Fix BEADM DESTROY for 'static' boot environments.

beadm

@@ -70,6 +70,25 @@ __be_mounted() { # 1=BE
   mount 2> /dev/null | grep -q -E "^${1} " 2> /dev/null
 }
 
+# check if boot environment is a clone
+__be_clone() { # 1=DATASET
+  if zfs list sys/ROOT/static 1> /dev/null 2> /dev/null
+  then
+    local ORIGIN="$( zfs list -H -o origin ${1} )"
+    if [ "${ORIGIN}" = "-" ]
+    then
+      # boot environment is not a clone
+      return 1
+    else
+      # boot environment is a clone
+      return 0
+    fi
+  else
+    # boot environment does not exist
+    return 2
+  fi
+}
+
 # create new boot environment
 __be_new() { # 1=SOURCE 2=TARGET
   local SOURCE=$( echo ${1} | cut -d '@' -f 1 )
@@ -364,6 +383,8 @@ EOF
             exit 1
           fi
         else
+          if __be_clone ${POOL}/ROOT/${DESTROY}
+          then
             # promote clones dependent on snapshots used by destroyed boot environment
             zfs list -H -t all -o name,origin \
               | while read NAME ORIGIN
@@ -375,8 +396,11 @@ EOF
                 done
             # get origins used by destroyed boot environment
             ORIGIN_SNAPSHOTS=$( zfs list -H -t all -o origin -r ${POOL}/ROOT/${DESTROY} | grep -v '^-$' | awk -F "@" '{print $2}' | sort -u )
+          fi
           # destroy boot environment
           zfs destroy -r ${POOL}/ROOT/${DESTROY}
+          if __be_clone ${POOL}/ROOT/${DESTROY}
+          then
             # promote datasets dependent on origins used by destroyed boot environment
             ALL_ORIGINS=$( zfs list -H -t all -o name,origin )
             echo "${ORIGIN_SNAPSHOTS}" \
@@ -403,6 +427,7 @@ EOF
                       done
                 done
           fi
+        fi
         echo "Destroyed successfully"
         ;;
       (*)