools. ...<br>
><br>
<br>
The rudimentaries for this already exist via the DMAPI interface in GPFS (used by the TSM HSM product). A while ago this was posted to the IBM GPFS DeveloperWorks forum:<br>
<br>
On 1/3/11 10:27 AM, dWForums wrote:<br>
> Author:<br>
> AlokK.Dhir<br>
><br>
> Message:<br>
> We have a proof of concept which uses DMAPI to listens to and passively logs filesystem changes with a non blocking listener. This log can be used to generate backup sets etc. Unfortunately, a bug in the current DMAPI keeps this approach from working in
the case of certain events. I am told 3.4.0.3 may contain a fix. We will gladly share the code once it is working.<br>
<br>
-Phil<br>
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