How to Backup the Operating System Safely in Multi-User Mode Using 'fssnap' and 'ufsdump' (Doc ID 1010745.1)

Last updated on JULY 29, 2016

Applies to:

Solaris Operating System - Version 8 6/00 U1 and later
All Platforms

Goal

This document describes how to backup the Operating System safely in multi-user mode.

When running ufsdump, the file system must be inactive; otherwise, the output of ufsdump may be inconsistent and restoring files correctly may be impossible.
A file system is inactive when it is unmounted or the system is in single user mode. A file system is not considered inactive if one tree of the file system is quiesced while another tree has files or directories being modified.
But sometime it is very difficult to shutdown the system for the Operating System backup.

See 1018781.1 ufsdump(1M) should not be done on a live (mounted) filesystem.

Solution

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