Reinitialize Live Upgrade Now Made Easy

/reinitialize-live-upgrade-now-made-easy 2012-07-25T13:10:08+01:00

The latest Live Upgrade patch (121430-81 / 121431-82) came out last night and in it we get some nice new functionality: you can now re-initialize your live upgrade configuration in one simple command.

To re-initialize your Live Upgrade configuration, you used to have to run through the process I documented in Doc ID 1417657.1. With 121430-81 / 121431-82, you no longer need to follow that document, you can simply use ludelete(1M) with its two new arguments:

     -R              Delete all the Alternate  Boot Environments 
                     (ABEs) present in the system.
                     Reinstate the system back to a state  where 
                     no ABEs  are present  in the system. The -R 
                     option would  ask for  confirmation  before 
                     proceeding to delete all the ABEs.

     -F              Forceful deletion of a BE even if  it is the
                     last  BE on that disk.   This  option can be 
                     used with a single BE  or with  -R option to 
                     delete  all the ABEs.    When  used with  -R 
                     option, it forcefully deletes all  Alternate 
                     BEs   in the   system   without   asking for 
                     confirmation.

Unfortunately the lu*(1M) man pages haven't been updated yet, but the above will appear in them when they are updated, probably with different spacing.

So lets take this new functionality for a spin...

# showrev -p | grep "^Patch: 121430-81"
Patch: 121430-81 Obsoletes: 121435-04, 121437-02 Requires:  Incompatibles:  Packages: SUNWlur, SUNWluu, SUNWlucfg
#
#
# lustatus
Boot Environment           Is       Active Active    Can    Copy      
Name                       Complete Now    On Reboot Delete Status    
-------------------------- -------- ------ --------- ------ ----------
s10s_u10wos_17b            yes      yes    yes       no     -         
Jul12_CPU                  yes      no     no        yes    -       
#
#
# lufslist s10s_u10wos_17b
               boot environment name: s10s_u10wos_17b
               This boot environment is currently active.
               This boot environment will be active on next system boot.

Filesystem              fstype    device size Mounted on          Mount Options
----------------------- -------- ------------ ------------------- --------------
/dev/zvol/dsk/rpool/swap swap        536870912 -                   -
rpool/ROOT/s10s_u10wos_17b zfs        5170458112 /                   -
rpool/export            zfs         279652352 /export             -
rpool/export/home       zfs             31744 /export/home        -
rpool                   zfs        7080212480 /rpool              -
#
#
# lufslist Jul12_CPU
               boot environment name: Jul12_CPU

Filesystem              fstype    device size Mounted on          Mount Options
----------------------- -------- ------------ ------------------- --------------
/dev/zvol/dsk/rpool/swap swap        536870912 -                   -
rpool/ROOT/Jul12_CPU    zfs            414208 /                   -
rpool/export            zfs         279652352 /export             -
rpool/export/home       zfs             31744 /export/home        -
rpool                   zfs        7080212480 /rpool              -
#
#
# zfs list
NAME                                   USED  AVAIL  REFER  MOUNTPOINT
rpool                                 6.59G  13.0G   106K  /rpool
rpool/ROOT                            4.82G  13.0G    31K  legacy
rpool/ROOT/Jul12_CPU                   404K  13.0G  4.82G  /
rpool/ROOT/s10s_u10wos_17b            4.82G  13.0G  4.82G  /
rpool/ROOT/s10s_u10wos_17b@Jul12_CPU   174K      -  4.82G  -
rpool/dump                            1.00G  13.0G  1.00G  -
rpool/export                           267M  13.0G   267M  /export
rpool/export/home                       31K  13.0G    31K  /export/home
rpool/swap                             528M  13.4G  86.3M  -
#
#
# ludelete -R
	This utility will reset the Live Upgrade subsystem back to clean
	install on the current BE.
	All other Boot Environments, history and customizations will be
	removed and reset.

	Press Y if you really want continue.
Y
INFORMATION: Checking the BE configurations.
INFORMATION: Getting the BE list to be destroyed

INFORMATION: If some redundant zfs datasets remain for BE , please destroy them manually
INFORMATION: Deleting the Boot Environment Jul12_CPU
Updating boot environment configuration database.
Updating boot environment description database on all BEs.
Updating all boot environment configuration databases.
#
#
# lustatus
ERROR: No boot environments are configured on this system
ERROR: cannot determine list of all boot environment names
#
#
# zfs list
NAME                         USED  AVAIL  REFER  MOUNTPOINT
rpool                       6.59G  13.0G   106K  /rpool
rpool/ROOT                  4.82G  13.0G    31K  legacy
rpool/ROOT/s10s_u10wos_17b  4.82G  13.0G  4.82G  /
rpool/dump                  1.00G  13.0G  1.00G  -
rpool/export                 267M  13.0G   267M  /export
rpool/export/home             31K  13.0G    31K  /export/home
rpool/swap                   528M  13.4G  86.3M  -
#

So what has this done? It's completely removed all traces of my live upgrade configuration from /etc/lutab (this file is actually deleted) and the files in /etc/lu/. It has also removed any ZFS datasets directly associated with my boot environments. It has also updated my OBP aliases (and GRUB if I were using x86) to only show the currently active boot environment. Essentially my system now looks as it would if you'd never configured Live Upgrade on it.

This is great news and is something we've been wanting for a while now. Sadly it means my document is now obsolete :-( . Oh well, I'll be writing plenty more.

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