Magic SysRq D

• Systems with "suspend to swap" may suspend the system from the console with Alt-SysRq-D

• Resulting disk images are of a restartable system

• Preserves the most data

• Data Preserved

  • Volatile data and Machine State
  • Non-volatile data

• Data Lost

  • Shadow data

• Potential Risks

  • Some risk of kernel module trojans - none known
  • Some "sensitive" information may end up in swap

• Not available on all systems

Notes: