Solaris 8 Maintenance Update 6 Installation Guide | ||||
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![]() | ![]() | Chapter 3. Backing Out the Solaris 8 Maintenance Update 6 | ![]() | ![]() |
It is best to reboot your system in single-user mode before backing out the MU6. MU6 applies patches to system libraries. Individual systems in a multiuser system will be unstable if any processes have mapped to a patched version of a library and later attempt to map to different sections of the old library.
In single-user mode, network services are not available. If the MU6 image is on the network rather than on a CD, you must copy the MU6 image from the network to your local system before booting your system in single-user mode.
If you cannot reboot the system in single-user mode or if you do not have enough disk space to make a local copy of the MU6 image, you need to back out MU6 using NFS in multiuser mode. In this case, you should have the system in as quiet a state as possible, without users logged on or running jobs.
The backout_mu script provided by MU6 enables you to back out an entire MU.
To back out the Solaris 8 MU6 software:
The CDE login screen appears.
The system prompts you to log in.
login: root password: root password |
# reboot -- -s |
Note - Changing the run level from multiuser mode to single-user mode with the shutdown or init command might leave the vold process running. This process can cause problems when mounting the MU6 CD in single-user mode.
Check that the system displays the following message and is now in system maintenance mode.
Entering System Maintenance Mode Sun Microsystems Inc. SunOS 5.8 Generic Feb 2000 # |
# mount -o ro -F hsfs /dev/dsk/c0t6d0s0 /cdrom |
Note - In some cases, the CD-ROM drive might be on a controller other than c0 or a target other than t6, which would require a different path to the CD-ROM device. Check with your system administrator if you have questions about mounting the CD-ROM drive.
From a local copy of the MU6 image, type:
# cd local_directory # ./backout_mu options |
From the MU6 CD, type:
# cd /cdrom # ./backout_mu options |
Table 3-1. Command-Line Options for backout_mu
Option | Description |
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-q | Disables the display of dots that indicate backout_mu activity. |
-B backoutdir | Specifies an alternate directory in which the information required to back a patch out will be held. |
When the backout is complete, the following message is displayed.
backout_mu completed at date_time. |
# sync ; reboot |
You are then prompted for a login.
Note - To prevent the library conflict problem, you must reboot your system after backing out MU6 .
login: login password: password |
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Backing Out the Solaris 8 Maintenance Update 6 | ![]() | Known Problems |