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System Administration Guide: Basic Administration

Procedurex86: How to Initiate a Fast Reboot of the System

This procedure describes how to use the reboot command with -f option to initiate a fast reboot of an x86 based system.

  1. Become superuser or assume an equivalent role.

  2. Initiate a fast reboot of the system:

    • To reboot to a new kernel, you would type:


      # reboot -f -- '/platform/i86pc/new-kernel-name/amd64/unix -k'

    • To initiate a fast reboot using boot arguments from the previous boot, you would type:


      # reboot -f
    Note –

    The boot archive is derived from the kernel argument. In the event of a failure in the fast reboot path, such as insufficient memory, the normal reset path is used.

Example 12–14 x86: Using Fast Reboot to Reboot a 64-Bit Kernel


# reboot -f -- '/platform/i86pc/kernel/amd64/unix'
Oct 21 15:06:35 tonyspizza reboot: initiated by ... on /dev/console
Oct 21 15:06:36 /usr/lib/snmp/snmpdx: received signal 15
Fast reboot.
syncing file systems... done
SunOS Release 5.11 Version onnv-gate:2008-10-20 64-bit
Copyright 1983-2008 Sun Microsystems, Inc.  All rights reserved.
Use is subject to license terms.
DEBUG enabled
Hostname: tonyspizza
NIS domain name is lab.sfbay.sun.com
/dev/rdsk/c1d0s7 is clean
Reading ZFS config: done.
Example 12–15 x86: Using Fast Reboot Without Additional Boot Arguments

This example fast reboots a system using the boot arguments that were used for the previous boot.


# reboot -f
Oct 21 15:02:38 tonyspizza reboot: initiated by ... on /dev/console
Oct 21 15:02:38 tonyspizza rpcbind: rpcbind terminating on signal.
Oct 21 15:02:38 tonyspizza syslogd: going down on signal 15
Fast reboot.
syncing file systems... done
Loading kmdb...
SunOS Release 5.11 Version onnv-gate:2008-10-20 64-bit
Copyright 1983-2008 Sun Microsystems, Inc.  All rights reserved.
Use is subject to license terms.
DEBUG enabled
Hostname: tonyspizza
NIS domain name is mpklab.sfbay.sun.com
/dev/rdsk/c1d0s7 is clean
Reading ZFS config: done.