new instance c5d,c5,m5 - trying to unmount root

[felka]

c5, c5d and m5 has nvme root device. cookbook trying to umount it and fails

 * mount[/] action umount

      ================================================================================
      Error executing action `umount` on resource 'mount[/]'
      ================================================================================

      Mixlib::ShellOut::ShellCommandFailed
      ------------------------------------
      Expected process to exit with [0], but received '1'
      ---- Begin output of umount / ----
      STDOUT:
      STDERR: umount: /: device is busy.
              (In some cases useful info about processes that use
               the device is found by lsof(8) or fuser(1))
      ---- End output of umount / ----
      Ran umount / returned 1

      Cookbook Trace:
      ---------------
      /var/chef/cache/cookbooks/lvm/libraries/provider_lvm_volume_group.rb:119:in `block in create_mount_resource'
      /var/chef/cache/cookbooks/lvm/libraries/provider_lvm_volume_group.rb:108:in `each'
      /var/chef/cache/cookbooks/lvm/libraries/provider_lvm_volume_group.rb:108:in `create_mount_resource'
      /var/chef/cache/cookbooks/lvm/libraries/provider_lvm_volume_group.rb:53:in `action_create'
      /var/chef/cache/cookbooks/compat_resource/files/lib/chef_compat/monkeypatches/chef/runner.rb:78:in `run_action'
      /var/chef/cache/cookbooks/compat_resource/files/lib/chef_compat/monkeypatches/chef/runner.rb:106:in `block (2 levels) in converge'
      /var/chef/cache/cookbooks/compat_resource/files/lib/chef_compat/monkeypatches/chef/runner.rb:106:in `each'
      /var/chef/cache/cookbooks/compat_resource/files/lib/chef_compat/monkeypatches/chef/runner.rb:106:in `block in converge'
      /var/chef/cache/cookbooks/compat_resource/files/lib/chef_compat/monkeypatches/chef/runner.rb:105:in `converge'

      Resource Declaration:
      ---------------------
      # In /var/chef/cache/cookbooks/lvm/libraries/provider_lvm_volume_group.rb

      115:           mount_resource = mount mount_point do
      116:             device pv
      117:             action :nothing
      118:           end
      119:           mount_resource.run_action(:umount)

      Compiled Resource:
      ------------------
      # Declared in /var/chef/cache/cookbooks/lvm/libraries/provider_lvm_volume_group.rb:115:in `block in create_mount_resource'

      mount("/") do
        action [:nothing]
        supports {:remount=>false}
        retries 0
        retry_delay 2
        default_guard_interpreter :default
        mount_point "/"
        device "/dev/nvme0n1p1"
        device_type :device
        fsck_device "-"
        fstype "auto"
        options ["defaults"]
        dump 0
        pass 2
        declared_type :mount
        cookbook_name "ephemeral_lvm"
      end