<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:12pt" ><div dir="ltr" >Assuming your metadata storage is not already at its limit of throughput you may get improved performance by temporarily increasing the value of maxBackgroundDeletionThreads. You can check its current value with "mmlsconfig maxBackgroundDeletionThreads" and change it with the command "mmchconfig maxBackgroundDeletionThreads=N -I". Once the removal process is complete you can reset the value back to its previous value.</div>
<div dir="ltr" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10pt" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt" ><div dir="ltr" ><br><font size="2" face="Default Sans Serif,Verdana,Arial,Helvetica,sans-serif" ><span style="font-size:1.143em;" >Fred<br>_______________________________________________________<br>Fred Stock | Spectrum Scale Development Advocacy | 720-430-8821<br>stockf@us.ibm.com</span></font></div></div></div></div>
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<blockquote data-history-content-modified="1" dir="ltr" style="border-left:solid #aaaaaa 2px; margin-left:5px; padding-left:5px; direction:ltr; margin-right:0px" >----- Original message -----<br>From: Ulrich Sibiller <u.sibiller@science-computing.de><br>Sent by: gpfsug-discuss-bounces@spectrumscale.org<br>To: gpfsug-discuss@spectrumscale.org<br>Cc:<br>Subject: [EXTERNAL] Re: [gpfsug-discuss] Quick delete of huge tree<br>Date: Tue, Apr 20, 2021 8:10 AM<br>
<div><font size="2" face="Default Monospace,Courier New,Courier,monospace" >On 4/20/21 1:52 PM, Jan-Frode Myklebust wrote:<br>> A couple of ideas.<br>><br>> The KC recommends adding WEIGHT(DIRECTORY_HASH) to group deletions within a directory. Then maybe > also do it as a 2-step process, in the same policy run. Where you delete all non-directories first,<br>> and then deletes the directories in a depth-first order using WEIGTH(Length(PATH_NAME)):<br>><br>><br>> RULE 'delnondir' DELETE<br>> WEIGHT(DIRECTORY_HASH)<br>> DIRECTORIES_PLUS<br>> WHERE PATH_NAME LIKE '/mypath/%' AND NOT MISC_ATTRIBUTES LIKE '%D%'<br>><br>> RULE 'deldir' DELETE<br>> DIRECTORIES_PLUS<br>> WEIGHT(Length(PATH_NAME))<br>> WHERE PATH_NAME LIKE '/mypath/%' AND MISC_ATTRIBUTES LIKE '%D%'<br><br><br>Thanks, I am aware of that but it will not really help with my speed concerns.<br><br>Uli<br><br><br>--<br>Dipl.-Inf. Ulrich Sibiller science + computing ag<br>System Administration Hagellocher Weg 73<br>Hotline +49 7071 9457 681 72070 Tuebingen, Germany<br> <a href="https://atos.net/de/deutschland/sc" target="_blank">https://atos.net/de/deutschland/sc</a> <br>--<br>Science + Computing AG<br>Vorstandsvorsitzender/Chairman of the board of management:<br>Dr. Martin Matzke<br>Vorstand/Board of Management:<br>Matthias Schempp, Sabine Hohenstein<br>Vorsitzender des Aufsichtsrats/<br>Chairman of the Supervisory Board:<br>Philippe Miltin<br>Aufsichtsrat/Supervisory Board:<br>Martin Wibbe, Ursula Morgenstern<br>Sitz/Registered Office: Tuebingen<br>Registergericht/Registration Court: Stuttgart<br>Registernummer/Commercial Register No.: HRB 382196<br>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss" target="_blank">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a> </font><br> </div></blockquote>
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