Class: OsCtld::Commands::Pool::Export
- Includes:
- OsCtl::Lib::Utils::Log, OsCtl::Lib::Utils::System
- Defined in:
- lib/osctld/commands/pool/export.rb
Instance Attribute Summary
Attributes inherited from Base
#client, #client_handler, #id, #opts
Instance Method Summary collapse
- #execute ⇒ Object
- #grab_cts(pool) ⇒ Object protected
- #stop_cts(pool) ⇒ Object protected
Methods inherited from Base
#base_execute, #call_cmd, #call_cmd!, cmd, #error, #error!, handle, #handled, #indirect?, #initialize, #manipulate, #manipulation_holder, #ok, #progress, #request_stop, run, run!
Constructor Details
This class inherits a constructor from OsCtld::Commands::Base
Instance Method Details
#execute ⇒ Object
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# File 'lib/osctld/commands/pool/export.rb', line 11 def execute pool = DB::Pools.find(opts[:name]) error!('pool not imported') unless pool # Check for running containers if !opts[:force] && DB::Containers.get.detect { |ct| ct.pool == pool && ct.running? } error!('the pool has running containers') end manipulate(pool) do # Do not autostart any more containers pool.stop # Disable the pool pool.exclusively { pool.disable } # Grab manipulation locks of all containers grab_cts(pool) unless opts[:grab_containers] === false # Stop all containers if opts[:stop_containers] progress('Stopping all containers') stop_cts(pool) end # Unregister all entities progress('Unregistering users, groups and containers') # Preserve root group root_group = DB::Groups.root(pool) [ DB::Containers, DB::Users, DB::Groups, DB::Repositories, DB::IdRanges, ].each do |klass| klass.get.each do |obj| next if obj.pool != pool if obj.is_a?(User) obj.exclusively { UserControl::Supervisor.stop_server(obj) } if opts[:unregister_users] && opts[:stop_containers] call_cmd!( Commands::User::Unregister, pool: pool.name, name: obj.name ) # When a user with the same name is going to be imported again, # he may have a different ugid than before. All files in his # directory would then have an incorrect owner. syscmd("rm -rf \"#{obj.userdir}\"") end elsif obj.is_a?(Container) Monitor::Master.demonitor(obj) Console.remove(obj) end klass.remove(obj) obj.release_manipulation_lock if obj.is_a?(Container) end end # Remove all cgroups if opts[:stop_containers] progress('Removing cgroups') begin CGroup.rmpath_all(root_group.cgroup_path) rescue SystemCallError # If some of the cgroups are busy, just leave them be end end # Regenerate /etc/sub{u,g}ids and lxc-usernet call_cmd!(Commands::User::SubUGIds) call_cmd!(Commands::User::LxcUsernet) # Close history History.close(pool) # Remove pool from the database DB::Pools.remove(pool) ok end end |
#grab_cts(pool) ⇒ Object (protected)
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# File 'lib/osctld/commands/pool/export.rb', line 103 def grab_cts(pool) progress('Grabbing all containers') cts = DB::Containers.get.select { |ct| ct.pool == pool } loop do cts.delete_if do |ct| begin ct.acquire_manipulation_lock(self) true rescue ResourceLocked => e progress(e.) false end end break if cts.empty? sleep(1) end end |
#stop_cts(pool) ⇒ Object (protected)
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# File 'lib/osctld/commands/pool/export.rb', line 124 def stop_cts(pool) # Sort containers by reversed autostart priority -- containers with # the lowest priority are stopped first cts = DB::Containers.get.select { |ct| ct.pool == pool } cts.sort! do |a, b| if a.autostart && b.autostart a.autostart <=> b.autostart elsif a.autostart -1 elsif b.autostart 1 else 0 end end cts.reverse! total = cts.count done = 0 mutex = Mutex.new plan = ExecutionPlan.new cts.each { |ct| plan << ct } plan.run(pool.parallel_stop) do |ct| mutex.synchronize do done += 1 progress( "[#{done}/#{total}] "+ (ct.ephemeral? ? 'Deleting ephemeral container' : 'Stopping container')+ " #{ct.ident}" ) end if ct.ephemeral? call_cmd!( Commands::Container::Delete, pool: pool.name, id: ct.id, force: true, progress: false, manipulation_lock: 'ignore', ) else call_cmd!( Commands::Container::Stop, pool: pool.name, id: ct.id, progress: false, manipulation_lock: 'ignore', ) end end plan.wait end |