toasters March 2017

toasters@lists.teaparty.net

21 participants
13 discussions

Measurable effects of read_realloc?
by Ehrenwald, Ian 08 Mar '17

08 Mar '17

Hello Is there a way within an SVM (cDOT 8.3.2P5) to observe the results of setting read_realloc to “on” in Oracle database flexvols? I told my DBAs that I’d be enabling this option on a couple eligible flexvols per day to see if we’d benefit from it, and we all are curious to see if it has benefited us. What sort of measurable things would someone see? Decreased latency and increased throughput after a couple weeks of heavy read load? I have OCUM/OCPM and LogicMonitor to view filer-side stats, and my DBAs have OEM to view stats coming from Oracle. Thanks for any hints. -- Ian Ehrenwald Senior Infrastructure Engineer Hachette Book Group, Inc. 1.617.263.1948 / ian.ehrenwald(a)hbgusa.com This may contain confidential material. If you are not an intended recipient, please notify the sender, delete immediately, and understand that no disclosure or reliance on the information herein is permitted. Hachette Book Group may monitor email to and from our network.

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MacOS Sierra and the red bang
by Carl Howell 07 Mar '17

07 Mar '17

Ever since MacOS Sierra came out, we've had quite a few complaints of users getting access denied while accessing CIFS shares on all of our 7-Mode(8.1.4P9) filers. I've seen this behavior myself where you connect to a share and many if not all of the folders will have a red bang on them. Sometimes the red bangs will just disappear, and sometimes you have to reboot/reconnect your Mac to get them to disappear. Has anybody else seen this or have a recommendation on how to resolve this? Thanks, --Carl

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WAFL paper
by Rhodes, Richard L. 07 Mar '17

07 Mar '17

Found a link to this. Algorithms and Data Structures for Efficient Free Space Reclamation in WAFL https://www.usenix.org/system/files/conference/fast17/fast17-kesavan.pdf Rick ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.

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toasters March 2017