Solaris Volume Manager (SVM) How to Use Mirrors to Roll Back System Changes (Doc ID 1009418.1)

Last updated on NOVEMBER 09, 2016

Applies to:

Solstice DiskSuite Software - Version 4.2.1 and later
Sun Solaris Volume Manager (SVM) - Version 11.9.0 to 11.10.0 [Release 11.0]
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on SPARC (32-bit)
Oracle Solaris on x86 (32-bit)
Oracle Solaris on x86-64 (64-bit)

Goal

There are many circumstances where major changes are being made to the system, such as a patchset install or OS upgrade, when it would be nice to have the option to undo those changes and revert to a previous system state in case something goes wrong.

With software volume management and a little preparation, it is possible to keep a temporary copy of the boot disk and roll back to it if needed. The boot disk needs to be mirrored.
If it is not mirrored, then consult the Solaris Volume Manager Administration Guide to find the boot disk mirroring procedure.
And:
<Document 1011940.1> Solaris Volume Manager (SVM) How To Mirror the Boot / Root Disk Partitions
<Document 1007887.1> Solaris Volume Manager (SVM) How to Mirror the Boot / Root Disk Partitions for Solaris 10 x86

Solution

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