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Oracle Solaris 10 8/11 Installation Guide: Live Upgrade and Upgrade Planning Oracle Solaris 10 8/11 Information Library |
Part I Upgrading With Live Upgrade
1. Where to Find Oracle Solaris Installation Planning Information
4. Using Live Upgrade to Create a Boot Environment (Tasks)
5. Upgrading With Live Upgrade (Tasks)
6. Failure Recovery: Falling Back to the Original Boot Environment (Tasks)
SPARC: Falling Back to the Original Boot Environment
SPARC: To Fall Back Despite Successful New Boot Environment Activation
SPARC: To Fall Back From a Failed Boot Environment Activation
SPARC: To Fall Back to the Original Boot Environment by Using a DVD, CD, or Net Installation Image
x86: Falling Back to the Original Boot Environment
x86: To Fall Back Despite Successful New Boot Environment Activation With the GRUB Menu
x86: To Fall Back From a Failed Boot Environment Activation With the GRUB Menu
x86: To Fall Back From a Failed Boot Environment Activation With the GRUB Menu and the DVD or CD
7. Maintaining Live Upgrade Boot Environments (Tasks)
8. Upgrading the Oracle Solaris OS on a System With Non-Global Zones Installed
10. Live Upgrade (Command Reference)
Part II Upgrading and Migrating With Live Upgrade to a ZFS Root Pool
11. Live Upgrade and ZFS (Overview)
12. Live Upgrade for ZFS (Planning)
13. Creating a Boot Environment for ZFS Root Pools
14. Live Upgrade For ZFS With Non-Global Zones Installed
B. Additional SVR4 Packaging Requirements (Reference)
To fall back to the original boot environment, choose the procedure the best fits your circumstances.
x86: To Fall Back Despite Successful New Boot Environment Activation With the GRUB Menu
x86: To Fall Back From a Failed Boot Environment Activation With the GRUB Menu
x86: To Fall Back From a Failed Boot Environment Activation With the GRUB Menu and the DVD or CD
Use this procedure when you have successfully activated your new boot environment, but are dissatisfied with the results. You can quickly switch back to the original boot environment by using the GRUB, a feature of Oracle Solaris, menu.
Note - The boot environments that are being switched must be GRUB boot environments that were created with GRUB software. If a boot environment was created with the Solaris 8, Solaris 9, or Solaris 10 3/05 release, the boot environment is not a GRUB boot environment.
Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.
# init 6
The GRUB menu is displayed. The Oracle Solaris OS is the original boot environment. The second_disk boot environment was successfully activated and appears on the GRUB menu. The failsafe entries are for recovery if for some reason the primary entry does not boot.
GNU GRUB version 0.95 (616K lower / 4127168K upper memory) +-------------------------------------------------------------------+ |Solaris | |Solaris failsafe | |second_disk | |second_disk failsafe | +-------------------------------------------------------------------+ Use the ^ and v keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting, or 'c' for a command-line.
Example 6-1 To Fall Back Despite Successful New Boot Environment Activation
# su # init 6
GNU GRUB version 0.95 (616K lower / 4127168K upper memory) +-------------------------------------------------------------------+ |Solaris | |Solaris failsafe | |second_disk | |second_disk failsafe | +-------------------------------------------------------------------+ Use the ^ and v keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting, or 'c' for a command-line.
Select the original boot environment, Solaris.
If you experience a failure while booting, use the following procedure to fall back to the original boot environment. In this example, the GRUB menu is displayed correctly, but the new boot environment is not bootable. The device is /dev/dsk/c0t4d0s0. The original boot environment, c0t4d0s0, becomes the active boot environment.
Caution - For the Solaris 10 3/05 release, the recommended action to fall back if the previous boot environment and new boot environment were on different disks included changing the hard disk boot order in the BIOS. Starting with the Solaris 10 1/06 release, changing the BIOS disk order is unnecessary and is strongly discouraged. Changing the BIOS disk order might invalidate the GRUB menu and cause the boot environment to become unbootable. If the BIOS disk order is changed, reverting the order back to the original settings restores system functionality. |
Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.
