Solaris Volume Manager (SVM): How to Boot from a Detached SVM Submirror on a x86 System
(Doc ID 1482284.1)
Last updated on APRIL 29, 2024
Applies to:
Solaris Operating System - Version 10 10/08 U6 to 10 8/11 U10 [Release 10.0]Sun Solaris Volume Manager (SVM) - Version 11.10.0 to 11.10.0 [Release 11.0]
Oracle Solaris on x86-64 (64-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 x86 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 1007887.1> Solaris Volume Manager (SVM): root mirroring procedure for Solaris 10 and for x86 Platforms
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.
Solution
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