Awesome

DiskID

Get info from a virtual disk file.

$ diskid micro-frameos.vmdk

diskid.frameos.org

file name: micro-frameos.vmdk
file format: vmdk
virtual size: 1.2G (1287651328 bytes)
disk size: 274M (287593984 bytes)

Installation

gem install diskid

diskid needs curl and head commands available in your system.

Internet access is also required, as diskid sends a few bytes to http://diskid.frameos.org to identify the disk.

Usage

diskid --help

EXAMPLES

Identify a VMDK:

$ diskid ubuntu64-1104.vmdk

diskid.frameos.org

file name: ubuntu64-1104.vmdk
file format: vmdk
virtual size: 9.0G 
variant: streamOptimized
disk size: 319M

PROTIP: You don't need to install diskid to use the service

head -n 20 ubuntu64-1104.vmdk > /tmp/dchunk && curl -X POST -F chunk=@/tmp/dchunk http://diskid.frameos.org/?format=text

Identify a VMDK and print JSON output:

$ diskid --format json ubuntu64-1104.vmdk

diskid.frameos.org

{"file_name":"ubuntu64-1104.vmdk","format":"vmdk", "variant":"streamOptimized", "virtual_size":"9.0G","disk_size":"319M"}

Valid output formats:

json
text
xml

Identify a virtual disk without using the diskid.frameos.org web service (needs qemu-img installed locally):

$ diskid --local ubuntu64-1104.vmdk
file_name: ubuntu64-1104.vmdk
format: vmdk
variant: monolithicSparse
virtual_size: 9.0G
disk_size: 319M

NERD STUFF

DiskID Webservice is a thin wrapper around the bleeding edge version of qemu-img from the QEMU project: http://qemu.org

All the magic happens there!