# Fact: blockdevice_<devicename>_size # # Purpose: # Return the size of a block device in bytes # # Resolution: # Parse the contents of /sys/block/<device>/size to receive the size (multiplying by 512 to correct for blocks-to-bytes) # # Caveats: # Only supports Linux 2.6+ at this time, due to the reliance on sysfs # # Fact: blockdevice_<devicename>_vendor # # Purpose: # Return the vendor name of block devices attached to the system # # Resolution: # Parse the contents of /sys/block/<device>/device/vendor to retrieve the vendor for a device # # Caveats: # Only supports Linux 2.6+ at this time, due to the reliance on sysfs # # Fact: blockdevice_<devicename>_model # # Purpose: # Return the model name of block devices attached to the system # # Resolution: # Parse the contents of /sys/block/<device>/device/model to retrieve the model name/number for a device # # Caveats: # Only supports Linux 2.6+ at this time, due to the reliance on sysfs # # Fact: blockdevices # # Purpose: # Return a comma seperated list of block devices # # Resolution: # Retrieve the block devices that were identified and iterated over in the creation of the blockdevice_ facts # # Caveats: # Block devices must have been identified using sysfs information # # Author: Jason Gill <jasongill@gmail.com> require 'facter' # Only Linux 2.6+ kernels support sysfs which is required to easily get device details if Facter.value(:kernel) == 'Linux' sysfs_block_directory = '/sys/block/' blockdevices = [] # This should prevent any non-2.6 kernels or odd machines without sysfs support from being investigated further if File.exist?(sysfs_block_directory) # Iterate over each file in the /sys/block/ directory and skip ones that do not have a device subdirectory Dir.entries(sysfs_block_directory).each do |device| sysfs_device_directory = sysfs_block_directory + device + "/device" next unless File.exist?(sysfs_device_directory) # Add the device to the blockdevices list, which is returned as it's own fact later on blockdevices << device sizefile = sysfs_block_directory + device + "/size" vendorfile = sysfs_device_directory + "/vendor" modelfile = sysfs_device_directory + "/model" if File.exist?(sizefile) Facter.add("blockdevice_#{device}_size".to_sym) do setcode { IO.read(sizefile).strip.to_i * 512 } end end if File.exist?(vendorfile) Facter.add("blockdevice_#{device}_vendor".to_sym) do setcode { IO.read(vendorfile).strip } end end if File.exist?(modelfile) Facter.add("blockdevice_#{device}_model".to_sym) do setcode { IO.read(modelfile).strip } end end end end # Return a comma-seperated list of block devices found unless blockdevices.empty? Facter.add(:blockdevices) do setcode { blockdevices.sort.join(',') } end end end