# init 6
The GRUB menu is displayed.
GNU GRUB version 0.95 (616K lower / 4127168K upper memory) +-------------------------------------------------------------------+ |Solaris | |Solaris failsafe | |second_disk | |second_disk failsafe | +-------------------------------------------------------------------+ Use the ^ and v keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting, or 'c' for a command-line.
The GRUB edit menu is displayed.
root (hd0,2,a) kernel /platform/i86pc/multiboot module /platform/i86pc/boot_archive
The kernel entry is displayed in the GRUB edit menu.
grub edit>kernel /boot/multiboot
The following example notes the placement of the -s option.
grub edit>kernel /boot/multiboot -s
# fsck mount_ point
A root (/) file system that is known and reliable
# mount device_name /mnt
Specifies the location of the root (/) file system on the disk device of the boot environment you want to fall back to. The device name is entered in the form of /dev/dsk/cwtxdysz.
# /mnt/sbin/luactivate
luactivate activates the previous working boot environment and indicates the result.
# umount /mnt
# init 6
The previous working boot environment becomes the active boot environment.
If you experience a failure while booting, use the following procedure to fall back to the original boot environment. In this example, the new boot environment was not bootable. Also, the GRUB menu does not display. The device is /dev/dsk/c0t4d0s0. The original boot environment, c0t4d0s0, becomes the active boot environment.
Caution - For the Solaris 10 3/05 release, the recommended action to fall back if the previous boot environment and new boot environment were on different disks included changing the hard disk boot order in the BIOS. Starting with the Solaris 10 1/06 release, changing the BIOS disk order is unnecessary and is strongly discouraged. Changing the BIOS disk order might invalidate the GRUB menu and cause the boot environment to become unbootable. If the BIOS disk order is changed, reverting the order back to the original settings restores system functionality. |
Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.
# init 6
The GRUB menu is displayed.
GNU GRUB version 0.95 (616K lower / 4127168K upper memory) +-------------------------------------------------------------------------+ |Oracle Solaris 10 8/11 | |Oracle Solaris 10 8/11 Serial Console ttya | |Oracle Solaris 10 8/11 Serial Console ttyb (for lx50, v60x and v65x | +-------------------------------------------------------------------------+ Use the ^ and v keys to select which entry is highlighted. Press enter to boot the selected OS, 'e' to edit the commands before booting, or 'c' for a command-line.
The installation screen is displayed.
+-------------------------------------------------------------------+ | | |Select the type of installation you want to perform: | | | | 1 Solaris Interactive | | 2 Custom JumpStart | | 3 Solaris Interactive Text (Desktop session) | | 4 Solaris Interactive Text (Console session) | | 5 Apply driver updates | | 6 Single user shell | | | | Enter the number of your choice followed by the <ENTER> key.| | Alternatively, enter custom boot arguments directly. | | | | If you wait 30 seconds without typing anything, | | an interactive installation will be started. | +----------------------------------------------------------------- --+
The following message is displayed.
Do you wish to automatically update the boot archive? y /n
Starting shell... #
You are now in single user mode.
# fsck mount_ point
A root (/) file system that is known and reliable
# mount device_name /mnt
Specifies the location of the root (/) file system on the disk device of the boot environment you want to fall back to. The device name is entered in the form of /dev/dsk/cwtxdysz.
# /mnt/sbin/luactivate Do you want to fallback to activate boot environment c0t4d0s0 (yes or no)? yes
luactivate activates the previous working boot environment and indicates the result.
# umount device_name
Specifies the location of the root (/) file system on the disk device of the boot environment you want to fall back to. The device name is entered in the form of /dev/dsk/cwtxdysz.
# init 6
The previous working boot environment becomes the active boot environment.