Class: OsCtld::CGroup::ContainerParams
- Inherits:
-
Params
- Object
- Params
- OsCtld::CGroup::ContainerParams
show all
- Defined in:
- lib/osctld/cgroup/container_params.rb
Instance Attribute Summary
Attributes inherited from Params
#owner, #params
Instance Method Summary
collapse
Methods inherited from Params
#apply_params, #apply_params_and_retry, #detect, #dump, #dup, #each, #each_usable, #each_version, #find_cpu_limit, #find_memory_limit, #find_swap_limit, #import, #initialize, load, #replace, #reset_value, #unset, #usable_params
Methods included from Lockable
#exclusively, included, #inclusively, #init_lock, #lock, #unlock
Instance Method Details
#apply(keep_going: false) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 12
def apply(keep_going: false, &)
super
return unless owner.running?
apply_container_params_and_retry(usable_params, keep_going:, &)
end
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#apply_container_params(param_list, keep_going: false) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 99
def apply_container_params(param_list, keep_going: false)
failed = []
param_list.each do |p|
path = File.join(
yield(p.subsystem),
'user-owned',
"lxc.payload.#{owner.id}",
p.name
)
begin
failed << p unless CGroup.set_param(path, p.value)
rescue CGroupFileNotFound
next
end
end
failed
end
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#apply_container_params_and_retry(param_list, keep_going: false) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 120
def apply_container_params_and_retry(param_list, keep_going: false, &)
failed = apply_container_params(
param_list,
keep_going:,
&
).select { |p| p.name.start_with?('memory.') }
return unless failed.any?
apply_container_params(failed, keep_going:, &)
end
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#reset(param, keep_going) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 19
def reset(param, keep_going, &)
super
return unless owner.running?
reset_container_param(param, keep_going, &)
end
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#reset_container_param(param, keep_going) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 132
def reset_container_param(param, keep_going)
v = reset_value(param)
return unless v
path = File.join(
yield(param.subsystem),
'user-owned',
"lxc.payload.#{owner.id}",
param.name
)
CGroup.set_param(path, v)
rescue CGroupFileNotFound
raise unless keep_going
log(
:info,
:cgroup,
"Skip #{path}, group or parameter does not exist"
)
end
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#set(*args, **kwargs) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 5
def set(*args, **kwargs)
owner.exclusively do
super
owner.lxc_config.configure_cgparams
end
end
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#temporarily_expand_memory(percent: 50) ⇒ Object
Temporarily expand container memory by given percentage
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# File 'lib/osctld/cgroup/container_params.rb', line 27
def temporarily_expand_memory(percent: 50)
return unless owner.running?
if CGroup.v1?
temporarily_expand_memory_v1(percent:)
else
temporarily_expand_memory_v2(percent:)
end
end
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#temporarily_expand_memory_v1(percent:) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 39
def temporarily_expand_memory_v1(percent:)
mem_limit = each_usable.detect { |p| p.name == 'memory.limit_in_bytes' }
memsw_limit = each_usable.detect { |p| p.name == 'memory.memsw.limit_in_bytes' }
tmp_params = [mem_limit, memsw_limit].map do |p|
next if p.nil?
cur_limit = p.value.last.to_i
new_limit = (cur_limit + (cur_limit / 100.0 * percent)).round
CGroup::Param.new(1, 'memory', p.name, [new_limit], false)
end
tmp_params.compact!
return if tmp_params.empty?
return unless owner.running?
apply_params_and_retry(tmp_params, keep_going: true) do |subsystem|
owner.abs_apply_cgroup_path(subsystem)
end
apply_container_params_and_retry(tmp_params, keep_going: true) do |subsystem|
owner.abs_apply_cgroup_path(subsystem)
end
nil
end
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#temporarily_expand_memory_v2(percent:) ⇒ Object
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# File 'lib/osctld/cgroup/container_params.rb', line 73
def temporarily_expand_memory_v2(percent:)
memory_max = each_usable.detect { |p| p.name == 'memory.max' }
return if memory_max.nil?
cur_limit = memory_max.value.last.to_i
new_limit = (cur_limit + (cur_limit / 100.0 * percent)).round
new_param = CGroup::Param.new(2, 'memory', 'memory.max', [new_limit], false)
return unless owner.running?
apply_params_and_retry([new_param], keep_going: true) do |subsystem|
owner.abs_apply_cgroup_path(subsystem)
end
apply_container_params_and_retry([new_param], keep_going: true) do |subsystem|
owner.abs_apply_cgroup_path(subsystem)
end
nil
end
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