[Qemu-devel] [PATCH v6 0/6] Obtain dirty bitmap via VM logging

[Sanidhya Kashyap <sanidhya.iiith@gmail.com>]

Hi,

The following patches introduce the support of the dirty bitmap logging and
dumping to a specified file. This patch series addresses the previous issues
raised by David and Eric.

v5 --> v6
* The shared function between migration and log bitmap has been again modified
  (David's advice).
* Again changed the naming conventions for shared state between migration and
  log dirty bitmap (David's and Eric's advice).
* Removed acronyms (Eric's advice).
* Fixed grammatical mistakes and macros (Eric's advice).
* Modified the python script to utilize less memory as well as dump the snapshot
  into a file instead of separate window (David's advice).

v4 --> v5
* Removed the runstates code (Eric's and David's advice).
* Now, using global variable to resolve the issue between migration and
  bitmap dump (David's advice).
* Merged the hmp and qmp interface's patch (Eric's advice).
* Modified the code to support the dynamic change in last_ram_offset (David's
  advice).
* Formatted the strings in the python code i.e. length followed by text
  (David's advice).
* Added some code to generate black and white figure based on the bitmap.
* Modified the shared function to be more generic (David's advice).

v3 --> v4
* Added new qmp interface for information extraction from the bitmap process

v2 --> v3
* Reformatted the code and removed some unnecessary parts.
* Printing block info along with length and offset.
* Changed the functions that were directly using RUN_STATE_RUNNING as state.

v1 --> v2:
* Added two new run states to avoid simultaneous execution of both migration and
  bitmap dump process.
* Removed FILE pointer usage.
* Dumping the data only in machine-readable format.
* Tried to rectify mistakes of the previous version.



Sanidhya Kashyap (6):
  generic function between migration and bitmap dump
  BitmapLog: bitmap dump code
  BitmapLog: get the information about the parameters
  BitmapLog: cancel mechanism for an already running dump bitmap process
  BitmapLog: set the period of the dump bitmap process
  BitmapLog: python script for extracting bitmap from a binary file

 arch_init.c               |  19 ++-
 hmp-commands.hx           |  47 ++++++
 hmp.c                     |  56 ++++++
 hmp.h                     |   4 +
 include/exec/cpu-all.h    |   5 +-
 include/exec/ram_addr.h   |   4 +
 include/sysemu/sysemu.h   |   5 +
 migration.c               |  12 ++
 monitor.c                 |   7 +
 qapi-schema.json          |  86 ++++++++++
 qmp-commands.hx           | 101 +++++++++++
 savevm.c                  | 423 ++++++++++++++++++++++++++++++++++++++++++++++
 scripts/extract-bitmap.py | 213 +++++++++++++++++++++++
 vl.c                      |  23 +++
 14 files changed, 996 insertions(+), 9 deletions(-)
 create mode 100755 scripts/extract-bitmap.py

-- 
1.9.1