Hi~ COLO Frame, block replication and COLO proxy(colo-compare,filter-mirror, filter-redirector,filter-rewriter) have been exist in qemu for long time, it's time to integrate these three parts to make COLO really works.
In this series, we have some optimizations for COLO frame, including separating the process of saving ram and device state, using an COLO_EXIT event to notify users that VM exits COLO, for these parts, most of them have been reviewed long time ago in old version, but since this series have just rebased on upstream which had merged a new series of migration, parts of pathes in this series deserve review again. We use notifier/callback method for COLO compare to notify COLO frame about net packets inconsistent event, and add a handle_event method for NetFilterClass to help COLO frame to notify filters and colo-compare about checkpoint/failover event, it is flexible. For the neweset version, please refer to: https://github.com/zhangckid/qemu/tree/qemu-colo-18mar10 Please review, thanks. V5: - Addressed Markus's comments add new command to query COLO status(patch 11/17). - Rebased on upstream codes. - Fixed qapi header problem in patch 10/17. - Fixed the conflict of "qemu_anon_ram_alloc()" in patch 07/17. V4: - Address Eric's comments in patch 10/16. - Rebase on upstream codes. - Fix mingw compile error in patch 02/16. - Fix some comments. - Fix conflect with the patch "migration: remove "enable_colo" var" in patch 06/16. V3: - Address community comments from V2. - Rebase on upstream codes. - Fix several bugs. - Splite shared disk part to indepentent patch set. - Optimize codes. Zhang Chen (10): filter-rewriter: fix memory leak for connection in connection_track_table colo-compare: implement the process of checkpoint colo-compare: use notifier to notify packets comparing result COLO: integrate colo compare with colo frame COLO: Add block replication into colo process COLO: Remove colo_state migration struct ram/COLO: Record the dirty pages that SVM received qapi: Add new command to query colo status filter: Add handle_event method for NetFilterClass filter-rewriter: handle checkpoint and failover event zhanghailiang (7): COLO: Load dirty pages into SVM's RAM cache firstly COLO: Flush memory data from ram cache qmp event: Add COLO_EXIT event to notify users while exited COLO savevm: split the process of different stages for loadvm/savevm COLO: flush host dirty ram from cache COLO: notify net filters about checkpoint/failover event COLO: quick failover process by kick COLO thread include/exec/ram_addr.h | 1 + include/migration/colo.h | 11 ++- include/net/filter.h | 5 ++ migration/Makefile.objs | 2 +- migration/colo-comm.c | 76 ---------------- migration/colo.c | 220 ++++++++++++++++++++++++++++++++++++++++++++--- migration/migration.c | 38 +++++++- migration/ram.c | 183 ++++++++++++++++++++++++++++++++++++++- migration/ram.h | 4 + migration/savevm.c | 54 ++++++++++-- migration/savevm.h | 5 ++ migration/trace-events | 3 + net/colo-compare.c | 108 +++++++++++++++++++++-- net/colo-compare.h | 24 ++++++ net/colo.h | 4 + net/filter-rewriter.c | 109 +++++++++++++++++++++-- net/filter.c | 17 ++++ net/net.c | 28 ++++++ qapi/migration.json | 70 +++++++++++++++ vl.c | 2 - 20 files changed, 846 insertions(+), 118 deletions(-) delete mode 100644 migration/colo-comm.c create mode 100644 net/colo-compare.h -- 2.7.4
