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Solaris Volume Manager (SVM): How to Boot from a Detached SVM Submirror on a SPARC System (Doc ID 1508556.1)

Last updated on JANUARY 23, 2019

Applies to:

Sun Solaris Volume Manager (SVM) - Version 11.9.0 to 11.10.0 [Release 11.0]
Solstice DiskSuite Software - Version 4.2 to 4.2.1 [Release 4.0]
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on SPARC (32-bit)

Goal

There may be times when you decide to detach one side of a Solaris Volume Manager (SVM) boot mirror, for example to provide a safety backout copy before applying patches. If all goes well, you can reattach the detached submirrors. If however there is a need to boot from the disk with the detached submirrors, the system must be prepared to do so.

This article describes the steps to take when you wish to boot an SPARC system from a disk containing detached submirrors for the Solaris operating system. The assumption is that the system has been mirrored correctly according to <Document 1011940.1> Solaris Volume Manager (SVM) - How To Mirror The Root Disk

The term "unencapsulation" is sometimes used to refer to this procedure. The notion of encapsulation or unencapsulation properly refers to actions in Veritas Volume Manager, which can either initialize or encapsulate a disk to gain control. In Veritas language, encapsulation refers to a method of taking control of a disk while retaining its content, and initialization takes control without retaining content. SVM uses a different method to take control of disks and makes no such distinction. The used term for SVM is 'mirror' and 'unmirror' the boot disks.

If you have a x86 system then follow:
<Document 1482284.1> Solaris Volume Manager (SVM): How to Boot from a Detached SVM Submirror on an x86 System.

Solution

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In this Document
Goal
Solution
References

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