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[Qemu-devel] [RFC v2] Migration thread
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [RFC v2] Migration thread |
Date: |
Fri, 07 Sep 2012 18:23:36 +0200 |
Hi
here is v2 of the migration thread series. There is still some "issues"
with locking in the error paths (they are at 54 patches now).
Changes from v1:
- migration stats series are included
- migration bitmap sync trace-events to know how long it takes
- file->last_error use almost removed
reworked functions to return real error codes and work with that.
Some more work needed here.
- new savevm for live migration pending method. see last commit for
details.
Please test and comment.
Later, Juan.
The following changes since commit 6e4c0d1f03d6ab407509c32fab7cb4b8230f57ff:
hw/pl110: Fix spelling of 'palette' (2012-09-06 17:04:33 +0200)
are available in the git repository at:
http://repo.or.cz/r/qemu/quintela.git migration-thread-v2
for you to fetch changes up to 688feac0fbc287920dff537ed13fb8483c064f7f:
savem: Add calculating a new save_live migration method: pending (2012-09-07
14:00:35 +0200)
----------------------------------------------------------------
Juan Quintela (49):
buffered_file: g_realloc() can't fail
fix migration sync
migration: store end_time in a local variable
migration: print total downtime for final phase of migration
migration: rename expected_time to expected_downtime
migration: export migrate_get_current()
migration: print expected downtime in info migrate
savevm: Factorize ram globals reset in its own function
ram: introduce migration_bitmap_set_dirty()
ram: Introduce migration_bitmap_test_and_reset_dirty()
ram: Export last_ram_offset()
ram: introduce migration_bitmap_sync()
ram: create trace event for migration sync bitmap
Separate migration bitmap
migration: Add dirty_pages_rate to query migrate output
buffered_file: rename opaque to migration_state
buffered_file: opaque is MigrationState
buffered_file: unfold migrate_fd_put_buffer
buffered_file: unfold migrate_fd_put_ready
buffered_file: unfold migrate_fd_put_buffer
buffered_file: unfold migrate_fd_put_buffer
buffered_file: We can access directly to bandwidth_limit
buffered_file: callers of buffered_flush() already check for errors
buffered_file: make buffered_flush return the error code
migration: make migrate_fd_wait_for_unfreeze() return errors
savevm: unexport qemu_fflush
viritio-net: use qemu_get_buffer() in a temp buffer
savevm: Remove qemu_fseek()
savevm: make qemu_fflush() return an error code
savevm: unfold qemu_fclose_internal()
savevm: unexport qemu_ftell()
savevm: make qemu_fill_buffer() be consistent
savevm: Only qemu_fflush() can generate errors
buffered_file: buffered_put_buffer() don't need to set last_error
block-migration: make flush_blks() return errors
block-migration: Switch meaning of return value
block-migration: handle errors with the return codes correctly
savevm: un-export qemu_file_set_error()
savevm: make qemu_file_put_notify() return errors
buffered_file: Move from using a timer to use a thread
migration: make qemu_fopen_ops_buffered() return void
migration: stop all cpus correctly
migration: make writes blocking
migration: remove unfreeze logic
migration: take finer locking
buffered_file: Unfold the trick to restart generating migration data
buffered_file: don't flush on put buffer
buffered_file: unfold buffered_append in buffered_put_buffer
savem: Add calculating a new save_live migration method: pending
Paolo Bonzini (2):
split MRU ram list
BufferedFile: append, then flush
Umesh Deshpande (2):
add a version number to ram_list
protect the ramlist with a separate mutex
arch_init.c | 174 ++++++++++++++++++++++++++++++++------------
block-migration.c | 100 +++++++++----------------
buffered_file.c | 213 +++++++++++++++++++++---------------------------------
buffered_file.h | 12 +--
cpu-all.h | 17 ++++-
exec-obsolete.h | 10 ---
exec.c | 45 ++++++++++--
hmp.c | 12 +++
hw/virtio-net.c | 4 +-
migration-exec.c | 2 -
migration-fd.c | 6 --
migration-tcp.c | 2 +-
migration-unix.c | 2 -
migration.c | 151 +++++++++++++++++++-------------------
migration.h | 10 +++
qapi-schema.json | 18 ++++-
qemu-file.h | 11 ---
qmp-commands.hx | 9 +++
savevm.c | 144 ++++++++++++++++++------------------
sysemu.h | 1 +
trace-events | 4 +
vmstate.h | 1 +
22 files changed, 498 insertions(+), 450 deletions(-)
- [Qemu-devel] [RFC v2] Migration thread,
Juan Quintela <=