utility_scripts/iterate_lkg


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#!/bin/sh
# lkg - last known good

# first remove all other lkg snapshots
zfs destroy zroot/var@lkg         
zfs destroy zroot/var/log@lkg     
zfs destroy zroot/usr@lkg         
zfs destroy zroot/usr/home@lkg    
zfs destroy zroot/ROOT/default@lkg
zfs destroy zroot/ROOT@lkg        
zfs destroy zroot@lkg             

# create new lkg snapshot
zfs snapshot -r zroot@lkg