diff --git a/lib/pve/cli/base.rb b/lib/pve/cli/base.rb
index 9c23cc5..3b244a9 100644
--- a/lib/pve/cli/base.rb
+++ b/lib/pve/cli/base.rb
@@ -2,6 +2,13 @@ require 'pmap'
 
 class PVE::Cli
 
+  def exc2warn dret, exc = Exception
+    yield
+  rescue exc
+    warn "#{$!} (#{$!.class})"
+    dret
+  end
+
   using IPAddress::ToSWithNetmaskForNetworks
 
 def cli_base
@@ -18,8 +25,9 @@ def cli_base
   cli.cmd( :status, "Lists Nodes/VMs/CTs with status", &lambda {|target=nil, sort:, node: nil, status: nil, tags: nil|
     hosting_table target: target, status: status, sort: sort, tags: tags do |push|
       node_opt( node).
-        each( &push).lazy.
-        flat_map {|n| [ Thread.new( n, &:lxc), Thread.new( n, &:qemu) ] }.
+        each( &push).
+        flat_map {|n| [ n.method(:lxc), n.method(:qemu) ] }.
+        flat_pmap {|m| m.call }.
         each {|n| n.value.each &push }
     end
   }).
diff --git a/lib/pve/cli/ct.rb b/lib/pve/cli/ct.rb
index e7debb0..170fad3 100644
--- a/lib/pve/cli/ct.rb
+++ b/lib/pve/cli/ct.rb
@@ -4,16 +4,14 @@ def cli_ct
     ct_cli.cmd :list, "List CT-IDs", aliases: ['ls'], &lambda {|node=nil|
       connect
       nodes = node ? Proxmox::Node.find_by_name( name) : Proxmox::Node.all
-      nodes.flat_map do |n|
-        n.lxc.map {|c| c.vmid.to_i }
+      nodes.flat_pmap do |n|
+        exc2warn( []) { n.lxc.map {|c| c.vmid.to_i } }
       end.sort.each {|c| puts c }
     }
 
     ct_cli.cmd( :status, "Lists CTs with status", aliases: [nil], &lambda {|target=nil, sort: nil, node: nil, status: nil, tags: nil|
       hosting_table target: target, status: status, sort: sort, tags: tags do |push|
-        node_opt( node).lazy.
-          map {|n| Thread.new n, &:lxc }.
-          each {|n| n.value.each &push }
+        node_opt( node).peach {|n| exc2warn( nil) { n.lxc.each &push } }
       end
     }).
       opt( :sort, '-s', '--sort=COLUMNS', "Sort by COLUMNs eg hn for host and name ([s]tatus, h[a], [i]d, [n]ame (default), [h]ost, [u]ptime, [c]pu, [m]em, [d]isk)", default: 'n').
diff --git a/lib/pve/proxmox.rb b/lib/pve/proxmox.rb
index f335140..98b7550 100644
--- a/lib/pve/proxmox.rb
+++ b/lib/pve/proxmox.rb
@@ -173,7 +173,7 @@ module Proxmox
     class <<self
       def __new__ data
         n = allocate
-        n.send :__update__, data
+        n.send :__update__, **data
       end
       private :__new__
 
@@ -194,7 +194,7 @@ module Proxmox
       end
     end
 
-    def __update__ data
+    def __update__ **data
       instance_variables.each do |k|
         remove_instance_variable k
       end
@@ -207,7 +207,7 @@ module Proxmox
     private :__update__
 
     def refresh!
-      __update__ rest_get( @rest_prefix)
+      __update__ **rest_get( @rest_prefix)
     end
   end
 
@@ -301,7 +301,7 @@ module Proxmox
       def refresh!
         d = rest_get @rest_prefix
         d[:starttime] &&= Time.at d[:starttime]
-        __update__ d.merge( node: @node, upid: @upid, task: @task)
+        __update__ **d.merge( node: @node, upid: @upid, task: @task)
       end
 
       def __update__ **data
@@ -406,7 +406,7 @@ module Proxmox
     end
 
     def refresh!
-      __update__ rest_get( "#{@rest_prefix}/status/current").merge( node: @node, t: @t)
+      __update__ **rest_get( "#{@rest_prefix}/status/current").merge( node: @node, t: @t)
     end
 
     def __update__ **data
@@ -701,7 +701,7 @@ module Proxmox
           #}.map {|k,v| "#{k}=#{v}" }.join( ','),
           swap: tmplt.swap,
           unprivileged: tmplt.unprivileged,
-          features: tmplt.features ? Proxmox::hash2cnfstr( tmplt.features) : nil,
+          features: tmplt.features ? Proxmox::hash2cnfstr( *tmplt.features) : nil,
         }.delete_if {|k,v| v.nil? }
 
         temp = LXC.send :__new__, node: node, vmid: options[:vmid], name: name, hostname: options[:hostname]
@@ -763,7 +763,7 @@ module Proxmox
 
     def refresh!
       virt = @virt
-      __update__( {state: nil}.merge( rest_get( "/cluster/ha/resources/#{virt.sid}")).merge( virt: virt))
+      __update__ **{state: nil}.merge( rest_get( "/cluster/ha/resources/#{virt.sid}")).merge( virt: virt)
       self
     rescue RestClient::InternalServerError
       __update__ digest: nil, state: nil, virt: virt
diff --git a/pve.gemspec b/pve.gemspec
index 79680a8..7f35c90 100644
--- a/pve.gemspec
+++ b/pve.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   # PVE-7 based on debian-11, so ruby 2.7 is default.
   # No support for ruby 2.5 anymore (PVE-6 based on debian-10)
   # Old behaviour will be droped.
-  spec.required_ruby_version = Gem::Requirement.new "~> 2.7"
+  spec.required_ruby_version = Gem::Requirement.new ">= 2.7"
 
   spec.metadata["homepage_uri"]    = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage