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Oracle ZFS Storage Appliance: How to avoid misalignment when using ASM on Solaris clients (Doc ID 2036559.1)

Last updated on JULY 12, 2019

Applies to:

Sun ZFS Storage 7120 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-2 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-BA - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Goal

From the different ASM documentation available in the web, misalignment issues are not emphasized enough.
One can even find this :
Each disk is formatted and a partition is created starting from 1 cylinder.
The available disks can be seen using the format command as shown below […]

Using cylinder 1 of slice0 will lead to mis-alignments and extra IOs, see the following reference:

Detecting and Resolving Oracle Solaris LUN Alignment Problems

 

Solution

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In this Document
Goal
Solution
References


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