How to convert a striped or concatenated rpool back to a mirrored rpool
Last updated on JULY 29, 2016
Applies to:
Solaris Operating System - Version 10 6/06 U2 to 10 9/10 U9 [Release 10.0]Information in this document applies to any platform.
Goal
When using ZFS for the root file system, it is highly recommended that the root pool (rpool) consist of a mirrored configuration. The basic mirrored configuration consists of 2 disks. However, some situation may occur where the rpool could end up with concatenated or striped disks.
(For example, if a disk is removed from the rpool to perform some type of maintenance function but is then incorrectly returned to the rpool such that the mirrored configuration is destroyed and a concatenated configuration is created, instead.)
The goal of this document is to provide the necessary steps for returning the configuration back to the recommended mirrored configuration.
Solution
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