atrull / ephemeral_raid_cookbook Goto Github PK

When you run your instances or create your autoscaling configuration, in the following case for EC2 m1.xlarge instances, you must specify the four free emphemeral devices like so:

--block-device-mapping "/dev/xvdb=ephemeral0,/dev/xvdc=ephemeral1,/dev/xvdd=ephemeral2,/dev/xvde=ephemeral3"

           Error executing action `create` on resource 'mdadm[/dev/md0]'
           ================================================================================

           Mixlib::ShellOut::ShellCommandFailed
           ------------------------------------
           Expected process to exit with [0], but received '1'
           ---- Begin output of yes | mdadm --create /dev/md0 --level 0 --chunk=256 --metadata=0.90 --raid-devices 4 /dev/xvdb /dev/xvdc #<MonoLogger:0x000000046e5358> #<MonoLogger:0x000000046e5358> ----
       STDOUT:
           STDERR: mdadm: You haven't given enough devices (real or missing) to create this array
           ---- End output of yes | mdadm --create /dev/md0 --level 0 --chunk=256 --metadata=0.90 --raid-devices 4 /dev/xvdb /dev/xvdc #<MonoLogger:0x000000046e5358> #<MonoLogger:0x000000046e5358> ----
       Ran yes | mdadm --create /dev/md0 --level 0 --chunk=256 --metadata=0.90 --raid-devices 4 /dev/xvdb /dev/xvdc #<MonoLogger:0x000000046e5358> #<MonoLogger:0x000000046e5358> returned 1

           Resource Declaration:
           ---------------------
           # In /tmp/kitchen/cache/cookbooks/ephemeral_raid/recipes/makeraid.rb

            36:   mdadm "#{node[:ephemeral][:raid][:device]}" do
            37:     devices ephemeral_devices
            38:     chunk node[:ephemeral][:raid][:chunk_size] if node[:ephemeral][:raid][:chunk_size]
        39:     level 0
            40:     action :create
        41:     notifies :run, "execute[set_readahead_on_device_after_creation]", :immediately
        42:     only_if "which mdadm"
            43:   end
            44: else

           Compiled Resource:
           ------------------
           # Declared in /tmp/kitchen/cache/cookbooks/ephemeral_raid/recipes/makeraid.rb:36:in `from_file'

           mdadm("/dev/md0") do
             action [:create]
             retries 0
         retry_delay 2
             default_guard_interpreter :default
             chunk 256
         devices ["/dev/xvdb", "/dev/xvdc", [#<MonoLogger:0x000000046e5358 @progname=nil, @level=2, @default_formatter=#<Logger::Formatter:0x000000046e5560 @datetime_format=nil>, @formatter=#<Mixlib::Log::Formatter:0x000000046e7b30 @datetime_format=nil>, @logdev=#<MonoLogger::LocklessLogDevice:0x000000046e5628 @shift_size=nil, @shift_age=nil, @filename=nil, @dev=#<IO:<STDOUT>>>>], [#<MonoLogger:0x000000046e5358 @progname=nil, @level=2, @default_formatter=#<Logger::Formatter:0x000000046e5560 @datetime_format=nil>, @formatter=#<Mixlib::Log::Formatter:0x000000046e7b30 @datetime_format=nil>, @logdev=#<MonoLogger::LocklessLogDevice:0x000000046e5628 @shift_size=nil, @shift_age=nil, @filename=nil, @dev=#<IO:<STDOUT>>>>]]
         level 0
             metadata "0.90"
             raid_device "/dev/md0"
         declared_type :mdadm
             cookbook_name "ephemeral_raid"
             recipe_name "makeraid"
         only_if "which mdadm"
           end

bbronosky@prodcass002:~$ ll /dev/md* /dev/nv*
crw------- 1 root root 248, 0 Jul  2 08:19 /dev/nvme0
brw-rw---- 1 root disk 259, 1 Jul  2 08:19 /dev/nvme0n1
crw------- 1 root root 248, 1 Jul  2 08:19 /dev/nvme1
brw-rw---- 1 root disk 259, 0 Jul  2 08:19 /dev/nvme1n1