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[Qemu-devel] [PATCH 0/17 v2] Localhost migration with side channel for r
From: |
Lei Li |
Subject: |
[Qemu-devel] [PATCH 0/17 v2] Localhost migration with side channel for ram |
Date: |
Tue, 22 Oct 2013 11:25:24 +0800 |
This patch series tries to introduce a mechanism using side
channel pipe for RAM via SCM_RIGHTS with unix domain socket
protocol migration.
This side channel is used for the page flipping by vmsplice,
which is the internal mechanism for localhost migration that
we are trying to add to QEMU. The backgroud info and previous
patch series for reference,
Localhost migration
http://lists.nongnu.org/archive/html/qemu-devel/2013-08/msg02916.html
migration: Introduce side channel for RAM
http://lists.gnu.org/archive/html/qemu-devel/2013-09/msg04043.html
I have picked patches from the localhost migration series and rebased
it on the series of side channel, now it is a complete series that
passed the basic test.
Please let me know if there is anything needs to be fixed or improved.
Your suggestions and comments are very welcome, and thanks for Paolo
for his review and useful suggestions.
Changes since V1:
Address suggestions from Paolo Bonzini including:
- Use Unix socket QEMUFile as basis of code and adjust the way
of overriding RDMA hooks.
- Involve the vmsplice for page flipping.
- Add new RunState RUN_STATE_FLIPPING_MIGRATE and add it to
runstate_needs_reset() for the adjustment of the current
migration process with page flipping.
Lei Li (17):
rename is_active to is_block_active
QAPI: introduce magration capability unix_page_flipping
migration: add migrate_unix_page_flipping()
qmp-command.hx: add missing docs for migration capabilites
migration-local: add QEMUFileLocal with socket based QEMUFile
migration-local: introduce qemu_fopen_socket_local()
migration-local: add send_pipefd()
migration-local: add recv_pipefd()
migration-local: override before_ram_iterate to send pipefd
savevm: adjust ram_control_save_page with page flipping
migration-local: override save_page for page transmit
migration-local: override hook_ram_load
migration-unix: replace qemu_fopen_socket with qemu_fopen_socket_local
add new RanState RAN_STATE_FLIPPING_MIGRATE
migration-unix: page flipping support on unix outgoing
migration: adjust migration_thread() process for unix_page_flipping
hmp: better fomat for info migrate_capabilities
Makefile.target | 1 +
block-migration.c | 2 +-
migration-local.c | 512 ++++++++++++++++++++++++++++++++++++++++++
hmp.c | 5 +-
include/migration/migration.h | 3 +
include/migration/qemu-file.h | 2 +
include/migration/vmstate.h | 2 +-
migration-unix.c | 27 ++-
migration.c | 18 +-
qapi-schema.json | 18 +-
qmp-commands.hx | 8 +
savevm.c | 21 +-
vl.c | 12 +-
13 files changed, 624 insertions(+), 27 deletions(-)
create mode 100644 migration-local.c
- [Qemu-devel] [PATCH 0/17 v2] Localhost migration with side channel for ram,
Lei Li <=